Traction Expectations
Race Director
Joined: Mar 2006
Posts: 15,362
Likes: 198
From: Tampa
Tire pressure probably way to high. The new PZero N1 version is not a bad tire. The older N0 version was a harder compound but still didn’t exactly just break lose at highway speed changing lanes.
Thread Starter
Rennlist Member
Joined: Apr 2018
Posts: 333
Likes: 154
From: South Carolina
That sounds like part-load comfort pressure. My only other advice is, next time you 'test' traction, put the PCM display on the TPMS screen and note the operating pressure. If the pressures aren't at least a couple PSI over cold pressure then the tires are still pretty cold.
Do you note any indication of PSM activation in the cluster when you break traction? (Traction control is ON right??)
Other than that I can't offer any Porsche-specific advice, beyond P-Zeros being very cold-blooded tires, since the Turbo is AWD and the 991.1S doesn't have the torque of your .2 GTS. The non-Porsche-specific advice is that our Z06 will break traction without too much fuss if the road temps are in the 50s or lower.
Do you note any indication of PSM activation in the cluster when you break traction? (Traction control is ON right??)
Other than that I can't offer any Porsche-specific advice, beyond P-Zeros being very cold-blooded tires, since the Turbo is AWD and the 991.1S doesn't have the torque of your .2 GTS. The non-Porsche-specific advice is that our Z06 will break traction without too much fuss if the road temps are in the 50s or lower.
Addict
Rennlist Member
Rennlist Member
Joined: Oct 2003
Posts: 17,275
Likes: 2,152
From: Gone. On the Open Road
RL Community Team
Rennlist Member
Rennlist Member
Joined: Jul 2003
Posts: 2,691
Likes: 616
+1 on pirellis
48 degree dry day in florida and at very moderate speed the pirellis gave me a pucker moment i will not forget.
Pirelli P-Zeros absolutely suck for traction when they are cold and barely work in 50-degree temps.
That written, what tire pressure are you running? Full load Normal? Partial load normal? Comfort Full Load? Or Comfort Partial Load?
The last is what you probably should be using. The first - which is factory default - pumps the rears so high that even warm P-Zeros will break traction with little provocation on not-warm roads.
That written, what tire pressure are you running? Full load Normal? Partial load normal? Comfort Full Load? Or Comfort Partial Load?
The last is what you probably should be using. The first - which is factory default - pumps the rears so high that even warm P-Zeros will break traction with little provocation on not-warm roads.
Racer
Joined: Oct 2017
Posts: 321
Likes: 6
From: Westchester County, NY
Sounds weird. I had a .2 GTS (rear drive coupe) and never experienced anything like this. I could get it to break loose if I really tried to gun it exiting a corner but even then it was a slight shift with all the traction control systems on.
Pro
Joined: Mar 2016
Posts: 662
Likes: 43
From: New England
Racer
Joined: Oct 2015
Posts: 381
Likes: 15
From: CT
Temperatures have been in the 40s to 50s in the past few weeks. I have the stock Pzeros and run about 35 psi warm in the rear. My S Has less torque than your stock GTS But I can break traction in second gear by flooring the throttle around 4000 RPM. Cold starts in the morning can get pretty exciting. Just turning left out of my driveway I can get sideways. My plan is to burn off enough tread to justify switching to Michelin MPS4s which were much better.
Three Wheelin'
Joined: Dec 2016
Posts: 1,881
Likes: 141
From: Toronto
Rennlist Stories
The Best Porsche Posts for Porsche Enthusiasts
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look
Verdad Gallardo
10 Porsche Colors That Have More Personality Than Most People
Verdad Gallardo
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod
Verdad Gallardo
10 Reasons I Hate Going to the Porsche Dealership (& the 1 Reason I Stay)
Joe Kucinski
Porsche Shakes Up The Nürburgring Lap Record Table Once Again
Verdad Gallardo
6 Ways the Porsche 911 GT3 S/C Redefines Performance
Joe Kucinski
10 Wildest Homologation Specials Porsche Ever Sold
Verdad Gallardo
Super Rare RUF BTR III Comes Out of Hibernation, Looking For a New Home
Verdad Gallardo
