Kowalski

I'm researching some 18" wheels for my new GTO and wanted to know what the offset of the factory wheels is? Also, is the bolt pattern spacing 120mm?
Thanks

Rob

iTrader: (6)

I think its +45mm but not a 100%. Bolt pattern is 5x120.

CSiJason

+48mm is stock and you'll need 5x120 bolt pattern. (Same as most wheels for BMW's and many Audi and other euro cars.)

For wheel size help, this chart will tell you roughly what fits with the least modification. It is not exactly flawless since some wheels and tires are not exact fit like one would expect.

WIDTH..........OFFSET............WIDTH OF TIRE
7.0...............+26/+65.............215/225/235
7.5...............+33/+61.............215/225/235/245
8.0...............+39/+55..............225/235/245
8.5..............+45/+48..............235/245/255
REAR ONLY
8.0................+36/+65.............245/255
8.5................+42/+65...............245/255
9.0.................+48/+65...............255/265/275
9.5................+55/+64...............265/275/285

OFFSETS GREATER THAN SHOWN ABOVE WILL RUB ON REAR
FENDER LIP. (25MM FENDER LIP)

Kowalski

Thanks for the replies. So I guess the bolt pattern is 120mm. I thought I read somewhere that it was actually slightly larger and although 120s would fit, they weren't ideal.