Tire Pressure

[Ghostrider 310]

I'm running 19's at 30F 31R that is what the selling dealer recommended and set them to. I'm with Stephen, IMO 36-38 is going to cause cupping.

PS I think checking the tires with a known good gauge is useful even with TPS which I think reads artificially high.

[The Radium King]

i run 29/36 as per porsche on the street. i take that pressure to the track and, when the tires get hot, they swell to 34/40. at 34/40 the fronts are starting to roll onto the sidewall and the rears are only running on their middles, so after a few laps to heat the tires i modify to 36/38 and the car drives like it is on rails and the tires wear evenly.