Andrew, Sure the backspacing will change with a change in wheel width but the offset will not.
For example i currently have 205's on my 13x6's with a 23mm offset, if i get 205's on my 16x7's with the same 23mm offset sure the wheel will move closer to the strut and the guard but the tyre will not move at all ! the wheel will simply move half and inch inwards and outwards so by changing the offset from 23 to 18 i will be just moving the whole wheel/tyre assembly out 5mm. sorry really hard to explain, please shoot me down if im wrong anyone Chris King ----- Original Message ----- From: "GREENBURY, Andrew Robert" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, February 01, 2003 5:49 PM Subject: Re: Wheels - Chris S > Gday Chris, > > What 16*7s are you looking to buy? > > Ive been trying to work this sort of stuff recently myself. Because offset > is from the wheel centreline to the mounting surface, it changes with > wheel width, so technically you wont just be moving the wheel out by 5mm. > > * Your current 13x6s with 23mm offset, have 7in total width=178mm. > * mounting surface to inside of wheel rim (backspace) = 178/2+23 = 112mm > * mounting surface to outer rim = 178-112 = 66mm > > * The new 16*7s with 18mm offset ahve 8in total width = 203mm > * mounting surface to inside of wheel rim (backspace) = 203/2+18 = 120mm > * mounting surface to outer rim = 203-120 = 84mm > > ie the outer surface of the new rims will actually be 84-66=18mm closer to > the guards than your current rims, not just the difference in offsets. If > you've got >18mm clearance from your current rims to guards (and >8mm to > your struts etc) then they could fit. But the tyres will require further > clearance. > > This week I tried a 15x6 rim with 6mm offset on my car - this has a > backspace of 95mm, and mounting surface to outer rim distance of 83mm ie > pretty much the same as your 16s. Unfortunately, with a 195 50 15 tyre > they looked like being inline with the guards, so it was questionable > whether they'd fit at all after the car had been lowered (I should have > sat on the front to check but I didnt think :( However, I dont > have rolled guards and 240K struts which stick the wheels out 8mm closer > to the guards than standard. Same wheel/tyre on the rear had a bit more > clearance. I ordered some 15x6in with 20mm offset to give an extra 14mm > clearance to the guards. > > Let us know how you get on with the 16s - can you trial fit them to check? > > Andrew > > > On Sat, 1 Feb 2003, Chris king wrote: > > > My wheels now are 13x6's with 205/60-13. So basically i am not increasing > > the tyre width just wheel size and i am moving the wheel out 5mm closer to > > the guards. > > > > > > > > ----- Original Message ----- > > From: "Chris Simpson" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Saturday, February 01, 2003 4:23 AM > > Subject: Re: Wheels > > > > > > > What width are your 13" wheels? > > > > > > The 5mm, wont make too much difference but the change from prolly 5 or > > 5.5" > > > to 7" will! > > > > > > TO get 16x7's on they will need to be exactly right, but it can be done. > > > > > > I would question the need for 16" rims aswell, sure they look trick, but > > > alot of the time they arent any advantage, and some times a disadvantage > > to > > > the handling, as well as the legality and licencing of the car. > > > > > > Chris S > > > > > > ----- Original Message ----- > > > From: "Chris king" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Friday, January 31, 2003 9:59 PM > > > Subject: Re: Wheels > > > > > > > > > > Also the tyres im gona run are 205/45-16 yoki 539's > > > > > > > > Cheers > > > > > > > > > > > > ----- Original Message ----- > > > > From: "Chris king" <[EMAIL PROTECTED]> > > > > To: <[EMAIL PROTECTED]> > > > > Sent: Saturday, February 01, 2003 12:44 AM > > > > Subject: Wheels > > > > > > > > > > > > > Im about to purchase some 16x7s and need to know what will fit. > > > > > > > > > > My 13's ive got now are about 23mm offset. The ones im looking at are > > > 18mm > > > > > offset. > > > > > My gaurds are rolled and the way i see it 5mm can't make much of a > > > > > difference as there seems to be a bit of room > > > > > > > > > > any help would be great, espsially what people have actually got on > > > their > > > > > cars! > > > > > > > > > > Thanks Chris King > > > > > > > > > > > > > > > > > > > > > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
