The BMW UUC Digest 
Volume 2 : Issue 494 : "text" Format

Messages in this Issue:
  New entertainment entity gets US F1 rights, CBS to show 4 races
  Re: E30 for SCCA Solo II
  Re: E30 for SCCA Solo II
  Re: E30 for SCCA Solo II
  Re: E46 Tires
  Re: E46 Tires
  Re: 325ix rumbles
  Re: E46 wheels & tires:
  Re: E46 wheels & tires:
  Re: E46 wheels & tires:
  Re: E46 wheels & tires:

----------------------------------------------------------------------

Date: Thu, 13 Jan 2005 16:49:11 -0500
From: "Dennis Liu" <[EMAIL PROTECTED]>
To: "'911/993/996'" <[EMAIL PROTECTED]>,
   "BMW List" <[email protected]>, <[EMAIL PROTECTED]>
Subject: New entertainment entity gets US F1 rights, CBS to show 4 races
Message-ID: <[EMAIL PROTECTED]>

Cool, I think.

A new entity has just gotten US broadcast F1 rights, and four races (San
Marino, Canada, the Nurburgring and Barcelona) will be broadcast on CBS.
Tape delay?  Live early on Sunday morning???  I suppose this will be like
ABC's coverage in the past.  Interesting, they don't list the USGP at Indy.
Surely that'd be the most interesting one for a US network to show.  

Curiously, DIC entertainment is a children's programming company.  Luckily,
it APPEARS that SPEED will continue to broadcast F1 races, including the
ones not on CBS.  See:
http://insider.speedtv.com/viewtopic.php?t=65491

Vty,

--Dennis


DIC Entertainment and Wasserman Media Group Team to Bring Formula 1(TM) to
U.S. Audiences Via Pact With CBS Thursday January 13, 11:39 am ET  
Group Purchases Exclusive Network Broadcast Rights for F1(TM) Championships
and Packages Integrated Sponsorship Programs 

LOS ANGELES, Jan. 13 /PRNewswire/ -- Building on the increasing worldwide
popularity of motorsports, Grand Prix Entertainment, an entity formed by DIC
Entertainment, and Wasserman Media Group, are partnering to support a full-
scale Formula 1(TM) brand launch in the United States. The announcement was
made today by Andy Heyward, Chairman & CEO, DIC Entertainment and Casey
Wasserman, CEO, WMG.  
 
Grand Prix Entertainment purchased the exclusive, domestic broadcast
television rights to Formula 1(TM), and subsequently entered into an
agreement with CBS Television to air a series of specials. Through the
partnership, WMG's sales force will develop programs offering marketers
access to and alignment with the world's most popular racing sport. Michael
Heyward has been named Managing Partner, Grand Prix Entertainment.

Bernie Ecclestone stated, "Andy and I have been talking for a while about
the possibility of working together, and I am delighted that we have
finalized the deal. This is an important step forward in our strategy to
promote Formula 1(TM) in the U.S. and to reach a wider audience over the
coming years." He added, "Formula 1(TM) is the pinnacle of world motor
sport, combining speed and cutting-edge technology with glamour and
excitement. I am confident that with the expertise and credibility of DIC
Entertainment and WMG combined with the wide audience reach on CBS, Formula
1(TM) will build its popularity and a tremendous fan base in the U.S."

"Formula 1(TM) is one of the most popular sports in the world. Bernie is a
global sports icon, and it is an honor for us to join forces in business
with him. Casey Wasserman and his gifted organization, run by Jeff Knapple,
represent the cutting-edge of sports marketing, media and business. We have
an all-star team assembled to bring F1(TM) to broadcast television and to
generate tremendous brand awareness in the U.S.," said Andy Heyward.

CBS has committed to broadcast four F1(TM) races during prime weekend sports
programming time-slots, scheduled to commence April 24, 2005 with coverage
of the race in San Marino Grand Prix, Italy. Additional races to air include
the Spanish Grand Prix in Barcelona, Canadian Grand Prix in Montreal and the
Grand Prix of Europe staged at the famous Nurburgring in Germany. In
addition CBS will air two hour-long specials based on lifestyle elements of
Formula 1(TM). These specials will be produced by Grand Prix Entertainment
in association with WMG.

"CBS is pleased to present Formula One(TM), the most popular racing series
in the world, to the U.S. television audience," said Rob Correa, Senior Vice
President, Communications, CBS Sports. "We look forward to introducing
F1(TM) racing to a new and broader audience."

