flash1034

Has anybody put 245/35s instead of the stock size 235/35 size tires on the front of a 997/GT3? Would there be any positive or negative ramifications of such a move? Seems like a little more front tire would be a good thing?

Thanks,

Flash

flash1034

Has nobody done or even considered this?

Flash

GrantG

I don't understand why Porsche doesn't have a sophisticated enough ABS computer that can calibrate itself to the tire sizes. It should be able to compensate for any reasonable differential in speed.

For example, if the system periodically measured the axle rpm of each tire in a variety of driving conditions and speeds, it should be able to calculate the effective diameters of each tire within a very small tolerance. This would improve ABS perfomance and TC, etc...

Terry L

Stefan Tisseront and Ryan are running this size up front . Stefan wants to go higher.

flash1034

What would the positives and negatives be from puting 245s on?

Flash

str8ner

Flash,

Like they say, bigger is better! I do think that this car understeers a lot. Adding some rubber in the front decreases the understeer. I am currently running 255 in the front with 315 in the back. I love it. If they would fit I would run a MPSC 265 in the front but I am not sure they would fit. 245 or 255 make the car turn so much better. Try it and you will love it!

Stephan

flash1034

Any problems with normal ABS operation, PASM operation or rubbing?

Thanks for the info.

Flash

str8ner

No problem with MPSC 315, 235, R888 255,315 or 245,305, or Hoosier 245, 315. All of these on 18". If anyone has tried the 265 let me know?

Stephan

mdrums

As long as you keep the outside diameter within 4% of stock you are ok from everything I've read. I see all sorts of tires and sizes on 996-997 based cars at my track events and everyone seems to be fine.

prysma997gt3

Stephan,

which 18 wheels did you get? I take you got 9s and 12s correct? I'm looking at CCW.

Thanks

Luiz

jrgordonsenior

FWIW.... I put the 265 MPSC's on the front of my 993TT. It took 9-1/2 inch rims and monoballs with 3.0 degrees os neg camber to get them to fit but well worth it....

str8ner

Prysma 997GT3,

I have 2 sets of CCW. 9 and 12. Looks great. Your car looks great. Could you post a picture of it? Who did your graphics?

Thanks,

Stephan

str8ner

Jr Gordon,

I wonder what it would take to fit them on a GT3. Why did you need 9.5?

Thanks,

Stephan

jrgordonsenior

They're the largest I could fit in the wheel well and the recommended section width for the 265's...

mdrums

Just ordered the CCW C14's yeasterday from John and he has been great to work with...very laid back and honest. Lots of guys are running CCW at my DE's.