SmokinGTS

We have a track day this weekend at the Ridge Motorsports Park along with a break in the weather. The morning temps will probably be in the high 20's with afternoon temps in the 40's. On NEW MPSS what pressure should I run. I plan to adjust after getting the tires up to temp, so it will be slow going to start.

Veloce Raptor

Start cold 35 all around and bleed down.

dawgdog

I will be there as well and this is my first event with this car and these tires. What are the hot temps we want to achieve?

911rox

I aim for 38f/39r hot on the MPSS with a pretty standard alignment...

tasman

do a search on this forum as there are several threads about MPSS tire pressures. Have fun.

CRex

Take into consideration most figures on this forum are for 3,000-3,300lb GT3's. If you're on a GTS you'll want to go a couple psi's higher to account for the higher axle weights.

SmokinGTS

I did a search and there is a wealth of info on the subject. I was mostly concerned with the cold outside track temperature being a possible problem. Thanks all for the post....

tasman

Makes sense.

ILLCOMM

See you there

https://rennlist.com/forums/997-gt2-...psc-42deg.html

911rox

Won't be an issue at all! I've run them in the rain and they come up to temp... If its not raining, you'll get psi increases of about 6-8+ psi even on a really cold day[... If cold but not raining, i'd start on 34-35 psi, Go out for 3-4 laps, get some temp into them and pop back to the pts to bleed down... Then re-bleed at the end of a couple more sessions and hot pressures will stabilise... U won't have any probs on MPSS

SmokinGTS

Just back from a great day at the track. Weather was cold 32 Deg. to start with mist and fog which turned to light rain later in the day. This is the Northwest after all. The Michelin Pilot Super Sports were just fantastic in these conditions. I ran cold 33f/37/r and warm temps got up to 39/43. The wear pattern on the tires was perfect. I just can't believe how well the tires stuck in these conditions.

DC640

I love MPSS. I just had one event on these tires and fantastic feedback. Learning on these tires gave me great confidence. Also, they are great on street and rain =)

911rox

Great to hear! They are a great street tyre option for track and do wear well.. Perform well in the wet

Glad it went well for you...

HarmonyJim

Any idea for normal street driving what amount of psi increase I should see on my 7.1 RS with the MPSS? Summer versus winter any different?

911rox

On a 997.2 gt3, i see 3-4psi during the winter and 4-6psi during the summer...