"Formula 1(TM) represents the ultimate lifestyle sports experience, and we
are thrilled to support this major promotional effort," said Wasserman.
"Given Andy's expertise in launching some of the world's most recognized
television franchises, we are proud to partner with his team to leverage our
sales capabilities and build on F1(TM)'s valuable, global appeal," said
Wasserman.

WMG's involvement with this project further signals a major utilization of
its seasoned sales division. The WMG team will handle all broadcast sales
responsibilities and is developing marketing partnerships targeted to the
upscale F1(TM) audience. Recently WMG represented the largest sponsorship in
Europe when they closed the $180 million naming rights deal between Arsenal
and Emirates Airlines. WMG was also recently selected to handle the high
profile naming rights and shirt sponsorship sales for Italy's prominent
Juventus football team.

Concurrently, Grand Prix Entertainment will develop strategies to expand the
F1(TM) television audience beyond its current domestic fan base specifically
to engage a younger, more progressive audience. The program will be
supported by PR initiatives, on-air promos, print, outdoor and broadcast
advertising, as well as a major viral marketing campaign with Seth Berman
serving as GPE's Director of Marketing.

The global popularity of the Formula One World Championship is unsurpassed
by any other annual sports property and each Grand Prix race attracts 100s
of millions of television viewers in over 150 countries. A typical event
attracts more than 120,000 spectators to the grandstands. F1 generates
annual revenues of up to $2 billion in TV rights and advertising time.
Formula 1 racing team budgets can reach over $300 million per season and
their drivers are an elite and exceptional group of athletes who are among
the most highly paid sports stars in the world.

About Grand Prix Entertainment

Grand Prix Entertainment is an affiliate of DIC Entertainment. DIC, a
leading children's entertainment company, is a full-service studio dedicated
to creating, developing, producing, distributing, marketing and
merchandising family-based intellectual properties. DIC has distinguished
itself by building one of the largest libraries of U.S. animation with more
than 3,000 half-hours of award winning programming, including Inspector
Gadget(TM), Strawberry Shortcake(TM), Sabrina(TM), Madeline(TM), Liberty's
Kids(TM), Where On Earth Is Carmen Sandiego?(TM), Sonic The Hedgehog(TM),
Super Mario Bros(TM) and Care Bears(TM). In September 2003, DIC launched the
DIC Kid's Network, a unique syndicated programming block designed to meet
core FCC requirements and the only network for kids that reaches effectively
100% of U.S. households on over 400 stations, airing in every Designated
Market Area across the country. As a pre-eminent supplier of kid's
programming worldwide, DIC has developed strategic partnerships with key
domestic and international broadcast partners throughout the U.S., Europe,
Asia, Latin America, Africa and Australia. DIC is headquartered in Burbank,
California with international offices in New York, Paris, London and
Cologne.

About Wasserman Media Group

Wasserman Media Group, LLC is a leading sports and entertainment management,
marketing and content company. WMG's complementary divisions collectively
represent some of the industries' most recognized athletes, musicians and
brands. The management business handles top talent, from action sports
superstar Travis Pastrana to the world renowned band Coldplay. WMG Marketing
secures naming rights for popular sports and entertainment destinations, and
develops marketing programs for some of the most recognized consumer and
corporate brands. WMG recently launched a content business with Studio411, a
full-scale production studio with comprehensive retail distribution and
marketing capabilities. Wasserman Media Group is also the holding company
for the Los Angeles Avengers of the Arena Football League. 





------------------------------

Date: Thu, 13 Jan 2005 17:14:47 -0500
From: "Robinson, Lee" <[EMAIL PROTECTED]>
To: [email protected]
Subject: Re: E30 for SCCA Solo II
Message-ID: <[EMAIL PROTECTED]>

 Question:

Before you do all of this work & dump some coin, why don't you just source a
325is?  It has a more powerful powerplant & the limited slip you requested.

Barring that, go for the gold.  You can install the front crash mounts,
which will give you about.5 deg extra negative camber.  Replace any/all
suspension bushings, as it is reasonable to assume they are shot--this will
make a night/day difference in the car's performance & shouldn't set you
back too much.  Replace the rear shock mounts.  Total cost for parts so far
should be not much.  If the rules allow it, add the E30M3 castor-correcting
control-arm bushings.  They are solid (less flex) & take the car's caster
from about 3deg to about 9 deg, which makes the car's steering excellent.
Stock rules will likely allow you to use single-adjustable Konis, which is
probably the best you can get.  FWIW, my M3 has the Bilstein sports.

