gedis080

..... and if to compare with stock 215/60R15 then 235/35R19 should fit better
than 255/35R19.
P.S. I don't know how 'V8QinNJ' did manage to post sizes table, i can do only attaching image ...
And why in mine Tire Size Calculator 235/35R19 showing Diameter Difference: 3.11% and in 'V8QinNJ' Diameter Difference: 1.26% ?? hmmmmm, very strange ...

1991 v8quattro

What kind of suspension is on your car. A 19/8 235/35 is more for a b5 s4. I have a set of 19/8 235/35 which is not wide enough of a rim for the v8 where a 19/8-1/2 is a better fit where the 8-1/2 can fit a wider tire than a 8 wide rim. I put my 19's on my b5 s4 and it's a perfect fit. It just doesn't look right on the v8 where a 19/8 1/2 is a lot better with a 245/35 would be a good fit if lowered turn to turn with no rubbing. Here is a tire calculator http://www.miata.net/garage/tirecalc.html

gedis080

I have KW coilovers (look in to my album). And if You see this thread pictures above, there is car with 235/35R19 tires and I believe there is
19/8-1/2 wheels.
I want as well R19 8-1/2 wheels (I'm not even talking about 8 inch wide), just have no possibility to try to mount them with tires on the car before buying.

1991 v8quattro

You will have no problem with a 19/8-1/2. I have a set of bbs with 10- 1/2 in back and 8-1/2 in front.

gedis080

Then maybe You have some pictures of Your car, especially front wheels ??
and pity, that those wheels and tires sizes are not known ......:

1991 v8quattro

Looking at those pictures they look like 20's. I don't have any pictures of my wheels since my winter ones are on but i will see if I can dig some up.