[Biturbos4] RS4 wheels fit on S4?

[Grant]

Yes, they probably will fit, and 35mm is probably "no big deal", but 
I'll take issue with "35 has no (as in zero) ill effects".  Its a 
matter of degree, and its wrong.

I've compared pretty much apples to apples 17 x 7.5 x 35 and x 45mm, 
and there is a difference in feel and behaviour.  Now 0.4" isn't much, 
but it is incorrect.  Simple logic dictates that if you put the center 
of force farther out on a lever, it will have a greater effect  - 
torque steer, bump steer, ball-joint wear, tie rod wear, etc..  Maybe 
no big deal, but clearly noticeable, and clearly more strain, and .....

So at the end of the day, do I run 35mm offset for my winter 16" tires? 
  Yes - there's no alternative that I can find.  And I looked, hard.  Do 
I like the situation?  Not after comparing correct vs incorrect at 17". 
  Would I buy a 17 x 7.5 that was the wrong offset, knowing full well 
that I can get all the OEM *correct* ones I want?  Never.

I guess my beef is that most purported experts dont even understand 
what offset is exactly, or how it relates to scrub radius.   Or worse, 
they choose to sweep it under the table in the name of sales. If you 
look on otherwise respected sites, like RONAL or TireRack, they explain 
offset in terms of appearance and brake clearance.  This is just, plain 
wrong.  So I want people to know a few of the facts and decide for 
themselves if the effect is significant.

Grant


On May 30, 2005, at 2:02 PM, docwyte at comcast.net wrote:

> Running a 35mm offset isn't a big deal.  I have SSR Comp 17x8.5 ET35 
> on the car right now and there are no ill effects.
>  
> If these are RS4 wheels or RS4 replicas (far more likely) then they'll 
> fit fine with no spacers needed.
>  
> -josh
>  
>> -------------- Original message --------------
>>
>> > They buyer doesn't specify the offset, but I would guess its 35 mm,
>> > which is 0.4" too far to the outside.
>> > If he then recommends a 10mm spacer (another 0.4", you'll be dealing
>> > with geometry that's WAY off, IMNSHO.
>> >
>> > I would:
>> >
>> > 1) avoid offset other than stock, which on a BiTurbo is 45mm (or 
>> 43mm
>> > in some cases)
>> > 2) NEVER use a spacer
>> > 3) Rarely buy wheels from someone who doesn't know what offset is, 
>> but
>> > claims to know what they fit
>> >
>> > Let's face it, even the Tire Rack and other honest, reputable shops
>> > play this trick to a small degree - sellng 35mm offset 16" rims to
>> > clear our big front brakes. But its still "wrong", increases strain 
>> on
>> > the suspension, changes scrub radius, and overall does nasty things.
>> >
>> >
>> > Now that I've ranted, I'm surprised that a 17" x 7.5" wheel won't 
>> fit
>> > the big brakes with stock offset of 45mm.
>> >
>> > I'm also surprised that RS4 wheels are 17 x 7.5 (they're not)
>> >
>> > Grant
>> >
>> >
>> > On May 30, 2005, at 12:36 AM, Adam Schwartz wrote:
>> >
>> > > Hey all,
>> > > I sent this message the other day, but it didnt get through. 
>> Maybe the
>> > > server was freaking out?
>> > >
>> > > Anyway...
>> > >
>> > > Ive been looking at some new wheels and I have heard different 
>> things
>> > > on if they will actually fit. Anyone know for sure? Following is 
>> an
>> > > Ebay link to the wheels I am talking about - this auction the guy 
>> says
>> > > we need a 10mm spacer - yet I think I have heard others say they 
>> are
>> > > not needed.
>> > >
>> > > What say you group?
>> > >
>> > > Link:
>> > >
>> > > http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?
>> > > ViewItem&rd=1,1&item=7976989070&sspagename=STRK%3AMEWA%3AIT
>> > >
>> > > thanks,
>> > >
>> > > Adam
>> > >
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>> > >
>> >
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