4g track day tyre pressures

chrismc · Post by **chrismc** » Fri Jul 06, 2012 10:56 am

Just wondering what pressures you all tend to use on track?

Car is a stock 4ws 4g on 205/55/15 T1-R Toyo Proxes to be driven on a somewhat damp Castle Combe tomorrow

Cheers

Chris

Post by **Merlin** » Fri Jul 06, 2012 11:01 am

IMO stick to road pressures for in the wet, 32 PSI when cold. Heat wont as easy get into the tyre and you'll be driving slower than in the dry resulting in lower hot temps. If you have a pressure guage adjust if you think they are too high when hot.

chrismc · Post by **chrismc** » Fri Jul 06, 2012 11:07 am

Sounds fair

I can then adjust the rears by a few psi either way depending on how it feels.

With a stripped out rear end it feels quite lively at the back end on the road (in the dry) using stock pressures

Got a feeling the weather tomorrow is gonna have me crying out for a slip-diff box

Dino · Post by **Dino** » Fri Jul 06, 2012 11:55 am

I usually lower pressures a few psi depending on track conditions.
As soon as i get in from a session while tyres are hot i adjust them to close to oem pressures.

Post by **Merlin** » Fri Jul 06, 2012 12:02 pm

So many factors affect what is the optimal PSI to run, weather, tyre size, tyre sidewall stiffness, car setup, driving style. Without a pressure guage it's impossible to get it right. In the dry with my RainSports I start at 30PSI cold and adjust from there. With the semislicks its 25PSI from cold.

Post by **4thgenphil** » Fri Jul 06, 2012 8:32 pm

always check mine hot after a few laps

toyracer69 · Post by **toyracer69** » Mon Jul 09, 2012 2:14 pm

I start at 26 PSI on my ATR on a dry track session.

Lude Generation

4g track day tyre pressures

4g track day tyre pressures

Re: 4g track day tyre pressures