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i know the pictures are 255/35/18 cuz my car is a RWD sp staggered setup. I just took the picture to show the thread. i'm selling my front 2. which is 235/40/18

 

we can't run these on our quattro's car's though right? to much of a circumference difference i believe.

 

aspect ratio is fine, width (255) will be a problem on lowered cars.

 

prob rubbing issue?

cuz I had 255/35/19 in the rear and had rubbing issue

38 was the offset, but i machined it down to 35, but still rubbing

may be itz because 19"...i donno


do you have pics?

 

you had the right idea with the offest.. if you were running 18s. 19s with the same aspect ratio will have a larger over all diameter which will cause rubbing issues.

here's the formula

255/35/R19

255 = w
35 = ar
19 = d
overall diameter = D

D = d + 2(w(ar/100))

D = 19in + 2(255mm(35/100)

D = 26in

if you were running 18s...

D = 25in

 

So you think that 18" staggered set up won't have any rubbing issue?


Im on 04 a4 qtro usp with lowered with tein spring.

 

Can't say that I know that for certain. see similar thread:

https://www.audiforum.ca/audi-s-rs-m...need-help.html

 

I just want to clarify....a 235/40/18 has a circumference of 79.8 and the 255/35/18 has a circumference of 78.6. Can we run a set up with quattro where front and rear tires are different rolling circumferences without screwing it up? My A6 rolls on 245's so I'm not worried about 255's rubbing.

 

Oh sorry I had a brain fart there.

No... by no I mean, not a good Idea on Quattro cars. The only way you can run a staggered setup on our cars is if the overall diameters, front and back, are the same.

Quattro is a mechanical awd system that makes all of your wheels spin at the same rpm. Therefore, if you have different diameters on your tires, the tangential velocities will be different, causing the front and back tires to be out of sync.

 

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