tyre pressures

Evolucion · Post by **Evolucion** » Tue Nov 12, 2019 6:01 pm

Evening all.

I've just bought a 2.0l for the wife, and its going to have new PS4 tyres on next week (just ordered from Costco - great price!),as the pirellis are diabolical in the wet and cold.

I remember back on my Carrera 4, 997 model, i ran the tyres about 3psi lower than what the book suggested as did many other owners and difference in grip was night and day. what pressures do you guys run in your tyres, or do you keep them all as per the book?

cj10jeeper · Post by **cj10jeeper** » Tue Nov 12, 2019 6:36 pm

Manufacture pressure and also on PS4’s

Evolucion · Post by **Evolucion** » Tue Nov 12, 2019 8:50 pm

The 4 tyres, if anyone is interested, which are Michelin Pilot sport 4 S for the 20" wheels were £663 fitted. the offer runs to the end of this week. they are an absolute steal at this price!

Tel · Post by **Tel** » Wed Nov 13, 2019 4:19 am

Wonder how much they are for 21", about 250 a corner?

dbv6s · Post by **dbv6s** » Wed Nov 13, 2019 7:16 am

I have the P4S’s from Costco as well, running 36 Psi all round

cj10jeeper · Post by **cj10jeeper** » Wed Nov 13, 2019 12:37 pm

Evolucion wrote: ↑Tue Nov 12, 2019 8:50 pm The 4 tyres, if anyone is interested, which are Michelin Pilot sport 4 S for the 20" wheels were £663 fitted. the offer runs to the end of this week. they are an absolute steal at this price!

Out of interest what sizes did you fit for this price?

Evolucion · Post by **Evolucion** » Wed Nov 13, 2019 4:42 pm

255/35/20 and 295/30/20

Evolucion · Post by **Evolucion** » Wed Nov 13, 2019 5:11 pm

dbv6s wrote: ↑Wed Nov 13, 2019 7:16 am I have the P4S’s from Costco as well, running 36 Psi all round

I'm going to set them at 34 when cold this weekend for a test and see how they get on, i feel the stock pressures are just a little too hard and especially at this time of year, the extra compliancy of a slightly lower pressure will help the tyres get up to temperature quicker and therefore aid grip and indeed comfort as it did on the C4.

We shall see.....

Dan_Veluwe · Post by **Dan_Veluwe** » Wed Nov 13, 2019 5:42 pm

I have the original Pzero. They were wearing more on the edges then in the centre,
not only from 'hard cornering' ..

So I raised the pressure from 2.5 --> 3.0 bar. Rockhard in comparison to 2.5 , but easy to get used to.
No striking difference in roadholding...

[ 2.5 bar is 36psi, 3.0 bar is 43 psi ].

Raised pressure at 18.000km's now 25.000km's :

- rears still can stay on for 3000 km's , [ then 17k miles ];
- front maybe 15.000km's more, [ then 25k miles ]

dbv6s · Post by **dbv6s** » Wed Nov 13, 2019 6:17 pm

Dan_Veluwe wrote:I have the original Pzero. They were wearing more on the edges then in the centre,
not only from 'hard cornering' ..

So I raised the pressure from 2.5 --> 3.0 bar. Rockhard in comparison to 2.5 , but easy to get used to.
No striking difference in roadholding...

[ 2.5 bar is 36psi, 3.0 bar is 43 psi ].

Raised pressure at 18.000km's now 25.000km's :

- rears still can stay on for 3000 km's , [ then 17k miles ];
- front maybe 15.000km's more, [ then 25k miles ]

Probably wouldn’t advise 43 psi...
Don’t the P zeros say on them not to exceed 40psi?

tyre pressures

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