Picked up a 996 GT3 last weekend and drove 1360 miles home from Denver to WV. Got a good feel for the car but haven't pushed her much in the corners... I have a track day coming up in October at Mid Ohio and wanted to see how she rotates before then. Was planning on 36F and 38R cold pressures. Is this reasonable?

Will post pics of my new Artic Silver GT3 shortly...

Thanks!
Ian

 

N

Ian good start pressures and also good hot pressure for track. For autox front sway 1 off full stiff rear sway full stiff. For track 1 off full stiff front and rear. IMHO YMMV

Peter

 

From Mich: PowerPoint on MSC.
Rear axle slip angle:
Decreasing the rear pressure will increase the potential of the rear axle
Little effect on rear axle slip angle from front pressure changes
Overall vehicle handling behavior and cornering attitude:
Big effect from front pressure changes
Steering gain decreases 20-25% between 26-38psi
Small effect from rear pressure changes: increasing the pressure will tend to reduce the understeer slightly
Overall recommended hot pressure targets:
Front: 32-34psi
Rear: 37-40psi
Autocross (slalom): Looking for same range (of hot pressures--may need to start at higher cold inflation pressures because of the decreased pressure gain in autocrossing).
Road: OE pressures
Rain: For both autocross and road racing, you may have to increase tire pressure 6-10 psi from what you would normally run in dry conditions. Your car and driving style in the wet is important here, so some experimentation may be in order.

 

Thanks guys. Should be fun!

 

Big differance between Pilot Sport cup, Pilot Sport PS2. Above is ok for PS2. If your question is about Cups then 34 - 35 is the max for the rears, Fronts 32-34