Advertise on Bikeforums.net



User Tag List

Results 1 to 7 of 7
  1. #1
    Dirt Bomb sknhgy's Avatar
    Join Date
    Aug 2006
    Location
    Illinois
    Posts
    2,597
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)

    Do Mr. Tuffies wear out tires?

    A few months ago I put brand new KendaCross's and Mr. Tuffies on my MTB. I was on my daily 14 mile ride (5 miles of pavement and 9 miles of gravel) today when my rear tire developed a big bulge. After thumping my way home and removing the tire I found that the tire fibers in the area of the bulge on the inside of the tire had all been worn to a frazzle. The bulge was about 2" in diameter and directly over the area where the ends of the Tuffie overlaps. However, there was also a 1/16" diameter puncture in the middle of the bulge. The tire did not go flat.
    Upon inspection, I noticed that the front tire is also developing a bulge in a place where the tire has been punctured, but I haven't yet removed that tire to see if it's where the Tuffie overlaps. There is also one more tire puncture in the front, but that spot hasn't yet developed a bulge.
    It kind of looks like the Tuffies prevent flats, but in their place the tire fibers wear away and a bulge eventually developes.
    Anyone experienced anything like this?
    more cops have been killed by donuts than guns in chicago it is a medical fact ask any doctor.

  2. #2
    tsl
    tsl is offline
    Plays in traffic tsl's Avatar
    Join Date
    May 2006
    Location
    Rochester, NY
    My Bikes
    1996 Litespeed Classic, 2006 Trek Portland, 2013 Ribble Winter/Audax
    Posts
    6,573
    Mentioned
    13 Post(s)
    Tagged
    0 Thread(s)
    The problem is the Kenda tires. The bike I bought last year came with Kenda tires. The same thing happened to both my tires within a week of each other in under 90 days and around 800 miles. That was also *before* I started using Mr. Tuffys.

    Fortunately, my LBS replaced them under warranty, even let me switch brands in doing so. Since then, I've put 3,000 miles on that bike with the other tires and Mr. Tuffys. No problems at all.

    Your story reinforces the decision I made back then to never buy a Kenda tire.
    My two favorite things in life are libraries and bicycles. They both move people forward without wasting anything.
    The perfect day: Riding a bike to the library.—Peter Golkin


    Lucky for me, I work at a library and bike to work.

  3. #3
    Senior Member
    Join Date
    Feb 2007
    Location
    Stratford, New Zealand
    My Bikes
    2004 Mongoose Crossway 450, 198x Mitchells 7 Speed, 1990 Paul Dye Hand Built 7 Speed, 1965 Raleigh Sport
    Posts
    185
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    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

  4. #4
    Banned. Mr. Beanz's Avatar
    Join Date
    Dec 2005
    Location
    Upland Ca
    My Bikes
    Lemond Chambery/Cannondale R-900/Trek 8000 MTB/Burley Duet tandem
    Posts
    20,031
    Mentioned
    1 Post(s)
    Tagged
    1 Thread(s)
    I tried Mr Tuffys on my tandem. 700 x 25 Continentals. My results were reversed in direction. The strips were cutting into my tubes. I don't use lite tubes but still they cut through no matter what I did. I trimmed the edges, plaeced electrical tape. reversed overlap direction but results always the same, a slice in my tubes right a the ends' junction.

    I ditched them and found as long as I have good tires I don't flat much.

  5. #5
    Mad bike riding scientist cyccommute's Avatar
    Join Date
    Nov 2004
    Location
    Denver, CO
    My Bikes
    Some silver ones, a black one, a red one, an orange one and a couple of titanium ones
    Posts
    15,987
    Mentioned
    24 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Mr. Beanz View Post
    I tried Mr Tuffys on my tandem. 700 x 25 Continentals. My results were reversed in direction. The strips were cutting into my tubes. I don't use lite tubes but still they cut through no matter what I did. I trimmed the edges, plaeced electrical tape. reversed overlap direction but results always the same, a slice in my tubes right a the ends' junction.

    I ditched them and found as long as I have good tires I don't flat much.
    I've been using Tuffys for close to 20 years and I have occasionally had them wear through a tube but it's pretty rare. I don't trim or cut them but just overlap them. If they have a sharp edge, you can use a little sandpaper to feather them so that the transition is smoother.

    I haven't ever had them damage a tire however. I do...and lots of people say this is very silly...put talc (not corn starch but real talc - the mineral) in all my tires. I've noticed that without it, the tube and liner tend to weld to the tire. I don't notice movement of the tube in the tire but I've never had wear problems with the Tuffy on the tire either.
    Stuart Black
    Solo Without Pie. The search for pie in the Midwest.
    Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
    Days of Wineless Roads. Bed and Breakfasting along the KATY
    Twisting Down the Alley. Misadventures in tornado alley.
    An Good Ol' Fashion Appalachian Butt Whoopin'.

  6. #6
    Certifiable Bike "Expert"
    Join Date
    May 2005
    Posts
    5,632
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I had a Michelin Dynamic develop a similar bulge... tire liner appeared to have worn away the fibers.
    I don't even use the offensive term "Fred." -- Sheldon "All Cyclists Are My Friends" Brown (1944-2008)

  7. #7
    Dirt Bomb sknhgy's Avatar
    Join Date
    Aug 2006
    Location
    Illinois
    Posts
    2,597
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Thanks for the replys. I just checked the front tire. There are numerous places where the tire has been punctured and the threads are beginning to fray in those places. The worst place is just beginning to bulge. There was no bulge or fray at the overlap.
    It looks like the liners have saved me from having about a half dozen flats in the last few months. Problem is the tires appear to be failing due to being squished between the sharp gravel and the tire liners.

    Bottom line is I need new tires. I loved the low resistance the Kendas gave me. However, I would like something that would hold up to more than a few months of riding.

    I need a tire that gives low rolling resistance on pavement, but is durable enough to be taken on 20 mile rides on sharp gravel roads. I just ride. I don't do any crazy stuff so traction is not real important to me. It would be nice if I could still use the liners to give protection from sharp rocks, locust thorns, and sand burrs.
    Any suggestions? I've been looking at the Michelin Country Rock tires, but I don't know if they have low rolling resistance.
    Last edited by sknhgy; 10-18-07 at 09:16 PM.
    more cops have been killed by donuts than guns in chicago it is a medical fact ask any doctor.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •