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Tire question

Old 06-25-08, 07:22 AM
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Tire question

I'm 275 pounds and I usually carry around 25-30 pounds in my bags on a daily commute. My Jamis Aurora came with Vittoria Randonneur 32mm tires. Within 150 miles my sidewall blew out just above the bead. My LBS recommended going to Kenda Kwest 35mm. I switched to those tires and I haven't had any problems just yet, except, my rear tire really bulges when I ride; which scares me a little. I really like a tire that I'm sure is going to hold up on a tour. Any suggestions on a good tire? Are there tires with a stiffer sidewall? The Randonneurs might have just been a bad defect in that make. Should I give them another try?
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Old 06-25-08, 09:00 AM
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You need a much wider tire - probably the widest that will fit your bike. The limiting factor on most bikes is the space where the chain stay meets the seat tube. You also need to maintain the maximum air pressure.

Good info here on width versus weight bearing - XR's rock:

https://schwalbetires.com/node/1320
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Old 06-25-08, 09:18 AM
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By blew out, do you mean it pulled away from the rim letting the tube come out or that sidewall material ripped?

In the first case it could have been poorly seated in the rim or a slight miss match of rim and bead diameters. In the second it could have been cut or pinched and thus weakened.

Staying at the high end of the recommended pressure range will help, don't need to go over that limit. Get a decent pressure gauge or floor pump with a gauge and check a couple of times a week

Schwalbe has an excellent reputation, but so does Vittoria. Might want to get the widest tire that works with your rims. I think (check with bikeshop) that your rims will take up to 37mm (https://sheldonbrown.com/tire-sizing.html) The larger air volume with smooth out the ride.
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Old 06-25-08, 09:22 AM
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Originally Posted by jdcii
I'm 275 pounds and I usually carry around 25-30 pounds in my bags on a daily commute. My Jamis Aurora came with Vittoria Randonneur 32mm tires. Within 150 miles my sidewall blew out just above the bead. My LBS recommended going to Kenda Kwest 35mm. I switched to those tires and I haven't had any problems just yet, except, my rear tire really bulges when I ride; which scares me a little. I really like a tire that I'm sure is going to hold up on a tour. Any suggestions on a good tire? Are there tires with a stiffer sidewall? The Randonneurs might have just been a bad defect in that make. Should I give them another try?
Are you sure you are running enough pressure? I am guessing maybe not based on the bulging sidewall comment. With 300 pounds of load (not including the bike), you probably need to run a pretty high pressure, maybe more than the rated pressure.
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Old 06-25-08, 09:46 AM
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Originally Posted by reiffert
By blew out, do you mean it pulled away from the rim letting the tube come out or that sidewall material ripped?

.
The side wall ripped out. About 4 inches just above the bead.
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Old 06-25-08, 10:56 AM
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Weird, assuming it wasn't a brakepad rubbing, I'd go for it either being defective or damaged from too low a tire pressure.

I'd go with checking tire pressure accurately first, keeping it at the max printed on the tire, to make sure the same thing doesn't happen to the new tire.
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Old 06-25-08, 01:23 PM
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I am a bit heavier than you and have been using the Kenda Kwest High Pressure version with no problems. Then again, they are 20x1.50 on my Bike Friday, so its a bit of apples and oranges I do always keep them close to max pressure (100psi), otherwise things get sloppy when turning.
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Old 06-26-08, 12:19 AM
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I would just like to say I have always had problems with Kenda tire side-walls, & everyone I knew that had them also had problems, I don't knew if its just me or just the model I had, but I don't like them.
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Old 06-26-08, 12:26 AM
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I used Schwalbe Racers last year, and they really impressed me
with how tough they are. The definitely have a beefy sidewall. It's why I switched them. I am running Paselas now, they have a thinner sidewall and a much sweeter ride.

Ahh, this isn't the Clyde Forum. I am a fellow Clydesdale and weigh pretty much what you do.

If you want the best, try Schwalbe Supremes.
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