Good morning everyone, just curious if I can go with a certain tire size on my 03 turbo. I have been running Hoosier rear 295/30ZR18 R7 & 225/40ZR18 on the front.
I would like to step up to the 245/40ZR18 in the front.
The overall diameter is 25.3 rear & 25.4 front. Will this interfere with the PSM. The set up that I've been running currently is not giving me any type of fault codes or letting the PSM kick on. Just wondering if this is an appropriate set up before I did order an additional set of fronts from Tire Rack.
The car is strictly used on the track for HPD events.

 

That front/rear ratio will work well. No PSM issues.