Grand Prix GXP

Hi there, I'm considering getting some generic Grand Prix wheels to run snow tires on my GXP. Has anyone else done this, or would it compromise something else (I believe MPH would be miscalculated) and not be worth the trouble?
I think stock Grand Prix rims are 16 inches and the stock GXPs are 18. Thanks for your help!

gilroy222

I use black steel 17's for my snow tires and theres no difference

El Cid

I do exactly as gilroy does. Tire size is in my signature below.

jbelant

The wheel diameter is irrelevant. You want the loaded tire radius of the snow tire to match the OEM tire, or as close as possible. Measure it from the wheel center to the ground with the car sitting level.

Grand Prix GXP

Thanks guys, I appreciate the advice! Will be nice to get some traction this winter.

'pacheMarshal

I don't think the 16" wheels will fit over the brakes. pretty sure you need 17's to clear them.

8.Lug

Use this calculator to find out exactly what size tire/wheel combo you need to stay in spec.

http://www.willtheyfit.com

'pacheMarshal

where did you guys get the 17" steel wheels?

91parkave

iTrader: (4)

What some don't understand in this thread is that you have to have a 17inch wheel to clear the factory brakes. The 17inch spares steels were available on buick lacrosse Lucerne and and Bonneville gxps. EBay is your friend

'pacheMarshal

do you mean the 17X4 spare tire wheels?

DREDDJoseph

Not sure if the GXP's are the same but i have 16inch steel wheels on my 2007 Impala SS. Im using the General snow tires and they are Awesome very good inivestment for the winter.