The BMW UUC Digest Volume 2 : Issue 65 : "text" Format Messages in this Issue: Re: New Michelin Pilot Sport PS2 tire Re: New Michelin Pilot Sport PS2 tire Re: New Michelin Pilot Sport PS2 tire Re: New Michelin Pilot Sport PS2 tire Re: New Michelin Pilot Sport PS2 tire Re: New Michelin Pilot Sport PS2 tire Re: New Michelin Pilot Sport PS2 tire Apline component speakers for sale Forever black or Black again? Re: Dyno Speeds Re: E36 325ic Spring Replacement Questions Re: E36 325ic Spring Replacement Questions Re: E36 325ic Spring Replacement Questions <E38> Trans Fluid Change Question Re: E34 540i issues
---------------------------------------------------------------------- Date: Thu, 4 Mar 2004 15:32:10 -0500 From: "Dorffer, Rich" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: Re: New Michelin Pilot Sport PS2 tire Message-ID: <[EMAIL PROTECTED]> > Having designed both asymmetric and directional tires, > I've found that directional tread patterns offer very > little hydroplaning resistance compared to standard > tires. What? This goes completely against all of the marketing. Are you telling me that the marketing and conventional wisdom is inaccurate? ;-) > Asymmetric tread and even belt designs put the > strength where it is needed, on the outer shoulder to > resist the compression and buckling loads from hard > cornering. That is good to know. Regards, Rich - always been a fan of the MXX3 (now I better know why that is). ------------------------------ Date: Thu, 4 Mar 2004 16:55:39 -0800 From: "Marco Romani" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: Re: New Michelin Pilot Sport PS2 tire Message-ID: <[EMAIL PROTECTED]> The wife doesn't like the wet handling of her brand new S-02s on the 540 compared to the 40K mile OEM Dunlops. So maybe Gary is right. The S02s were highly rated. Marco -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Dorffer, Rich Sent: Thursday, March 04, 2004 12:32 PM To: [EMAIL PROTECTED] Subject: Re: [UUC] New Michelin Pilot Sport PS2 tire Search the ARCHIVES:http://www.mail-archive.com/[EMAIL PROTECTED] > Having designed both asymmetric and directional tires, > I've found that directional tread patterns offer very > little hydroplaning resistance compared to standard > tires. What? This goes completely against all of the marketing. Are you telling me that the marketing and conventional wisdom is inaccurate? ;-) > Asymmetric tread and even belt designs put the > strength where it is needed, on the outer shoulder to > resist the compression and buckling loads from hard > cornering. That is good to know. Regards, Rich - always been a fan of the MXX3 (now I better know why that is). __________________________________________________________________________ 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, 04 Mar 2004 21:57:14 -0600 From: Dennis Wynne <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: New Michelin Pilot Sport PS2 tire Message-ID: <[EMAIL PROTECTED]> The S-02 is known to be be good dry tire, but the S-02 was not such a good wet weather tire - I didn't think. It lacks a center groove (or void as Gary says). The TireRack user review shows 7.8 for wet traction and 7.6 for hydro resistance. Surely there would be better choices for the wife's car for wet performance? Dennis 01 M5 silver/black At 04:55 PM 3/4/04 -0800, Marco Romani wrote: >The wife doesn't like the wet handling of her brand new S-02s on the 540 >compared to the 40K mile OEM Dunlops. > >So maybe Gary is right. The S02s were highly rated. > >Marco > >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] Behalf Of Dorffer, Rich >Sent: Thursday, March 04, 2004 12:32 PM >To: [EMAIL PROTECTED] >Subject: Re: [UUC] New Michelin Pilot Sport PS2 tire > > >Search the ARCHIVES:http://www.mail-archive.com/[EMAIL PROTECTED] > > > > Having designed both asymmetric and directional tires, > > I've found that directional tread patterns offer very > > little hydroplaning resistance compared to standard > > tires. > >What? This goes completely against all of the marketing. Are you telling me >that the marketing and conventional wisdom is inaccurate? > >;-) > > > Asymmetric tread and even belt designs put the > > strength where it is needed, on the outer shoulder to > > resist the compression and buckling loads from hard > > cornering. > >That is good to know. > >Regards, > >Rich - always been a fan of the MXX3 (now I better know why that is). > >__________________________________________________________________________ >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 > >__________________________________________________________________________ >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, 4 Mar 2004 14:01:53 -0800 From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: New Michelin Pilot Sport PS2 tire Message-ID: <[EMAIL PROTECTED]> Gary, Also outside void ratio's and block sizes can be optimized for grip correct? -Kevin ------------------------------ Date: Thu, 04 Mar 2004 15:34:14 -0600 From: "Scott Staewen" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: New Michelin Pilot Sport PS2 tire Message-ID: <[EMAIL PROTECTED]> Gary, Should your comment read: "very little *additional* hydroplaning resistance compared to standard tires"? I thought the main (theoretical, at least) advantage of directional treads was better water evacuation. Is your point that directional designs aren't enough better in the wet to trade off the relatively greater advantages assymetic tires have in the dry? Scott Staewen >Having designed