Tyre pressures

[Kenty]

I have RFT and need a decent tyre pressure set up for a track day I've got in a couple of weeks, first off what tyre pressures do you guys run and has anyone any idea of a good track set up?

 

[playalistic]

Which tyres/sizes otherwise you're asking how long is a piece of string

 

[Kenty]

Bridgestone Potenza, front 225/40 R18, rear 225/35 R18

 

[Kenty]

Any help would do! What are the normal pressures you put in your tyres?

 

[adam04]

There should be a card on the inside of the drivers door which shows which tyre pressures you should use.

 

[Kenty]

There should be a card on the inside of the drivers door which shows which tyre pressures you should use.

First place i looked but there aren't any psi figures thy make sense tho, numbers in there hundreds. That's the reason for me asking.

 

[Half Colin]

Mine says 2.3 front and 2.7 rear - and if you need that in old money.
Pressure conversion

 

[Kenty]

Mine says 2.3 front and 2.7 rear - and if you need that in old money.
Pressure conversion

33 front, 39 rear. Is that correct because that seems very high. I used to run 23 front, 25 rear on my old car!

 

[Half Colin]

Mine says 2.3 front and 2.7 rear - and if you need that in old money.
Pressure conversion

33 front, 39 rear. Is that correct because that seems very high. I used to run 23 front, 25 rear on my old car!

I suggest you check the plate in your driver's door jam and use the conversion chart or you could also check the owner's manual.

 

[Jembo]

From my mate who races Porsche's, this is how his team balance their tyre pressures by using one of the highly accurate hand held guages with the rubber pipe attachement (approx a foot long)

THEY START AT RECOMMENDED NORMAL TYRE PRESSURES.

they then go for a warm up... come in, check the pressures again & evenly balance them back down to to the recommended normal pressures... go out again & continue in out in out until they all become properly balanced. this is why you see them continually going out & coming back in... Eventually tyres settle down & they'll be balanced.

Agreed if you have to warm them up each time you go out as they will be a bit sloppy at first, hence why you see them all weaving again to get them up to operating temperature.

A properly balanced set of pressured standard tyres will surprise u just how well they grip once warm... just remember to put air back in them for the journey home & the next day once you've finished for the day.

Try it & see how it works out, but don't use a cheap tyre pressure monitor

J

 

[Jimmy Gee]

When pressuring your tyres cold put a couple of psi less in because as your tyres warm up the air in the tyre expands causing higher pressure. You can then bring them back down after a few laps to even them out.

And if your pressures dont rise enough, try harder lol :evil: