What Psi For Semi Slicks On Track

[hughman]

Hello,

Just wondering was psi I should be running in my Toyo R888 tyres on my R33 GTR for an upcoming track day? A guy from a tyre place said around 27psi? I thought it would be more like 34-36?

Thanks.

[racegtst]

I start at 26 cold and run them to 31 to 32 hot.

[_Wing_]

Something around 32 would be a nice start, move it up and down between runs by 2psi and see how you like it.

[_Wing_]

hot*

[sav man]

Each brand is different. I run 30psi hot on my Dunlop's, any higher than that and I chew the centres out of them

[racegtst]

I run the Toyo R888's. They tend to be ok on a heavier car like the R33 for 5 laps or so then the back starts to get very squishy.

Running on pressure as I mentioned above, the wear rate has been even so far. Running neg 4.5 camber at front and neg 1 camber at rear can't remeber toe.

[Mr. Untouchable]

Bit of a hijack, what size tires on what size rims was that racegtst?

[racegtst]

Bit of a hijack, what size tires on what size rims was that racegtst?

245/40ZR17

[hughman]

Thanks for your answers. I'll get them to put 26psi in them when they fit them to the rims. And see how they go at 30-31 hot on track.