Track tyre pressures
- Thread starter WILLR
- Start date
No experience of 987, but 986... (Should be similar)
I use 33F / 36R. With more experience and confidence, I would expect this to go back to the standard pressures of 29F / 36R as I got more confident of going into the corners faster, and therefore the underteer I experience gets dialled-out by the entry speed... The factory settings are probably going to be optimum for a fully experienced driver - you have to be taken round Weissach in a Boxster to experience what it can really do!
Nic and John use slightly different settings, no doubt they will chime in and add thier input [
]
All pressures taken "hot" of course. Don't forget to pump the tyres back up at the end of the day after they've cooled!
I use 33F / 36R. With more experience and confidence, I would expect this to go back to the standard pressures of 29F / 36R as I got more confident of going into the corners faster, and therefore the underteer I experience gets dialled-out by the entry speed... The factory settings are probably going to be optimum for a fully experienced driver - you have to be taken round Weissach in a Boxster to experience what it can really do!
Nic and John use slightly different settings, no doubt they will chime in and add thier input [
]All pressures taken "hot" of course. Don't forget to pump the tyres back up at the end of the day after they've cooled!
juliany27
New member
Interestingly, I checked my tyre pressures today and found that all 4 tyres were slightly deflated. I have now bought a compressor running off the cigarette lighter and found an immediate change in the handling of the car - absolutely amazing. The amount of air added was quite small, road handling improved and noise was reduced considerably.
Just for the information of non-techie drivers.
Just for the information of non-techie drivers.
...which isn't quite what I meant.[8|]
I mean faster in and harder throttle earlier and through the corner, dialling out the understeer.
The extra in the front seems to help get rid of the understeer I mentioned.
I'm not really sure how much is let out - I've always done it in stages (do a lap or 2, come in, adjust pressure, go back out, in, check & adjust, etc.
At the end of the day, I've never really noticed how much I've put back in, I just use an electric pump (as Julian has bought) and go back to the "normal pressures".
Sorry![&o]
I'm not really sure how much is let out - I've always done it in stages (do a lap or 2, come in, adjust pressure, go back out, in, check & adjust, etc.
At the end of the day, I've never really noticed how much I've put back in, I just use an electric pump (as Julian has bought) and go back to the "normal pressures".
Sorry![&o]
juliany27
New member
I bought my compressor at Argos for about £22.95 - it was the one very highly recommended in Auto Express earlier this year. Easy to use and digital etc; it stops when a pre-set limit is reached [if that makes sense to anyone].
I had a longish set of drives today; both before and after I had put air into the tyres. The difference was surprising. I found that the tyres went over the same lumps and bumps in the road easier and that road noise from the tyres was considerably reduced.
The moral of the story seems to be that one should look after and check the pressure of the tyres racing and otherwise, as frequently as one can. I believe that this will also improve the life of the tyres and increase fuel consumption.
I had a longish set of drives today; both before and after I had put air into the tyres. The difference was surprising. I found that the tyres went over the same lumps and bumps in the road easier and that road noise from the tyres was considerably reduced.
The moral of the story seems to be that one should look after and check the pressure of the tyres racing and otherwise, as frequently as one can. I believe that this will also improve the life of the tyres and increase fuel consumption.
Speak to Dave Blackley at Elite tyres (advert in PP). He is a regular at Titanic track days and normally gives us good advice for Pirelli (Corsa) & Michelin (Cup tyres) which are the most common used on the GT3's for track days. I've just bought a 987 S for Louise and it is doubtful that it will be used on track so I haven't asked about on-track tyre pressures.
As tyres are generally worked a lot harder on track the tyres get hotter hence tyre presures can go off the scale. Then they don't work and driving gets even more exciting. Generally we run around 2 bar on track which equates to around 32psi I think.
Make sure you remember to bring tyre pressures back up to normal road use because once the tyres have cooled down the pressures will be exteremly low and their is a risk that tyres can be rolled off the rims.
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