j3w3ll3r
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| posted on 26/4/11 at 11:53 AM |
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Tyre pressures
Hiya
What is the ideal tyre pressure for
15" toyo r888 for road and then for track
Cheers
Stephen
www.essexhomegame.co.uk
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shaun fulcrum
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| posted on 26/4/11 at 12:13 PM |
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Might be wrong but, 21 psi when hot for both is what I use and seems perfect 
Correct me if I'm wrong.
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j3w3ll3r
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| posted on 26/4/11 at 12:33 PM |
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Just been in the tyre shop to get the tracking done and they've said that we had 15psi in them which seems very low, so they pushed them up to
29psi (on recommendation)..
I think that seems a little steep.. ?
Any advice greatly appreciated.
Thanks.
www.essexhomegame.co.uk
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whitestu
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| posted on 26/4/11 at 12:35 PM |
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15 psi cold will be more like 18 hot. 29 is too high.
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Madinventions
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| posted on 26/4/11 at 01:06 PM |
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My car weighs 523kg and I run 16psi from cold for road use. Not enough track experience to say what track pressures should be.
29psi is ok for a 1500kg+ tin top, but way too high for cars as light as ours!
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Frosty
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| posted on 26/4/11 at 08:13 PM |
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No such thing as ideal - only ideal for your specific car and tyres.
Start with 18PSI cold and adjust accordingly.
If your tyres have soft sidewalls, you might want to add a couple of PSI. If they are very stiff you might want to remove a couple instead.
Ignore what the tyre shop tell you - they just bang in 30psi without understanding what that really 30psi does. It's just an accepted ballpark
figure for a road car - but not for a kit car 
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