Best bang for the buck is track tires.  Period.  However, you will be able
to put much more work into these if your suspension is up to new-car
standards.  Neil D. said it best when he said that there's no point in
driving a BMW if the suspension isn't up to par.

You can use more aggressive pads too.

FWIW, my 88 M3 has an almost stock suspension in it.  The only real upgrades
from you are:  1st, it's an M3, & mainly turner's fixed camber plates
(-2.5deg camber) & some flabby, but better than stock eibach springs.  This
car will usually finish in the top 15 or so FTD in the ATL region
autocrosses out of 200+ cars & runs like a scalded dog at the track, so you
can see the potential locked in your car.

Good Luck!
Lee

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On Behalf Of Jim Farris
> Sent: Thursday, January 13, 2005 11:28
> To: [email protected]
> Subject: [UUC] E30 for SCCA Solo II
> 
> Greetings Listers,
> 
> I'm ready to do some SCCA Solo II after many years of absence.
> Unfortunately, I'll just have to use the appropriate car that 
> I have available right now - a 1987 325e, bone stock.  I'll 
> compete in G Stock.  I drive the car daily and don't mind 
> putting a few dollars and some time into it.  I'm thinking 
> new shocks, either Bilstein heavy duty or touring and looking 
> for a 3.73 ratio limited slip from a 325i or is.
> 
> Can someone help me with which differentials (year & model) 
> will bolt in?
> How do you tell if it is a LS?  Finally, does the speedometer 
> drive work off the ring gear, so that it doesn't care what 
> the ratio is?
> 
> Any other suggestions that will allow the car to stay in the 
> stock class, but give bang for the buck?
> 
> Thanks in advance,
> Jim Farris
> Montgomery AL
> 
> Search the 
> ARCHIVES:http://www.mail-archive.com/[email protected]
> 
> 
> ______________________________________________________________
> ____________
> In memory of Michel Potheau - friend, enthusiast, founder of 
> the BMW CCA.
> 
> UUC Motorwerks - BMW Performance Fine-tuning and home of the 
> Ultimate Short Shifter - accept no substitutes!
> 908-874-9092 . http://www.uucmotorwerks.com
> 

------------------------------

Date: Thu, 13 Jan 2005 08:51:28 -0800 (PST)
From: Kevin Henry <[EMAIL PROTECTED]>
To: [email protected]
Subject: Re: E30 for SCCA Solo II
Message-ID: <[EMAIL PROTECTED]>

Jim,

Welcome to autocrossing an E30.  New shocks are allowed, but you might want to 
look at Koni Single Adjustables for about the same money as bilsteins, and 
they're legal for stock.  Then you can firm them up for the event, and soften 
them for daily driving.  

You can install a new front sway bar in stock, but not a rear one.  Ireland 
Engineering has a 25mm hollow adjustable front bar that works great.

You should definitely look into R-compound tires.  That alone will make the 
biggest difference, and are stock legal.  You will have to stay with the stock 
14x6 rims for stock, so you'll probably be stuck with a 205/55/14, but that 
will give you a slightly better gear ratio since the tire is a little shorter.

Unfortunately, to compete in Stock, you MUST leave the diff alone.  You can 
only put on a limited slip if it was available on your car from the factory, in 
the exact ratio that was available (Either 2.79 or 2.93 for an e, depending on 
year...I don't remember when the changeover was, but the key is that you have 
to keep the same ratio to stay in stock.)  To Id limited slip, look at the tag 
hanging off the cover--if it's got a 'S' stamped on it, it's limited slip.  
Also, try turning one wheel, and if both turn in the same direction, it's 
limited slip.

If you decide to go to Street Prepared (DSP, unfortunately for you), then you 
can do the diff from any E30 325 (3.73, 3.91, 4.10, 2.79, 2.93)  The cases that 
fit are available on E30 325, M3, and E28s (although you have to change the 
rear cover to your E30 one to use the E28 donor, and I'm not sure they've got 
the right ratios.)  

Kevin
'90 325i DSP  way too much autox stuff on it


--- "Jim Farris" <[EMAIL PROTECTED]> wrote:

Greetings Listers,

I'm ready to do some SCCA Solo II after many years of absence.
Unfortunately, I'll just have to use the appropriate car that I have
available right now - a 1987 325e, bone stock.  I'll compete in G Stock.  I
drive the car daily and don't mind putting a few dollars and some time into
it.  I'm thinking new shocks, either Bilstein heavy duty or touring and
looking for a 3.73 ratio limited slip from a 325i or is.

