Traction Expectations
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From: South Carolina
Traction Expectations
Hey, Im a new 911 owner (love it) and curious if what I am experiencing with my GTS is normal. Ive owned M cars, Boxster S and Macan Turbo. My 2019 has Pirelli tires and the rears break loose so easily. Aggressive passing on highway, rear loses traction. Give it more than half throttle in 1st or 2nd and the rear loses traction and kicks out. Im aware of rear weight bias and oversteer , but Ive read plenty of posts about the awesome traction in 991s. Is this simply the Pirellis operating in 50-60 degree weather? It reminds me of Corvettes I driven, a little aggressive throttle and the rear swings out. Its seriously so easy to break loose the rear tires I straight line driving that I have to drive cautiously. I suspect the Pirellis hate weather below 70 degrees. Is this normal or the tires? Ive tried different tire pressures. Now using Comfort pressures. I plan to install winters for colder weather soon.
Last edited by TTFLT6; Oct 24, 2018 at 09:46 PM. Reason: Typo
Burning Brakes
Joined: Jan 2011
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From: Near Charlotte NC
Does it go away after the tires reach hot pressure i.e. warm up? I can see this maybe happening below 40 degrees with cold tires. Is the 911 parked outside where the tires are in cold weather at night?
This just seems odd. I gather you have over 300 miles on them right?
This just seems odd. I gather you have over 300 miles on them right?
Thread Starter
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Joined: Apr 2018
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From: South Carolina
Does it go away after the tires reach hot pressure i.e. warm up? I can see this maybe happening below 40 degrees with cold tires. Is the 911 parked outside where the tires are in cold weather at night?
This just seems odd. I gather you have over 300 miles on them right?
This just seems odd. I gather you have over 300 miles on them right?
Burning Brakes
Joined: Jan 2011
Posts: 965
Likes: 89
From: Near Charlotte NC
Is traction control in drift mode by accident? This can be done by holding the button just briefly and it will indicate such. I would show your dealer, this isn't right if temps are above 50 with warm tires on a dry day.
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From: South Carolina
this would make sense except no lights indicating a different traction control mode. And wouldnt it revert to normal after shutting off the car? I just assumes the summer Pirellis are lousy in mild weather.
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From: Marineland FL
It appears you missed my earlier post: Which GTS model do you have? Rear wheel drive only Coupe by chance?
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From: Marineland FL
Thanks, and as you know you have the only GTS model without all wheel drive so that can be a contributing factor; however, what you are describing does not sound right, unless you have very heavy shoes.
Burning Brakes
Joined: Jan 2015
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From: El Dorado Hills, CA
What tire pressures are you running. My 991.2 C2s came from the dealer with the full load tire pressures up in the 40 psi range. Way too high! But have not had any issues like you describe. Sounds like the traction control is off or not working.
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From: Gone. On the Open Road
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.
Thread Starter
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Joined: Apr 2018
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From: South Carolina
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.
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From: SW Florida
Don't know where you are located but cold weather is not a friend of the OEM summer tires particularly the Pzeros. Rubber gets hard and tires get slick.
What tire pressures are you running? That may really be your issue. For examples I am running 245 f & 305 r. My cold settings are 31 f x 34 r. If you are running full load or dealer set pressures that may be the issue combined with colder weather. There is no reason if all is set properly for you to not feel you are glued to the pavement.
What tire pressures are you running? That may really be your issue. For examples I am running 245 f & 305 r. My cold settings are 31 f x 34 r. If you are running full load or dealer set pressures that may be the issue combined with colder weather. There is no reason if all is set properly for you to not feel you are glued to the pavement.
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From: Gone. On the Open Road
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.