Join Date: Feb 2007
Location: Stratford, New Zealand
Bikes: 1990 Paul Dye Hand Built 7 Speed, 1965 Raleigh Sport, Folding 26" Tourer
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I disagree. I have had this exact same issue with Mr Tuffy Liners. The problem I had was that the liners rub on the inside of the tire, until they rub right through one of the layers of the tire belt material and the tyre starts to bulge. I had liners on 3 different bicycles, and they all showed the same symptoms. This was across 4 different brands of tyre - Kenda, some other no-name type, Vittoria Randoneur and Specialized Flak Jacket tyres. The Kenda, Vittoria and Specialized all developed bulges and failed. I fortunately had not done enough mileage on the 4th brand, but the wear was clearly showing. The Specialized brand tyres also showed accelerated wear. I normally get 6000k from a rear 700x38, but with the liners I went through 2 sets. The first developed a bulge at 2600k. I never fully examined it at the time, as there was no history of failure at that point, and I had no suspicions of any type. I merely blamed it on the tyre failing for some random reason. Also at that time I had only one bike with liners. The second wore almost completely by 2000k, making me suspicious, but not knowing what of. By the time the second tyre failure, (Kenda 700x25 - on a different bike) I examined the tyre closely, and found that the cause was in fact, the liner. By now I had liners on all 3 bikes, so was able to check all 3, finding the same symptoms in all, and 4 tyres of 6 needing changing. So now I don't have liners anymore, and am waiting to see how long the latest rear tyre will last. I'm only about 300k in so far, so it's too early to say. The only other thing to have changed with regard to my tyres is the purchase of a pump with a pressure guage, enabling myself to regularly kepp them at the pressure I like, 80 psi rear and 70 front. Prior to this they were often much lower. I have no idea if there is any problem with that, but we'll soon know for sure.
In addition to the problems with wear, in around 5000k I had at least 3 punctures which occured at the point where the two ends of the liner overlap (incidently the point where the tyre wear occurs), and no trace of anything having pierced the lining or tyre. I've read of other people having the same occur to them, and it seems to be caused by the liner itself pinching the tube.
All in all the best quality tyres lasted the longest, but still nowhere as long as they should. I wanted to try tyres with perhaps less inbuilt flat protection, and better ride quality, maybe even cheaper. However they would probably be lucky to last 1000k before catastrophicly failing. So, for myself, I do not recommend Mr Tuffy liners. A lot of people swear by them however. I wonder what they are doing different