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Discussion Starter · #1 ·
I have saab 9-3 B204 Stage 3
Problems with traction in 1st and 2nd , especially when wet.

Current tyres and wheels:

Alloys: Saab made 6 spoke 16 inch / 6.5J
Tyres: kumho ecsta 215/55/16

I know that i can fit 225 on this wheels but...:p

Is possible to use 235 or 245 or 255 tyres on any other wheels, with no problems at all?????

What widest tyres have You seen in this car ?

Please help

Danny
 

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Discussion Starter · #3 ·
you can run an 8.5 inch wide wheel if you take the offset to +27 or lower, but you still cant fit more than a 225 tire.
even if i use 15 inch wheel with 235 or 245 tyre aspect ratio 40 45 , i mean generaly diameter of wheel+ tyre will be smaller than original ( 225 /50/16)
but wider .... even then 235 or 245 is not possible?
 

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if my memory serves me, my 225 on an 8.5 wide wheel is now a wider contact patch then a 235 on a 7.5

but my memory may not be right...
You are correct, the 235 on a 7.5" rim width is roughly the same contact patch as a 225 on a 7.5" rim width. I got a good deal on the 235/40's so that's why I went with it.

I think with rolled/trimmed fenders you would have little issue running 235/40's on an 8" width with the correct offset (low 30's). That's my next step.
 

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its possible, i just stuck with 225's since im on an 8.5 and have less than a fingers width between the tire and front suspension.

also depending on the tire, a 235 could wind up with a really soft sidwall on too narrow a wheel.
 

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I run 225/45 17 and they rub on the rear wheels. A lot.
Right, probablty because of the offset.

I have different offsets front vs/ rear on my 9-3. One offset will rub badly on the front of the rear wheel arch (or at least it did before I rolled the fender), the other offset does not rub at all. Same size tires all the way around.
 

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Hah, yes, I used a dense rubber mallet, then repainted the areas where the paint flaked off. On a nicer car I would have waited and done it properly.
 
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