Repairing or replacing tyre with slow puncture
Discussion
OK, so I know that repairing a tyre with a sidewall puncture is generally a no-no as this part of the tyre is load bearing, but what about punctures in the tyre's tread?
Background to this is that I replaced my Bridgestone 305/30ZR19 rears a couple of months ago on my Turbo and one now has a slow puncture (loses around 3psi/day).
I'm sure if I got to my OPC they will say "replace tyre, it's a high performance car" - and I will if it really is necessary, but is it...?
Background to this is that I replaced my Bridgestone 305/30ZR19 rears a couple of months ago on my Turbo and one now has a slow puncture (loses around 3psi/day).
I'm sure if I got to my OPC they will say "replace tyre, it's a high performance car" - and I will if it really is necessary, but is it...?
I had my eyewateringly expensive RFT repaired on my GTR last year. No problems 5k miles later - if anything it holds the pressure slighlty better than the others for some reason
It cost me 40gbp to do in Denmark (I was over there on holiday). Nearest replacement I found was Nissan Hamburg for 650 euros.....
It cost me 40gbp to do in Denmark (I was over there on holiday). Nearest replacement I found was Nissan Hamburg for 650 euros.....
I've had exatly the same situation, TWICE, quite reently.
New Michelins all round, within 1000 miles, TPC indicates r/h/r puncture. Take it to OPC and they say that, although repairable, they don't do repairs. So, I buy new tyre, but ask to keep the used one.
This I took to my local tyre specialist and they offered a local repair (all excellent to BS standards) or send it to Michelin for a certified repair. I elected to go for the latter and it came back a week later looking like new on the outside with a stamped seal on the inside (and cost IIRC £28).
Decided to keep it in case I had another puncture and, last week TPC indicates l/h/r losing air - about 0.1 bar every 10 mins - so rapid loss. Solved that a tyre sealant, but I'll get the tyre swapped and have another certified repair.
I guess I must have had a dozen punctures on Porsches over the last 25 years, and always had them repaired with no problems whatsoever. Interestingly - all rears.
New Michelins all round, within 1000 miles, TPC indicates r/h/r puncture. Take it to OPC and they say that, although repairable, they don't do repairs. So, I buy new tyre, but ask to keep the used one.
This I took to my local tyre specialist and they offered a local repair (all excellent to BS standards) or send it to Michelin for a certified repair. I elected to go for the latter and it came back a week later looking like new on the outside with a stamped seal on the inside (and cost IIRC £28).
Decided to keep it in case I had another puncture and, last week TPC indicates l/h/r losing air - about 0.1 bar every 10 mins - so rapid loss. Solved that a tyre sealant, but I'll get the tyre swapped and have another certified repair.
I guess I must have had a dozen punctures on Porsches over the last 25 years, and always had them repaired with no problems whatsoever. Interestingly - all rears.
Had this on mine. Although I did have it repaired, it didn't sit right with me driving a 200mph car with a repair, so replaced the lot to keep them even. Sold the old ones on ebay to recoup a few quid. Must say this is a little drastic. But wanted to change brand anyway so saw it as a chance. In theory, a repair should be fine. I did not know about the approved repair service as mentioned above. If this is available for £28 - no brainer!
Every time I have had what appeared to be a slow puncture, the problem lay with the valve or corrosion of the alloy around the valve. If a puncture is found in the tread of the tyre a repair is perfectly OK for me. I have not seen one fail. The plug is put in from the inside, so the tyre pressure holds it in place in addition the adhesive.
Isn't it a No-No to repair a tyre after tyre sealant has been used? That's my main gripe about the lack of a spare. If you have a puncture and you use the emergency tyre sealant, you are looking at a new tyre, even if it was otherwise repairable. Perhaps it's better to get Porsche Assistance or other breakdown provider to uplift the car to somewhere, where you can get the tyre repaired.
Isn't it a No-No to repair a tyre after tyre sealant has been used? That's my main gripe about the lack of a spare. If you have a puncture and you use the emergency tyre sealant, you are looking at a new tyre, even if it was otherwise repairable. Perhaps it's better to get Porsche Assistance or other breakdown provider to uplift the car to somewhere, where you can get the tyre repaired.
There does seem to be a product which will seal your punctured tyre without destroying it, so you can get it repaired later.
http://www.honestjohn.co.uk/news/parts-and-accesso...
http://www.honestjohn.co.uk/news/parts-and-accesso...
GrahamClarke said:
OK, so I know that repairing a tyre with a sidewall puncture is generally a no-no as this part of the tyre is load bearing, but what about punctures in the tyre's tread?
Background to this is that I replaced my Bridgestone 305/30ZR19 rears a couple of months ago on my Turbo and one now has a slow puncture (loses around 3psi/day).
