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Discussion summary
YOUR RESEARCHBurnin' Rubber, literally?
Leading reported evidence
Install p-zero rosso's
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I recently installed P-Zero Rosso's on my C4S and occasionally can smell very hot, almost burning rubber.
Leading evidence: 'Install p-zero rosso's' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check tire temperature' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
Ever checked your tire temperature after a good run?
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I recently installed P-Zero Rosso's on my C4S and occasionally can smell very hot, almost burning rubber. Like when the tire has been rubbing against something. The tires don't rub anywhere and it's mostly from the back, but there is a light smell up front as well. Am I tripping, or are these things getting that hot? Today at a stoplight on an exit ramp I could smell it come in the window from outside, but other times if I lean down to the tire I can smell it when parked.
It's called "Porsche Perfume" - most likely not due to alignment. It's because the exhaust manifolds and mufflers are directly behind the rear wheels and all those tiny/micro pieces of rubber settle on them and give you that nice burning smell...
I was concerned about this the first few times I drove my car but the friendly folks here assured me (aside from any underlying issues) that's just the way it's meant to be. I've since grown to enjoy it.
The rubber burning smell is very much expected after some hot driving, but every time i have smelled that smell after a peaceful commute, I found one of the rear tires at half pressure with a nail stuck in it.
I think the Porsche tires are designed exactly for the front tires to throw a sharp metal object directly at an exact angle to penetrate the rear tire. In my 40+ years in the Automotive bussiness I have seen more rear tire punctures on Porsche's than any other brand/model.. Tire pressure sensors have saved a many of tire on 997 up cars.
Drive hard, park car in garage. Go back to the garage in 10 minutes. Okay...rubber smell okay. Tires heat up a lot sitting next to the exhaust and having been on the roadway heating up. Ever checked your tire temperature after a good run? You can't even put your hand on them. If tinge in the air...oh uh...oil drip. If it smells sweet...coolant.
Only on the track.
But I did this little experiment in the dead of winter. Heated garage was at 55 degree F. Took the car for a drive in 10F weather. Tire pressures before and after were unchanged. Im guessing the 45F delta was offset by friction of driving on them.
Well, I live in Florida with lots of sun and 90+ degree days. I would guess that the asphalt roads are probably 115 to 125 soaking in the sun. Maybe more. But if we add in your delta, then that would be close to 170. That's pretty warm.
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