Hi bsco...

A turbo with 15 inch rims? Check the tag inside the gas tank filler cover and see what tire size came as OEM on your car.

The bolt pattern is 5-108, but there aren't that many aftermarket wheels which have the correct offset.

On my car, I have Volvo's "Columbia" rims... those are the 16 inchers with the five propeller shaped spokes. I use 205/55-16 tires with no clearance problems. You can also run 205/50-16's for slightly less sidewall squirm, but I prefer the ride characteristics of the taller sidewalls, as well as their impact absorption on the pot holed streets of New York.

You can also use 17 inch wheels, but you'd have to go with a 45 series tire to avoid rubbing on the inner fender panels... they ride hard, and offer far less resistance to sharp edges and road imperfections.

Check these sites:

http://www.wheels-and-rims.com/
http://www.tirerack.com/
http://www.discounttiredirect.com/

After you're finished reading, how about re-posting your thoughts before you buy.

Have fun

Marty
'96 855T