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Been lurking for a few months here. Went in to buy a Macan, tried CPO 991s, took home a white 992. Hell ya!
Car is 2k miles. Rear right tire is experiencing a slow leak, ~1 PSI per day.
All started when I was alerted -5 PSI, tire was at 35 PSI.
Pumped it to 45 PSI, tightened the cap with less ferocity. She drove fine the next 24-36 hours.
2 days later, the tire is at 42/43 PSI (0.5-1 PSI leak per day).
Curious if anyone could lend some experience, I've done a few searches but can't seem to find best answer.
Should I take to dealer or independent shop for this? Indy seems more cost effective. Will it effect warranty?
Any help would be greatly appreciated!
Thanks
CP
Last edited by Chairman Pang; 03-04-2021 at 01:53 AM.
Having someone check for a leak will NOT affect the warranty on the car. I WOULD suggest that you have it checked promptly. The picture below is of a tire from a fellow Renlisters Porsche that had a "slow" leak.
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Yeah, get that checked out. You’ve got a leak — likely a nail or foreign object. Indy shop or tire place is fine. If it isn’t near the sidewall, it should be patch-able.
Having someone check for a leak will NOT affect the warranty on the car. I WOULD suggest that you have it checked promptly. The picture below is of a tire from a fellow Renlisters Porsche that had a "slow" leak.
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This is also a reminder to never pull something out that is stuck in your unless you have a plan to fix it. 🤣
A slightly bent rim can also cause a slow leak, but most likely a puncture. If you are a Discount Tire customer, they will check and patch your tire for free.
Yep, it's no coincidence either. The right side of the car is more likely to encounter debris near the shoulder. Then, the front tire picks up and lifts the nail, screw, drill bit, etc so that it can best penetrate the rear tire.
I was told by my dealer that Porsche strongly advises against patching a compromised tire. This is probably out of concern for those who track their cars or drive over 100 mph on the autobahn. I'm guessing that for normal street driving, a competently patched tire would be safe (unless, of course, the puncture is in the sidewall). Still, my dealer refuses to patch tires, probably out of a liability concern.
I was told by my dealer that Porsche strongly advises against patching a compromised tire. This is probably out of concern for those who track their cars or drive over 100 mph on the autobahn. I'm guessing that for normal street driving, a competently patched tire would be safe (unless, of course, the puncture is in the sidewall). Still, my dealer refuses to patch tires, probably out of a liability concern.
When a tire is properly patched, the rule of thumb is that you lose one speed rating. For the speeds that you see on US public roads, this is a non-issue for our cars.
Most tire road hazard coverage provides repair (patch) and replacement only in circumstances where the tire can’t be patched, eg. the sidewall. There’s nothing wrong with a patch.
Of course, many dealers will happily sell you a new tire instead of a patch. It rarely makes any sense to buy tires from a car dealer. Very few dealers price tires competitively with the real world. If yours does, you got lucky.
NHTSA and all of the tire manufacturers that I am aware of approve what is called a Compound Patch. Of note; it is the ONLY patch method that any of them or NHTSA approves of.
03-04-2021 | 01:51 AM
Slow tire leak