Can someone help me with which differentials (year & model) will bolt in?
How do you tell if it is a LS?  Finally, does the speedometer drive work off
the ring gear, so that it doesn't care what the ratio is?

Any other suggestions that will allow the car to stay in the stock class,
but give bang for the buck?


_____________________________________________________________
Highspeed Internet and Email by: Metronets www.metronets.net

------------------------------

Date: Fri, 14 Jan 2005 10:35:06 -0500 (EST)
From: Mark Andy <[EMAIL PROTECTED]>
To: [email protected]
Subject: Re: E30 for SCCA Solo II
Message-ID: <[EMAIL PROTECTED]>

Howdy,

On Thu, 13 Jan 2005, Kevin Henry wrote:
> Welcome to autocrossing an E30.  New shocks are allowed, but you might
> want to look at Koni Single Adjustables for about the same money as
> bilsteins, and they're legal for stock.  Then you can firm them up for
> the event, and soften them for daily driving.

Yep, agreed.

> You can install a new front sway bar in stock, but not a rear one.  
> Ireland Engineering has a 25mm hollow adjustable front bar that works
> great.

Minor note... Similar to below, you can use a rear sway bar if one was 
optional for your particular model car.

> You should definitely look into R-compound tires.  That alone will make
> the biggest difference, and are stock legal.  You will have to stay with
> the stock 14x6 rims for stock, so you'll probably be stuck with a
> 205/55/14, but that will give you a slightly better gear ratio since the
> tire is a little shorter.

Assuming you have the wheel well room, I'd go with a 225/50-14.  The 6" 
rim certainly isn't optimal, but the tire will also mount up fine.  
Similar situations exist with miatas, neons, etc.  In all cases, the extra 
width, even on a non-optimal rim, seems to be better.

> Unfortunately, to compete in Stock, you MUST leave the diff alone.  You
> can only put on a limited slip if it was available on your car from the
> factory, in the exact ratio that was available (Either 2.79 or 2.93 for
> an e, depending on year...I don't remember when the changeover was, but
> the key is that you have to keep the same ratio to stay in stock.)  To
> Id limited slip, look at the tag hanging off the cover--if it's got a
> 'S' stamped on it, it's limited slip.  Also, try turning one wheel, and
> if both turn in the same direction, it's limited slip.

Right, 100%.

To generalize a bit (I'm quite familier with SCCA autox rules, not so much 
with e30 bmws...), you can only use components that were stock on your 
particular model of car in the year it was built and they must be the oem 
components.  Aftermarket equivilents are not legal in Stock.  That means 
that if you want to use the rear sway bar or limited slip from a 325is, 
they needed to be available (from BMW directly) on your 325e.  Your other 
option, the feasiblity of which I don't know enough about, is to turn your 
car into an is.  This is called an 'option package conversion' and is 
frequently done in stock classes with older cars.  To make this work, 
you'd need to bring over all the IS parts, not just the ones you want (or 
even the ones that matter...), except for things the stock rules allow you 
to change anyway (which, at a high level, are shocks/struts, front bar, 
and wheels.  Not springs, not the rear bar, not diffs/rear gears, 
not seats, etc.).  In essence, you'd need to make your e into an is that 
bmw would have sold you back in the day.

> If you decide to go to Street Prepared (DSP, unfortunately for you),
> then you can do the diff from any E30 325 (3.73, 3.91, 4.10, 2.79, 2.93)  
> The cases that fit are available on E30 325, M3, and E28s (although you
> have to change the rear cover to your E30 one to use the E28 donor, and
> I'm not sure they've got the right ratios.)

Yep.  Another option would be STS or STX, which don't allow 
update/backdate like SP does, but which do allow more modifications than 
Stock...  In STX you could run any limited slip you wanted (but the gears 
must stay stock for your model) and in both springs/bars are free.

Feel free to email me with questions regarding SCCA autox rules.  If I 
don't know the answer, I can point you to someone who does.

Mark


------------------------------

Date: Thu, 13 Jan 2005 14:26:30 -0800
From: [EMAIL PROTECTED]
To: [email protected]
Subject: Re: E46 Tires
Message-ID: <[EMAIL PROTECTED]>

This thread rekindles an observation I made when recently getting new shoes
for the baby.

In the "tar" store I looked closely at the S03 treads and noticed that the
larger blocks toward the edge of the tire where undercut. Wouldn't this
lead to block squirm and flex which is not what you want? Must be a trade
off to some other factor? Gary?


