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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHUnrepairable rear tire....
Leading reported evidence
Install tomorrow, same brand, same model
Performed · outcome unconfirmed
No successful repair reported for this finding.
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0
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1
Discussions
Read evidence and context
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Performed · outcome unconfirmed
I decided to bite the bullet and I'm having two new rear tires installed tomorrow, same brand, same model.
Leading evidence: 'Install tomorrow, same brand, same model' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install tomorrow, same brand, same model' (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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Performed · outcome unconfirmed
I just kept it as I replaced all 4 tires a couple of months later.
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Suggestion
I just would not be comfortable with a repaired tire.
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Suggestion
The guy there said it was illegal for them to repair the tire due to location of the puncture.
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Suggestion
In speaking with several Porsche mechanics and parts guys they all said that the "proper procedure " is replace per axle.
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22 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Planet-9: 1 discussions
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Generation: 20261026T103553Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
OK. Picked up a screw in the right rear tire, unfortunately on the tire shoulder, and it is in fact leaking. I know it's not repairable. I also know opinions on this are in a wide range but here it goes. The tires have 6,000 miles on them. The question and doubt I have is, should both rears be replaced or can only the damaged one be replaced. Car is driven on weekend lunch runs and errands during the week for about 4,000 miles a year. I'm on the path to replace both rear tires but full of doubt. Opinions welcome. Thanks.
Personally, I'd take the tread depth of the tire with 6k on it and see how much is gone. If not much, I don't see why it would be a problem to just replace the punctured tire.
Good question though, curious to see the responses.
I just went through this with my Cayman, I had someone sideswipe me , trashed a tire. Mine had 10,000 on them . I opted to replace both per Porsche recommendation ( its even in the manual ) . In speaking with several Porsche mechanics and parts guys they all said that the "proper procedure " is replace per axle. Now - that said - insurance was picking up the cost ( I had to send them the information that was in the manual)
Would I have done it if I was footing the bill - probably, but at 6000 miles - tough call unless they are 6+ years old and you plan to track car
Tire rack will shave a tire down to match the other. I know b/c the Subaru Asymetric all-wheel-drive is very picky about discrepancies.
Shawn in VA (USA)
Budman, I agree with ELCID, get a new tire and have it shaved to the diameter of the other existing 6k mile tire. Find a tire shop that does installs for The Tire Rack and have them send the outside tire rolling dimension to the rack.
Just to add another point of info, 265/35ZR-19 Michelin Pilot Sport 4S XL rear tires from Tire Rack are now $402 each. When I initially bought these tires 6,000 miles/20 months ago, they were $327 each. Obviously this is a painfully crazy rate of inflation. I'll likely migrate away from the Michelins in a few years when I'll need 4 new tires.
I look at it this way: Every issue resolution, preventative maintenance and oil service in my garage justifies the rubber of my choice available at the time of replacement.
Budman, have your tire company take a good look at the exact position of the screw in the shoulder. If they think a inner patch would stay in place, then use that method of repair. I've got 5k miles on a RE71R's rear tire face with a bolt hole. So far the tire patch is working fine without PSI leaks. I'm just waiting for Bridgestone to build the tire size that I need through the TireRack for their new model RE71RS.
Your tire install company could have another opinion. My bolt hole was about 1 in further towards the middle, but if you looked from the inside of the tire, all you see is the crisscross of webbing. I would rate this more of a tire face than side wall. I was facing the issue of 4 new tires as I had more miles on my tires before the patch install. Now, I'm glad I did the patch, as it give me time to get the tires I want. Maybe the TireRack can offer an opinion or better Michelin. Send them this picture to confirm any opinions.
I have somewhat limited capability in attempting to find someone who might be OK with patching my tire because the tire is leaking air by about 5-8 lbs. of pressure per day and I'm reluctant to drive it any more than absolutely necessary. I did have the Tire Rack approved installer I use check it to see if a patch was an option. They said no. Too close to the shoulder. Same issue with trying to determine whether buying one tire and having Tire Rack shave it. Having someone I feel actually capable of an accurate determination of how much to shave is something I'm just not comfortable with. Shave too much or too little, would I ever really know, and one has to wonder why they chose that option. Plus I guess I have a phycological issue with shaving a brand new tire. I decided to bite the bullet and I'm having two new rear tires installed tomorrow, same brand, same model. It's the option that won't leave me wondering if I made the right choice. Painful financially but, it's not the first time it's happened to me and I'll survive. I was also able to determine that Tire Rack includes a no charge, two year road hazard warranty (mine were 20 months old) so I anticipate them reimbursing me for one of the two tires. That was the clincher for me. Thanks for all the feed back. I do appreciate the info helping me determine my solution.
The same area happened to me a few years back. In Calif.. if it is less than 1 inch from the side wall it is illegal for them to patch or plug a tire due to state law. The guy at the tire store said. realistically, if I don't track the car, find a station that will do it and you should be OK. He was right, the tire lasted 2 years without issue until I got 4 new ones. BTW I don't track the car.
Several years ago, I was in BFE, SC when I picked up a nail in the same place as the OP. Only tire shop in 50 miles was a Walmart. The guy there said it was illegal for them to repair the tire due to location of the puncture. He then suggested I go inside and buy a “plug kit” and fix it in the parking lot.
I did that and it got me home 400 miles away. I just kept it as I replaced all 4 tires a couple of months later.
YMMV
I had a similar issue and my tire shop did an internal patch (not a plug) and held forever. Key was high quality tire shop. They do lots of race car tire work.
I know it's a lot of money but for what it's worth, I'd personally replace both tires and try to sell the used good one. I just would not be comfortable with a repaired tire.
I have have had very good experiences with Discount tire. The fixed flats for free and torqued to correct Porsche spec, all the tires, not just the one they fixed. They also carry tires that fit the Cayman. Might try them if they are nearby
Happy to say Tire Rack had my tires delivered to their certified installer that I chose within 2 days. Installed and road force balanced one day later. Then, since the tires came from Tire Rack with an included two year Road Hazard policy and my tires were only 20 months old, I filed a claim and received a check for one of the two new tires within a week. I'm a pretty happy camper all things considered. Worked out as best it could even though I had to pay for the second matching tire. If I'm not mistaken, Discount Tire recently acquired Tire Rack so they sound like another good choice.
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