I'm sure if I got to my OPC they will say "replace tyre, it's a high performance car" - and I will if it really is necessary, but is it...?
Try to find out what the tire maker has to say about repairs.Background to this is that I replaced my Bridgestone 305/30ZR19 rears a couple of months ago on my Turbo and one now has a slow puncture (loses around 3psi/day).
I'm sure if I got to my OPC they will say "replace tyre, it's a high performance car" - and I will if it really is necessary, but is it...?
Generally if the tire maker allows it the guidelines are the puncture has to be in the tread face and even then in a ways so the nail or screw or whatever doesn't scrape/damage the sidewall on the inside. (I had a puncture in one tire that did this and the tire was ruined.)
The hole should be less than 1/4" in diameter and the tire otherwise serviceable. Good luck getting a tire worn down to the wear bars fixed.
Often what happens is the tire is driven under inflated and this damages the tire, damages the inside surface of the tire that keeps the air in. When a tire is removed from the wheel for a repair and some rubber dust comes out the tire is shot.
Most Porsche dealers, read all that I have tried, will no longer repair tires. I have a indy tire shop nearby that has repaired a tire or two for me but tire shops that will repair "high performance tires" are getting fewer and fewer every day.
But the last few sets of tires have come with road hazard coverage -- cost $7/tire -- and as long as the tire has 3mm or more of tread left the tire is replaced at no charge to me. Now a problem is if the new tire's diameter is 30% larger than the other (used) tire the other side must be replaced as well.
I replaced the tires on my Turbo last July. Just a few weeks ago the right rear picked up a nail. The tire was replaced but the left tire tread depth was down to 5mm and the tire diameter difference was too much so I had to pay to replace the otherwise perfectly good left hand tire. $500.
There are do it yourself tire repair kits. I have one in each car but have never used either since the tires have come with road hazard coverage. Now I just replace the bad tire or both if necessary.
Rockster said:
Try to find out what the tire maker has to say about repairs.
Generally if the tire maker allows it the guidelines are the puncture has to be in the tread face and even then in a ways so the nail or screw or whatever doesn't scrape/damage the sidewall on the inside. (I had a puncture in one tire that did this and the tire was ruined.)
The hole should be less than 1/4" in diameter and the tire otherwise serviceable. Good luck getting a tire worn down to the wear bars fixed.
Often what happens is the tire is driven under inflated and this damages the tire, damages the inside surface of the tire that keeps the air in. When a tire is removed from the wheel for a repair and some rubber dust comes out the tire is shot.
Most Porsche dealers, read all that I have tried, will no longer repair tires. I have a indy tire shop nearby that has repaired a tire or two for me but tire shops that will repair "high performance tires" are getting fewer and fewer every day.
But the last few sets of tires have come with road hazard coverage -- cost $7/tire -- and as long as the tire has 3mm or more of tread left the tire is replaced at no charge to me. Now a problem is if the new tire's diameter is 30% larger than the other (used) tire the other side must be replaced as well.
I replaced the tires on my Turbo last July. Just a few weeks ago the right rear picked up a nail. The tire was replaced but the left tire tread depth was down to 5mm and the tire diameter difference was too much so I had to pay to replace the otherwise perfectly good left hand tire. $500.
There are do it yourself tire repair kits. I have one in each car but have never used either since the tires have come with road hazard coverage. Now I just replace the bad tire or both if necessary.
Thanks for the response, this is useful. Generally if the tire maker allows it the guidelines are the puncture has to be in the tread face and even then in a ways so the nail or screw or whatever doesn't scrape/damage the sidewall on the inside. (I had a puncture in one tire that did this and the tire was ruined.)
The hole should be less than 1/4" in diameter and the tire otherwise serviceable. Good luck getting a tire worn down to the wear bars fixed.
Often what happens is the tire is driven under inflated and this damages the tire, damages the inside surface of the tire that keeps the air in. When a tire is removed from the wheel for a repair and some rubber dust comes out the tire is shot.
Most Porsche dealers, read all that I have tried, will no longer repair tires. I have a indy tire shop nearby that has repaired a tire or two for me but tire shops that will repair "high performance tires" are getting fewer and fewer every day.
But the last few sets of tires have come with road hazard coverage -- cost $7/tire -- and as long as the tire has 3mm or more of tread left the tire is replaced at no charge to me. Now a problem is if the new tire's diameter is 30% larger than the other (used) tire the other side must be replaced as well.
I replaced the tires on my Turbo last July. Just a few weeks ago the right rear picked up a nail. The tire was replaced but the left tire tread depth was down to 5mm and the tire diameter difference was too much so I had to pay to replace the otherwise perfectly good left hand tire. $500.
There are do it yourself tire repair kits. I have one in each car but have never used either since the tires have come with road hazard coverage. Now I just replace the bad tire or both if necessary.
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