Tire Pressure Help Needed - Michelin PS Cup 2
Thread Starter
Burning Brakes
Joined: Oct 2002
Posts: 1,085
Likes: 27
From: San Diego CA
Tire Pressure Help Needed - Michelin PS Cup 2
First track day with the Z51 Stingray coming up in a little over a week at Buttonwillow. Anyone have cold and hot tire pressure suggestions for Michelin Pilot Sport Cup 2?
Melting Slicks
Joined: Apr 2016
Posts: 3,169
Likes: 861
From: Naples FL
If you're driving hard, start at 26-28 psi cold and aim for 32-36 hot. Above 38 they get unhappy. They can easily rise 10psi when driven aggressively.
Last edited by spearfish25; Jan 17, 2018 at 10:12 PM.
Tech Contributor
Joined: Oct 1999
Posts: 41,013
Likes: 9,773
From: Charlotte, NC (formerly Endicott, NY)
OM states to start with 26 cold but if you are running a Z51 with those tires I would probably start at 28 and then adjust in 1 lb increments up or down between sessions to resolve any handling issues I noticed during a session.
Bill
Racer
Joined: Mar 2016
Posts: 440
Likes: 157
From: Sayre PA
I run RE71 on my Z51. I start out at 26, and by end of the session I am around 35. 28 was too much especially in the rear, got twitchy. The Cup2 and RE71 do not stick well when cold so don't push it too hard in the first lap or so.
I run with the TPM display all the time, even on the street. I find the TPM to be quite accurate.
I run with the TPM display all the time, even on the street. I find the TPM to be quite accurate.
