What tyre pressure for 19s?

mathias

Member
Recently fitted 19 Csl reps. 235/35 front and 265/30 rear. Stock pressure says it should be 2.1 bar front and 2.2 rear for the 18s.
Any suggestions for the 19s?


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BMW pressures for the M3 CSL are around the 35 mark, I run slightly less but not as low as Alis.
 
i run the bmw spec CSL tyres pressures @ 35psi all round.... these feel nice to me, ideally you want them to be around 40psi HOT according to a michelin Tyre engineer is spoke to @ a competition i won last year :-)
 
Beedub said:
i run the bmw spec CSL tyres pressures @ 35psi all round.... these feel nice to me, ideally you want them to be around 40psi HOT according to a michelin Tyre engineer is spoke to @ a competition i won last year :-)
I also run 35psi (2.4 bar) all round on the street... On the track I lower them to around 32psi and lower, when they get heat up by track driving they are back on 35psi from the heat. Personally I never exceed 35psi... Before I knew anything about tyre pressure I did not lower my tyre pressure on track; so they got too hot and the pressure was around 40psi. The grip was terrible and the tires got really soft...
 
Franzino said:
Beedub said:
i run the bmw spec CSL tyres pressures @ 35psi all round.... these feel nice to me, ideally you want them to be around 40psi HOT according to a michelin Tyre engineer is spoke to @ a competition i won last year :-)
I also run 35psi (2.4 bar) all round on the street... On the track I lower them to around 32psi and lower, when they get heat up by track driving they are back on 35psi from the heat. Personally I never exceed 35psi... Before I knew anything about tyre pressure I did not lower my tyre pressure on track; so they got too hot and the pressure was around 40psi. The grip was terrible and the tires got really soft...

apparantly these high performance michelin tyres were designed to run 40psi hot..... i can only pass on valuable info learned on a proper michelin tyre testing day.... ever since then ive ran what the engineer told me too and i have to say theyve performed great... i do find the tyres overheat quickly on the track but they are road tyres at the end of the day.... not track tyres.
 
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