Slicks - pressures?

[Ivaan]

I now have a set of Michenlin 16/53-13 slicks on my trackday rims.

 

What pressures are they usually run at?

 

Thanks,

 

Clive

[Pendennis]

20psi hot

[oldbutnotslow]

Mmm I would say anywhere between 15 to 20 hot but you need to experiment and see how they feel and work at different pressures front and rear.

 

Its different for a heavy person than a light person.

 

The ambient temperature and temperature of the track surface will have a significant bearing as well

[catastrada]

We target 1.5 bar which is 21.8 psi when hot.

[Mankee]

You need to have a play around and see what suits your driving style, bhp and car setup. When I used 16/53-13s on 6J rims all round, I used 18psi front and 16 psi rear when hot. The rear still suffered from oversteer, even though they got hotter to touch than the fronts.

[Pendennis]

That's because you've not got enough pressure in them 😬

I would never dream of running any tyre on a lightweight seven less than 20psi, Castrada is more or less spot on specific but I do not expect your notice much difference between 20-22. However either side and your out of its best performance range.

 

Edited by - Pendennis on 22 Jun 2014 18:55:58

[Mankee]

I've since changed rear tyres which has moved the balance but I will play around with the pressures some more.

[Ivaan]

Thanks guys.

 

The tyre fitter though 26psi when hot, which seemed high to me as I run at 16psi ( cold ) on the road ( Toyo R888s )

 

I'm a bit concerned that the extra grip could effect the Ital live axle??

 

The R1 weighs in at around 480 kgs with me in the car and a tank of fuel, with approx 160 bhp. Not huge torque on the BEC though.