JSM Posted June 8, 2011 Share Posted June 8, 2011 (edited) So last week I'm riding home and on a moderate turn I hear this noise like there is a nail or the tire itself had some sort of cupping going on. Sounded like it was coming from the front. I pull over and roll the entire front tire and don't find a thing. Today I'm at lunch and walk up to the back of the bike and there is this huge bulge on the side wall and bottom tread of the tire. I touched it and it felt like a big blister on your hand. I about fainted. I rode up to 80 mph that morning on the Freeway. Is this normal for motorcycle tires? I'm assuming that it must be due to age. Tread is still very decent. The bike is an 05 w/ only 6500 miles when I got her. Dunlop tire. Pic doesn't do the bulge justice. Needless to say I rode the entire trip home at 30mph. Edited June 8, 2011 by JSM Quote Link to comment Share on other sites More sharing options...
emeraldlion Posted June 8, 2011 Share Posted June 8, 2011 It does and can happen. My dad works for cooper tire and rubber and has seen this a couple of times. There are any number of factors that can cause sepeartion and bulging between different layers. I know he has mentioned curing a couple of times. Maybe we have some tire builders that could speak to it. Obviously running a tire faster than it is rated cause cause seperation but I doubt that would be the case with a performance bike tire. Quote Link to comment Share on other sites More sharing options...
Moltar Posted June 8, 2011 Share Posted June 8, 2011 It does and can happen. My dad works for cooper tire and rubber and has seen this a couple of times. There are any number of factors that can cause sepeartion and bulging between different layers. I know he has mentioned curing a couple of times. Maybe we have some tire builders that could speak to it. Obviously running a tire faster than it is rated cause cause seperation but I doubt that would be the case with a performance bike tire. Cooper had a recall for their truck tires recently. I had 2 out of my 4 tires separate with 10K worth of tread left on them. Couldn't refund them either - tires came with the truck (with no receipts for anything). Needless to say I won't be buying Coopers anytime soon. I would highly recommend buying new tires for your bike as tread separation is very dangerous because of the increased risk of a blow out. Quote Link to comment Share on other sites More sharing options...
jasper Posted June 8, 2011 Share Posted June 8, 2011 Looks like a shifted belt. Never seen it on a bike though. I see it on car tires every once and a while. Yeah....you're lucky Quote Link to comment Share on other sites More sharing options...
aarang Posted June 8, 2011 Share Posted June 8, 2011 My wife had a 2005 Ninja 250 that we bought brand new. Two years later the rear tire did the same thing. The dealer put a new one on for free....after that I put new tires on my SV650 as they were getting old. Quote Link to comment Share on other sites More sharing options...
johnc Posted June 8, 2011 Share Posted June 8, 2011 With all the ozone in the air, you can't expect a tire to last more then 7 years from the date of manufacture. RV, trailer, and motorcycle tires fail typically via tread separation long before they wear out the tread. Quote Link to comment Share on other sites More sharing options...
emeraldlion Posted June 8, 2011 Share Posted June 8, 2011 (edited) Don't buy cooper's. Please go buy some firestones. Show me a mass production company that doesn't have recalls when they are making millions of units a year. At least the recalled. How do you know your tire specifically was effected by the recall. How do you know the seperation wasn't due to something the previous owner did? I think you're a little premature by being so negative towards cooper tires just because they had a recall on some tires. P.S. I will not deny my obvious bias, but my family has obviously put nothing but coopers on all our cars, run them into the ground and never had a tire problem. Edited June 8, 2011 by emeraldlion Quote Link to comment Share on other sites More sharing options...
JSM Posted June 8, 2011 Author Share Posted June 8, 2011 (edited) I went with a Metzeler Lasertec. Edited June 8, 2011 by JSM Quote Link to comment Share on other sites More sharing options...
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