Tyre pressures for trackdays

[Wayland]

Does anyone know of the most appropriate tyre pressures for a trackday?

I've got an Avant and am doing my first trackday in the RS4 in January. I usually overinflate the tyres on my bike for trackdays but wondered what the best advice is for an RS4.

Thanks

[simple1]

Tried mine in a couple of different places and found them too hard on the front on standard pressures, run normal back pressure and drop the fronts 28psi hot on the front, but depending on the track you will get very heavy wear on the outside edges but no understear at all.

[sykotoy]

Tried mine in a couple of different places and found them too hard on the front on standard pressures, run normal back pressure and drop the fronts 28psi hot on the front, but depending on the track you will get very heavy wear on the outside edges but no understear at all.

Thats way to low dude, nowonder you get wear....jesus


Firstly what tyres will you be running ???????????

[Scotty]

I find that if they're soft the tyre moves around and hence heats up too quickly. Then the tread blocks soften and it all ends up with over heated runnber that goes off to quick and wears out in no time.

I normally add 10% when the tyres are stone cold and this keeps everthing fine.

[Andiroo]

But if you add pressure, after a couple of hot laps the tyre pressure will increase and therefore be over-inflated. The only time you go out with extra pressure over oem is when you have high profile tyre, and that's only to protect the sidewalls. B5's and B7's don't run low profile and have pretty strong sidewalls no matter what tyre.

I've always come down from oem by about 7psi, but take the first two to three laps pretty easy to get in the heat, also important is a cooling down lap/half lap. If you go out with oem pressures and came in after 5 hot laps laps and took a reading you would be about 8 to 10psi over inflated - that applied to me on Yoko 19's on the B5 and PS Cups on the 996. If in any doubt do the test, you may have a shortened first session, but you will learn about your tyres mate

I've managed in the past to have both Yoko's and Cup's last 8k with at least 4 trackdays on each, one of which on the Cup's included a Spa/Ring/Cadwell long weekend with no probs

Cheers,

Andiroo