Deryck

Any advice on tyre pressures for track days?

Deryck

Steve vRS

Start off with 10% extra all around. Monitor the wear on your sidewalls. If it looks like the tyre is rolling, stick another couple of Psi in.

Steve

Chungster

but doesn't the pressure in the tyre go up anyway, due to heat generated from a severe pounding on a track!

So, I tend to do nothing to mine!

Hoppy

This is a massively complex subject, and the right answer equals racing success. Luckily, on track days, we ain't racin But we do put our cars through massive stresses, hugely removed from anything you could possibly do on he road, within or without the law.

Basic track day rules are don't run new/newish tyres unless it's wet - they will overheat, give **** grip, and end up wrecked. Expensive Old tyres are best.

Then run high pressures, to keep the side-walls stiff. Around 40psi. But it all depends...

I start off with road pressures (33/31 cold) which quickly rise to 40-ish in anger (hot). Then they get hotter, and I let them down. What to do front-rear and up-down as the day goes on is so complicated that I won't go in to it, even if I could (and I can't).

But I think it's true to say, as a massive generalisation, with a road car on road tyres, keep the pressures up. At the end of the day, let them cool thoroughly, and maybe pump them up to where they should be for normal driving.

Richard.