-Kevin


------------------------------

Date: Thu, 13 Jan 2005 17:39:59 -0500
From: "Gary Derian" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>, <[email protected]>
Subject: Re: E46 Tires
Message-ID: <[EMAIL PROTECTED]>

The groove gets wider as the tire wears to compensate for the shallower 
depth.  This maintains hydroplaning resistance as the tire wears.  The S-03 
is a wet tire, not an ultimate dry tire.

Gary Derian

----- Original Message ----- 
From: <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, January 13, 2005 5:26 PM
Subject: Re: [UUC] E46 Tires


> This thread rekindles an observation I made when recently getting new 
> shoes
> for the baby.
>
> In the "tar" store I looked closely at the S03 treads and noticed that the
> larger blocks toward the edge of the tire where undercut. Wouldn't this
> lead to block squirm and flex which is not what you want? Must be a trade
> off to some other factor? Gary?
>
>
> -Kevin
>
> Search the ARCHIVES:http://www.mail-archive.com/[email protected]
>
>
> __________________________________________________________________________
> In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA.
>
> UUC Motorwerks - BMW Performance Fine-tuning and home of the Ultimate
> Short Shifter - accept no substitutes!
> 908-874-9092 . http://www.uucmotorwerks.com 


------------------------------

Date: Thu, 13 Jan 2005 18:29:27 -0600
From: "tom dotzler" <[EMAIL PROTECTED]>
To: <[email protected]>
Subject: Re: 325ix rumbles
Message-ID: <[EMAIL PROTECTED]>

I had an iX once. Sometimes they get rumble from the transfer case.
It's a chain drive unit and the chains get worn and loose. Not sure
that's your problem but You might want to check it out. You would not
want to have a torn up transfer unit. $$$$
Tom Dotzler


------------------------------

Date: Thu, 13 Jan 2005 21:44:12 -0800
From: "Polands" <[EMAIL PROTECTED]>
To: "Gary Derian" <[EMAIL PROTECTED]>
Cc: "bmwuucdigest" <[email protected]>
Subject: Re: E46 wheels & tires:
Message-ID: <[EMAIL PROTECTED]>

Gary,

Actually I've never had a Coker built tire, this is comparing Michelin to 
Michelin.
Out of curiosity I just went out to the garage and measured a 200/60 and a 
220/55:
200/60:  3-5/8" sidewall height, 77-3/8" circumferance.
220/55:  4-1/4" sidewall height, 79" circumferance.

I'm certain that my measurements have a poor degree of acuracy, but that's a 
pretty significant difference, and I still think that the larger tire, on 
the same width wheel, is going to have a lot less turn-in stability. 
Definitely feel it.

Steve Poland

----- Original Message ----- 
From: "Gary Derian" <[EMAIL PROTECTED]>
To: "Polands" <[EMAIL PROTECTED]>; <[email protected]>
Sent: Thursday, January 13, 2005 1:15 PM
Subject: Re: [UUC] E46 wheels & tires:


>
> The 220/55 is about the same height as a 200/60.  Your big change was 
> going from a Michelin built tire to a Coker built tire.  There is a lot of 
> engineering that is inside a tire and can't be seen.
> Gary Derian
>
>
>> Tom,
>>
>> I've got a certified used 2001 330ci sport package.  The original tires 
>> had been replaced with Dayton Daytona ZR (225/45-17front, 245/40-17rear). 
>> I've never heard of these tires before, but the width and low profile 
>> provide, to me, unbelievable cornering.  I'm sure most other similar size 
>> tires would be stickier, but compared to my E28 535is, with the frickin 
>> TRX wheels, they are amazing.  I think the sidewall height / sidewall 
>> stiffness may mean more in cornering than many other factors.  I suspect 
>> the Daytonas would be cheap, and they are only noisy on new pavement.
>>
>> For the 535, when Michelin sold off the TRX 200/60-390 molds to Coker, 
>> who then didn't go into production with them, I had to switch to the 
>> remaining TRX 220/55-390 size.  The amount of lean induced by the taller, 
>> bulgy-er sidewall prior to "set" was very noticeable.
>>
>> (go ahead and talk trash about my not pitching out the 390mm wheels, I 
>> just don't like the kid-racer look of almost all the aftermarket wheels. 
>> I'd switch to E39- 528sport or 540sport wheels in a flash, but can't 
>> justify the $2,000 to $2,400 that people want for them.)
>>
>> Steve Poland
>> Portland, OR
>> Search the 
>> ARCHIVES:http://www.mail-archive.com/[email protected]
>>
>>
>> __________________________________________________________________________
>> In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA.
>>
>> UUC Motorwerks - BMW Performance Fine-tuning and home of the Ultimate
>> Short Shifter - accept no substitutes!
>> 908-874-9092 . http://www.uucmotorwerks.com
> 


