Doesnt most trackdays that arent open pitlane have a one lap warmup?
usually a sighting lap. No great speed and not enough to get heat into tyres etc.
My tyre pressures were set at 35psi before going on track and after 8 laps the were at 42psi on one side and 40 on the other.
Best solution is to nitrogen fill. Cheap and an easy fix and helps on normal motorway journeys etc.
mmm nitrogen thats a tad overkill IMO. Ill keep track on my pressures I just need a good baseline (cold setting to work on, Im guessing the sides will be all over the place so best bring my air compressor for the ride home!)
nitrogen is only a quid a tyre from qwik-fit mate
Nitrogen moves as well Neil, trust me.
Choice of tyre pressures are down to the individual and the type of tyres they run and the type of track and whether it is open pit lane. Most run at a pressure that suits there driving style and what they are comfortable with.
At Knockhill for instance, running the Zed on open pitlane, if I am running "standard" tyres then I start cold at 35psi all round.
After a few warm up laps and then a few spirited laps I will come in and check the pressures which on a summer's day will be circa 44psi. I will reduce all to 35psi except the L/H front which I will reduce to 37psi.
I will then have a serious 10 lap session and the pressures will be rechecked and they will more than likely be back up to around 40 psi. I will reduce again to 35/37 and that will be me for the rest of the day.
The one thing that you must watch with this strategy is that if you have an extended cool down period in excess of 15 minutes then you must be extremely carefull on your next first few laps as the pressures will be extremely low, however once you are back in the groove you will soon be back up to 35/37.
I use the same strategy for slicks however the numbers are different.
Alex