What would a little bit more offset (of the wheels) would do to the car's perfomance and exterior? The reason I'm asking is that I like these ASA EM9 15x7 wheels. I don't want to change (or as little as possible) anything on the car. That's why I want to go with the 15 inch wheels. They are a little bit wider than the original (15x6) and insead of 35mm offset (for the original) have 42mm offset. Would the difference in the offset (7mm) + the difference in the width will have a major difference? Any problems that may occur? I'm thinking of putting my existing tires (205/60x15 Potenza RE950) on them.

Thanks

 

in extreme cases you'd be putting extra stress (wear) on your wheel bearings, affecting the dive & squat geometry, and enlarging your turning radius. Inasmuch as I believe a less than 10mm offset to be negligible, IMHO your swap will show little or no ill affects, if any at all... I doubt your car would even notice sucg h a small difference. But, I'm not an expert.

 

Then do you think the center of the tire would sit where it is now, or because of the offset will move a bit to the inside of the car? Or the wider wheel will compensate the difference in the offset and the center of the tire will sit at its original position?

 

With the wider wheel you'd be negating the offset by approx half teh diff between the stock wheel width and your *new* aftermarket width... does that make sense? I'm busy NOT thinking, at work, right now, so I don't know, off teh top of my head, the conversion from inches to mm, but you've got, what, a 1" wider wheel? convert that to MM, divide by half, subtract the difference in offset, and... now I've confused myself... I may attempt to describe it better, once I get home, if I've confuseded YOU as much as I have ME...

 

You didn't confuse me, I was thinking about the same thing yesterday. But I didn't know if the width of the wheel is in inches. So 1 inch is 25.4mm divided by 2 is 12.7mm minus the difference which is 7mm equals 5.7mm (say 6mm). And that's how much the wheel is going to move to the outside.

 

Besides putting additional stress on your wheel bearings look out for tire rub on your fenders.

 

The center of each wheel is moved to the outside by 7mm.

 

Well, the car's original tires are either 195/65x15 or 205/60x15. Either way there is no "rubbing" because that's what is "normal" according to the factory. And I don't think 6mm (or 7mm) offset will cause rubbing. Correct me if I'm wrong!

 

I didn't check tire sizes, I just heard you say your going wider and I threw out some advice.

 

That's what I want - an advice

Very useful link:
http://www.americanracing.com/techce...ch1§ion=tech#

BTW the original offset for 1993 Audi 90S is 37mm[:-]