------------------------------

Date: Fri, 14 Jan 2005 01:05:38 -0500
From: "Gary Derian" <[EMAIL PROTECTED]>
To: "bmwuucdigest" <[email protected]>
Subject: Re: E46 wheels & tires:
Message-ID: <[EMAIL PROTECTED]>

The wider tire on the same rim will have an effect.  The sidewalls will be 
pinched in a bit reducing lateral stability.  I've felt this myself going 
from a 235 to a 245 on an 8 inch rim.  Those two sizes are supposed to be 
nearly identical in diameter but tires built for car manufacturers are 
sometimes adjusted.
Gary Derian



> Gary,
>
> Actually I've never had a Coker built tire, this is comparing Michelin to 
> Michelin.
> Out of curiosity I just went out to the garage and measured a 200/60 and a 
> 220/55:
> 200/60:  3-5/8" sidewall height, 77-3/8" circumferance.
> 220/55:  4-1/4" sidewall height, 79" circumferance.
>
> I'm certain that my measurements have a poor degree of acuracy, but that's 
> a pretty significant difference, and I still think that the larger tire, 
> on the same width wheel, is going to have a lot less turn-in stability. 
> Definitely feel it.
>
> Steve Poland



------------------------------

Date: Fri, 14 Jan 2005 07:43:30 -0800
From: Tom Kosmalski <[EMAIL PROTECTED]>
To: "bmwuucdigest" <[email protected]>
Subject: Re: E46 wheels & tires:
Message-ID: <[EMAIL PROTECTED]>


> The wider tire on the same rim will have an effect.  The sidewalls 
> will be pinched in a bit reducing lateral stability.  I've felt this 
> myself going from a 235 to a 245 on an 8 inch rim.  Those two sizes 
> are supposed to be nearly identical in diameter but tires built for 
> car manufacturers are sometimes adjusted.
> Gary Derian

So does this mean that going from my stock 205/55/16s to the 225/50/16s 
you recommended in a higher performance tire might not be such a good 
idea after all, due to the width increase on the stock wheels?  Or is 
such a minor width increase OK?

I have really appreciated the group's response to my tire and wheel 
query.  Based on all the responses, and a little research on the web, I 
think I will go with the Bridgestone RE950 tires, and stick with the 
stock 16-inch wheels (leaves a little $$$ to put towards the highly 
desirable UUC/Corsa exhaust).  At least that's the decision for this 
week.  Who knows what next week might bring!

Tom K.
Hood River, OR
E46 325iT


------------------------------

Date: Fri, 14 Jan 2005 07:58:53 -0800 (PST)
From: Richard Dorffer <[EMAIL PROTECTED]>
To: Tom Kosmalski <[EMAIL PROTECTED]>,
   bmwuucdigest <[email protected]>
Subject: Re: E46 wheels & tires:
Message-ID: <[EMAIL PROTECTED]>

--- Tom Kosmalski <[EMAIL PROTECTED]> wrote:

> 
> > The wider tire on the same rim will have an effect.  The sidewalls 
> > will be pinched in a bit reducing lateral stability.  I've felt this 
> > myself going from a 235 to a 245 on an 8 inch rim.  Those two sizes 
> > are supposed to be nearly identical in diameter but tires built for 
> > car manufacturers are sometimes adjusted.
> > Gary Derian
> 
> So does this mean that going from my stock 205/55/16s to the 225/50/16s 
> you recommended in a higher performance tire might not be such a good 
> idea after all, due to the width increase on the stock wheels?  Or is 
> such a minor width increase OK?

Depends on the width of the rim.  A 235 is quite wide for a 7.5" wheel (like 
BMW put on E36 M3s)
and I don't believe a single tire manufacturer recommends anything less than 8" 
for a 235 width
tire.  A 245 is also a tighter squeeze on an 8" wheel like Gary noted above.

I don't know the width of your wheels.  If they are 7.5", a 225 would be pretty 
nice but near the
limit.  Every tire manufacturer has published data for recommended wheel widths 
for the respective
tire sizes.  Tire Rack is a also a good source for this information.

Regards,

Rich

------------------------------

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