both asymetric and directional tires, >I've found that directional tread patterns offer very >little hydroplaning resistance compared to standard >tires. Asymmetric tread and even belt designs put the >strength where it is needed, on the outer shoulder to >resist the compression and buckling loads from hard >cornering. > >Gary Derian > > > > > On Wed, 3 Mar 2004, Gary Derian wrote: > > > I prefer asymmetric tires to directional tires for > > > handling and dry traction. > > > > Gary, > > > > Why is this? > > > > --Andre > > _________________________________________________________________ Find things fast with the new MSN Toolbar � includes FREE pop-up blocking! http://clk.atdmt.com/AVE/go/onm00200414ave/direct/01/ ------------------------------ Date: Thu, 4 Mar 2004 14:42:08 -0800 (PST) From: Gary Derian <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: New Michelin Pilot Sport PS2 tire Message-ID: <[EMAIL PROTECTED]> It depends on what you want. For my wife, directional tires are good because she has no need for additional shoulder stability. For me, I want it, and I can slow down a bit in the rain when the water is very deep (meaning you can't see the road texture through the standing water). A wet tire and a dry tire would be designed differently (duh). The directional aspect of some tires is for show. Giving them the benefit of the doubt, there may be some small advantage. If you want to drive very fast in heavy rain, you need a tire with hydroplaning resistance. In a wide tire, the bulk of the water must pass straight through the footprint. Putting lots of void in the center does that. Asymmetric tires can have good hydroplaning resistance, but when cornering hard, may not grip so well because there is less void in the shoulders. On the other hand, there is higher pressure on the shoulder which counteracts the reduced void. Gary Derian --- Scott Staewen <[EMAIL PROTECTED]> wrote: > Search the > ARCHIVES:http://www.mail-archive.com/[EMAIL PROTECTED] > > > > Gary, > Should your comment read: "very little *additional* > hydroplaning resistance > compared to standard tires"? I thought the main > (theoretical, at least) > advantage of directional treads was better water > evacuation. Is your point > that directional designs aren't enough better in the > wet to trade off the > relatively greater advantages assymetic tires have > in the dry? > > Scott Staewen ------------------------------ Date: Thu, 4 Mar 2004 14:43:04 -0800 (PST) From: Gary Derian <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: New Michelin Pilot Sport PS2 tire Message-ID: <[EMAIL PROTECTED]> Block profile and void distibution are two variables. Gary Derian --- [EMAIL PROTECTED] wrote: > Search the > ARCHIVES:http://www.mail-archive.com/[EMAIL PROTECTED] > > > Gary, > > Also outside void ratio's and block sizes can be > optimized for grip > correct? > > -Kevin > > __________________________________________________________________________ > 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, 4 Mar 2004 13:06:28 -0800 (PST) From: Vince Leo <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Apline component speakers for sale Message-ID: <[EMAIL PROTECTED]> I would like to sell the after-market Alpine SPR-135A component speakers I recently removed from our J Stock e30 M3. These are the ones with the separate tweeters. I am not a audio nut so here is what they say on the back... > Alpine > SPR-135A > 160W peak > 40W RMS > Imp 4 ohms Note: these were not stock, they are after-market. I don't have the grills as they were mounted in the foot wells (e30 stock location) and the tweeters were mounted in the mirror access panel (e30 stock location). I'd like to get $110 including shipping. Vince __________________________________ Do you Yahoo!? Yahoo! Search - Find what you�re looking for faster http://search.yahoo.com ------------------------------ Date: Thu, 4 Mar 2004 13:39:17 -0800 (PST) From: Mr <[EMAIL PROTECTED]> To: [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: Forever black or Black again? Message-ID: <[EMAIL PROTECTED]> Which has better and longer lasting results, Forever black or Black again? Where can I purchase the better of the two? Thanks group!! Manuel Paredes 95 325i L.A. BMWCCA __________________________________ Do you Yahoo!? Yahoo! Search - Find what you�re looking for faster http://search.yahoo.com ------------------------------ Date: Thu, 04 Mar 2004 16:41:43 -0500 From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: Dyno Speeds Message-ID: <[EMAIL PROTECTED]> I've also read that article, but -- as mentioned by Ben -- it doesn't address the issue raised by Brett. And doing dyno in gear closest to 1:1 wouldn't eliminnate problems since most BMWs would be achieving speeds well in excess of 120mph at redline. Neil In a message dated 3/4/2004 2:45:51 PM Eastern Standard Time, [EMAIL PROTECTED] writes: > Date: Thu, 04 Mar 2004 09:17:15 -0500 > From: ben keyes <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] > Subject: Re: Dyno Speeds > Message-ID: <[EMAIL PROTECTED]> > > > interesting article. odd that the specifics of the issue > that > Brett mentioned are not included in the article, but since > they take it as a given that a car will be tested in a 1:1 > gear that could eliminate the problem I guess. ------------------------------ Date: Thu, 4 Mar 2004 13:59:35 -0800 (PST) From: Gary Derian <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: E36 325ic Spring Replacement Questions Message-ID: <[EMAIL PROTECTED]> Convertibles