That is incorrect. Here are the major tire manufacturer recommendations on run flat repair & post repair speed. Most of them are fine with it, and the ones who aren't are almost certainly stating so for liability rather than technical reasons.Never plug repair a runflat. Indeed, any high performance tire must be patch repaired or the speed rating is lost.
I'm not suggesting it isn't usable. Clearly even a totally flat runflat unrepaired is usable for the manufacturers stated runflat mileage. I don't doubt the tire would be safe. The problem is as I have described, unless you know how far the runflat has been driven while flat you cannot rely on its future remaining runflat capability. The biggest risk is to a subsequent purchaser not knowing the runflat has been repaired. However, I also challenge anyone to recall which of their four tires was repaired let alone recall how far it was run while flat.Michael, you're correct in that a plug repair should not be done on any tire. But if a competent tire dealer uses a patch plug repair applied from inside the tire, that tire is still usable. While the tire is dismounted the dealer would be able to see any internal damage which would then render the tire unusable. Although many owners use the external plugs and are perfectly fine in doing so, there is no way to ascertain if the tire is really safe. In any case, it would pay to closely monitor the TPMS.
Well, triple digit with two zeros, maybe. Put a few 1's or 2 's or more in the number and not on your life thanks v much.@Michael Smith , Say what you will about tire plugs, I've installed many hundreds, probably over a thousand, for loyal customers that I have serviced for 30 plus years that I continue to see. I can count on one hand (with fingers remaining) the number that have returned because the plug has failed to repair the leak. Usually removing the single plug and installing two plugs together will work! With modern TPMS it is now much easier to monitor pressure. To my knowledge, I have never had a plug depart the tire. I have seen bald tires, down to the cords, with the plug(s) still intact and not leaking. Would I recommend pluging a tire knowing that tire is going to be used at a track event or race, no. But for typical street use, no problem, is my experience. I routinely plug my own tires and drive triple digit speeds daily. Never a problem yet. Just my $0.02
The mid and rear engined cars do not require staggered wheels but at least they have a sound engineering reason for fitting them. No front engined car needs staggered wheels.Actually the 308 Ferraris had all four wheels and tires the same size...plus the spare was a full alloy wheel mounted with a matching tire. The Mondials as well.
Stating the facts is not doomsaying, conventionally defined. If you choose to repair a runflat tire then, in essence, you are driving a car with three runflat tires and one which no longer has that capability. At least you will know that if you read up on the facts. An innocent buyer of that used car will not know that.That' about what I would have expected. Too many doomsayers on here.
That is not correct. The majority of tire manufacturers allow run flat tire repairs after examination.If you choose to repair a runflat tire then, in essence, you are driving a car with three runflat tires and one which no longer has that capability. At least you will know that if you read up on the facts.