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Is the reason you can't plug these tires because you compromise the speed rating or the runflat ability? If I don't exceed 90, can't I plug it? $65 a tire for every flat is a bit much. Can you believe I got two flats at the same time? No volume discount. Anybody ever hear of a 1/4 inch drill bit going into a tire or should I just figure someone drilled the tire and the bit got stuck in there?
[QUOTE]Is the reason you can't plug these tires because you compromise the speed rating or the runflat ability? If I don't exceed 90, can't I plug it? /QUOTE]
To your first question, that is correct. As to your second question, I couldn't say.
I've been using plugged Goodyear runflats on my Camaro for about 18,000 miles, now. It's on the freeway, a lot; No track time, but I've had it up to 120mph for very short open freeway jaunts.
I think with any tire rating, it's a game of percentages. Something like, brand new tires will fail much less than 1% of the time, but plugged tires will fail 10% of the time. Numbers aren't real (pulled from my...) and just for illustration. I don't think it's possible to determine an accurate failure rate, as punctures damage the tire in infinite ways. The only definite statements are that plugged runflats aren't as good as new tires, and it's hard to quantify how deficient a plugged tire is.
I read something on the forum about punctures letting moisture in, which can ruin the steel belts in tires, but since I don't drive in wet weather often, I'm not very worried.