are pretty floppy so I would stick with stock springs. Gary Derian > If there's a question I should have asked but > haven't, feel free to offer any other advice you may > have. > > Thanks, > Brian > '94 325ic ------------------------------ Date: Thu, 4 Mar 2004 15:09:55 -0800 (PST) From: Brian Daley <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: E36 325ic Spring Replacement Questions Message-ID: <[EMAIL PROTECTED]> Good point. That's really my inclination. What I need to find out is which stock E36 springs I can reasonably substitute. I'd hate to have to buy new from the dealer when there have to be tons of stock take-offs out there in people's garages and basements. Probably not so many from convertibles though - there were only 2 years of E36 325ics. Thanks, Brian -----Original Message----- From: Gary Derian <[EMAIL PROTECTED]> Sent: Mar 4, 2004 1:59 PM To: [EMAIL PROTECTED] Subject: Re: [UUC] E36 325ic Spring Replacement Questions Search the ARCHIVES:http://www.mail-archive.com/[EMAIL PROTECTED] Convertibles are pretty floppy so I would stick with stock springs. Gary Derian > If there's a question I should have asked but > haven't, feel free to offer any other advice you may > have. > > Thanks, > Brian > '94 325ic __________________________________________________________________________ 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, 4 Mar 2004 18:14:23 -0500 From: "Marc Plante" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: Re: E36 325ic Spring Replacement Questions Message-ID: <[EMAIL PROTECTED]> H&R OE Sports will lower the car maybe 1/2" and bump up the spring rates to 200 lbs/inch in the front. Nice firm ride without being too jolting. Can get annoying over a lot of expansion joints. Marc Plante E36 325i, 220k Vienna, VA ------------------------------ Date: Thu, 04 Mar 2004 18:59:51 -0500 From: "Richard Vaughn" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: <E38> Trans Fluid Change Question Message-ID: <[EMAIL PROTECTED]> Heres a good site for the fluid change. http://www.e38.org/zf-5hp30-service.html Good luck Richard Vaughn BMW CCA #132931 Tarheel Chapter '95 740i w/new engine hers '92 535i 5 speed mine '91 325ia daughters '90 325i 5 speed sons '96 Z71 mine too _________________________________________________________________ Frustrated with dial-up? Lightning-fast Internet access for as low as $29.95/month. http://click.atdmt.com/AVE/go/onm00200360ave/direct/01/ ------------------------------ Date: Thu, 4 Mar 2004 23:16:02 -0500 From: "Doug Foster" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: Re: E34 540i issues Message-ID: <[EMAIL PROTECTED]> >> Gary said: <snip> My understanding is non LL cars use ATF >> for the power steering. I could be wrong. I have a 94 540iA (so no sport suspension) and no load leveling suspension (I've changed rear shocks so I am sure of that), and my power steering uses CHF-11S. Says so on the cap, and my parts guy says that was right but that it changed mid production. Trust what the cap says to put in. >> Marty asked: >>1) The ride: It's hard to explain but it feels kind of like any little >> bump is transmitted to the body (my seat, steering wheel) from 20 mph, >> or less, on up. It seems to smooth out a bit at 65 or so and doesn't >> get worse with speed. So it doesn't seem to be a rotating mass but more >> like metal-metal where a bushing should be. Oddly though, it's hard to >> correlate the 'bumpiness' with a particular road - i.e. it might do it >> on what appears to be a smooth road. I'm thinking it's probably thrust >> arm bushings and/or some sort of frame bushings. I have Bav Auto springs, Bilstein sports, and can say I have a similar feeling. The car feels great at speed, but low speed bumps make me feel like the shocks bottom out. I run 17s in the summer and 15s for snows, and can say that the 15s do make an improvement in ride quality, but the bottoming out feeling is still there. I changed to 17s before doing the springs/shocks, and I didn't have this problem, so I think it is a lowered spring/shock issue, not a tire issue. As for the "burning rubber smell", I have a leaking PS resevoir and leaking PS pump. As far as I can tell some of the fluid gets onto the exhaust which causes the burning smell. It seems to happen most when I am pushing the car a bit, just like you said. I'm not sure if it is high pressure caused by either high revs or hard corning loads pushing the pump a bit and causing fluid to spray on the exhaust. Under normal boring conditions it doesn't seem to happen. I'm postponing the fix until it is warm enough for me to spend some quality time in the unheated garage to look at it. Right now it's cheaper and easier to top off the fluid every other week. I will also be doing new upper thrust arms with 750iL bushings at that time, since I'm starting to get the shimmy under braking again. Someone asked why you would replace the whole arm rather than just the bushing, and the answer is that if you buy them from the right source, they are not that expensive and you can get the bushings pressed in as part of the price. Also, I've been told that some folks have found that once they have removed the arm and replaced the bushing, they find that the ball joint goes bad. Or maybe they just botched it when removing it. My car has 124k on it, so I figured it could use the whole arm. Hope this helped, and good luck on the work. Doug 94 540iA, 124k miles ------------------------------ End of [bmwuucdigest] digest(15 messages) **********
