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Post by oldroadietehachapi on Jan 30, 2023 5:47:59 GMT
I have a brand new (admittedly on the shelf for two years) fairly expensive set of Mavic K10 tires that suffered tread separation (where tread would be if they weren't slicks) in the first 100 miles. If someone was to show them to me I would say they were overinflated, but the were not. They have a 110 psi maximum pressure and they were carefully inflated to 100 psi (checked with two gauges). They look to me as if they maybe are separating along a belt (if the tires even have one). The separations seem to be expanding along two straight lines and might (if left long enough) completely surround the tire. Sadly, I have a couple more on the shelf and will not use them. The pictures tell the story.
Cheers Jim
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Post by brianbutler on Jan 30, 2023 12:48:33 GMT
That has to be a manufacturing defect, something wrong with the rubber compound. Either that or your arid conditions, and maybe heat, are to blame. Maybe you need a Park Tool BTH-1, that's the Bicycle Tire Humidor.
Brian
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Post by oldroadietehachapi on Jan 30, 2023 15:49:29 GMT
That has to be a manufacturing defect, something wrong with the rubber compound. Either that or your arid conditions, and maybe heat, are to blame. Maybe you need a Park Tool BTH-1, that's the Bicycle Tire Humidor. Brian I agree on the tires being defective; surprising since Mavic K10 tires were made by Hutchinson. Drying out is a good theory as it seems that the rubber cannot expand with the casing. What is odd is that I have not had a problem with my other bike tires. I can't seem to find a reference to a Park BTH-1? The casing seems undamaged so I may ride them a bit more (no screaming descents) and see what happens. I have a second set so my investment in these tires is over $200; such a waste. Most of my better bikes are fitted with Continental Grand Prix Classics with which I am very pleased. Also, many of my bikes are fitted with Michelin Dynamic Classics; not as fast, but dependable, and only 20 bucks or so.
Cheers Jim
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Post by brianbutler on Jan 30, 2023 19:11:31 GMT
That has to be a manufacturing defect, something wrong with the rubber compound. Either that or your arid conditions, and maybe heat, are to blame. Maybe you need a Park Tool BTH-1, that's the Bicycle Tire Humidor. Brian I agree on the tires being defective; surprising since Mavic K10 tires were made by Hutchinson. Drying out is a good theory as it seems that the rubber cannot expand with the casing. What is odd is that I have not had a problem with my other bike tires. I can't seem to find a reference to a Park BTH-1? The casing seems undamaged so I may ride them a bit more (no screaming descents) and see what happens. I have a second set so my investment in these tires is over $200; such a waste. Most of my better bikes are fitted with Continental Grand Prix Classics with which I am very pleased. Also, many of my bikes are fitted with Michelin Dynamic Classics; not as fast, but dependable, and only 20 bucks or so.
Cheers Jim
It gets harder to find good 27" tires. Fortunately they still make 27" Panaracer Pasela's in several widths and sidewall styles, which I have used for 45 years. They are usually about $28 each. The newer version, Panaracer Pasela Pro-tite has a blue label instead of yellow and costs more but in my experience does not resist flats any better, roll faster, or wear longer. But if you like blue, it's the way to go.
Brian
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Post by wheelson on Jan 30, 2023 21:57:04 GMT
I like the Continental Grand Prix Classic in 700c, one pair for my Austro Daimler Vent Noir ll. For 27’s I use Pasela’s in 1/4 and 1/8 inch widths. I tend to interchange wheelsets between bikes whenever possible or build multiple sets for the same bike.
Best,
John “wheelson”
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Post by brianbutler on Jan 30, 2023 22:03:44 GMT
I like the Continental Grand Prix Classic in 700c, one pair for my Austro Daimler Vent Noir ll. For 27’s I use Pasela’s in 1/4 and 1/8 inch widths. I tend to interchange wheelsets between bikes whenever possible or build multiple sets for the same bike. Best, John “wheelson” I like your idea of interchangeable wheelsets. I could reduce my wheel and tire inventory and it would be a big help in bike storage to just hang them up without wheels.
Brian
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Post by wheelson on Jan 31, 2023 2:47:52 GMT
Interchanging wheelsets is entirely doable. Case 1 is the AD, 700c and 650b wheels that swap with minimal brake shoe adjustment. Result is a road or gravel bike. The 650b wheels fit at least two other bikes. Case 2 is the Nashbar T6000 and the Cannondale H600. Swap-able wheelsets, one 700c x 40’s comfy lower air pressure while the other has 700c heavy duty wheels with airless 40’s. I also have extra road wheels that fit both. Case 3 will be the Viscounts, one set of “normal” 27’s, one set of sewups, one set of 700c’s.
The secret is matching up gearing and rear wheeling spacing. Otherwise, it’s not that bad. The Nashbar and the Cannondale are both 8 x 3 drivetrains, one with bar ends, the other has STI brifters. Wider tires and lower gears seem to be my direction these days, making all this stuff work is loads of fun.
Best,
John “wheelson”
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Post by brianbutler on May 26, 2023 14:07:05 GMT
I agree on the tires being defective; surprising since Mavic K10 tires were made by Hutchinson. Drying out is a good theory as it seems that the rubber cannot expand with the casing. What is odd is that I have not had a problem with my other bike tires. I can't seem to find a reference to a Park BTH-1? The casing seems undamaged so I may ride them a bit more (no screaming descents) and see what happens. I have a second set so my investment in these tires is over $200; such a waste. Most of my better bikes are fitted with Continental Grand Prix Classics with which I am very pleased. Also, many of my bikes are fitted with Michelin Dynamic Classics; not as fast, but dependable, and only 20 bucks or so.
Cheers Jim
It gets harder to find good 27" tires. Fortunately they still make 27" Panaracer Pasela's in several widths and sidewall styles, which I have used for 45 years. They are usually about $28 each. The newer version, Panaracer Pasela Pro-tite has a blue label instead of yellow and costs more but in my experience does not resist flats any better, roll faster, or wear longer. But if you like blue, it's the way to go.
Brian
Quoting myself here to keep this thread together. I now believe the Panaracer Pasela Pro-tite's are better than the regular Panaracer Paselas. I have been swapping tires around for a few days and when I checked my records I found that I have a set of Pro-tites with over 3200 miles and still plenty of tread. This also implies that they have not suffered a catastrophic flat that cut the casing. Another set has about 1900 miles and as you would expect is in even better shape.
Brian
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