Factory Tyre Pressures Aside......

[robbosliding]

My new 718 GTS Boxster is shod with Pirelli tyres. Can anyone recommend a good cold tyre pressue for road use. I anticipate some may well say the factory pressures should be used but this is not always the best way forward. My 997 911 Turbo was transformed when different pressures were used as was the tyre life. Better handling, less road noise, better wear. Any knowledge here? Thanks in advance.

 

[Purple Haze]

I bought an analogue tire pressure guage from Amazon 3 years ago for £11.95. Well packaged and constructed, very easy to use. It is still the same price, also it's on one day delivery for Prime Members. Recommended unreservedly.

 

[Purple Haze]

I bought an analogue tire pressure guage from Amazon 3 years ago for £11.95. Well packaged and constructed, very easy to use. It is still the same price, also it's on one day delivery for Prime Members. Recommended unreservedly.

Oops! I should have mentioned it's a 'Tiretek Premium Tyre Pressure Gauge'.

 

[AndrewCS]

Given that factory recommendations are for `cold` @ 20`C ... I use the guidance in https://en.wikipedia.org/wiki/Cold_inflation_pressure ... as rarely 20`C `up here` []

 

[MrDemon]

swap the tyres for PS4S

 

[s999sws]

PS4S on comfort setting, 30psi. 981 20inch wheels.
Just fine.
SWS

 

[adrianb]

Been running my Boxster 981S with 20" at 2.3bar all round since purchase 2 years ago. Pressures go up to 2.6 at 30c in France ! Now decided ride feels too hard & bumpy over the increasingly shocking uk roads so just lowered to Comfort 2.1 all round. Going Silverstone tomorrow for a Porsche Driving Experience in 718's so will let you know if ride feels better.

 

[adrianb]

Hi Guys. Just back from Silverstone 200mile round trip and yes I would say the ride does feel more comfortable, still firm but not as harsh going over cats eyes etc. Pressures as displayed on dash went up to 2.3bar or 33psi with air temp 20c & sunny. I drove a Boxster S PDK and Cayman manual which stuck to the track like glue and I must say did not notice the lack of 6 cylinders but there again I was concentrating on keeping it on the black stuff ! The one car I checked was showing 14mpg average ! I got 38mpg on way home.
Enjoy your cars.

 

[Wollemi]

It is now standard Porsche procedure to fill tyres with nitrogen rather than air and all OPCs are equipped to do this.
The major advantage is that the tyre pressure does not change anything like as much with change in temperature due to the nitrogen being used is dry rather than compressed air which has a significant amount of water vapour in it.
Since having nitrogen filled tyres fitted by my OPC two years ago I’ve found that pressure is maintained for much longer and I don’t have to reduce pressure when the tyres get hot at a trackday.