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rim width revisted... (20"/406 wheels)
Howdy folks.
Thinking of putting narrow tires on my 20" rims (406's - folding bike). They came with 1.95 knobby tires, I'm down to 1.50 slicks. I measured the rim width and it's 1 inch. I'd like to put Schwalbe Marathon slicks on which are 20x1.35's. Can I get away with this without worrying about them popping off? (or just popping) Thanks. Chris |
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#2
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rim width revisted... (20"/406 wheels)
C.J.Patten Wrote: Howdy folks. Thinking of putting narrow tires on my 20" rims (406's - foldin bike). They came with 1.95 knobby tires, I'm down to 1.50 slicks. I measured the rim width and it's 1 inch. I'd like to put Schwalb Marathon slicks on which are 20x1.35's. Can I get away with this without worrying about them popping off? (o just popping) Thanks. Chris What model rim? What is their inside width? What condition is the rim in? What pressure will you inflate the tire to -- daveornee |
#3
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rim width revisted... (20"/406 wheels)
"daveornee" wrote in message ... What model rim? I don't have a model number but it's an aluminum rim, 32-spoke, conventional brake, clincher and, as mentioned, a 20" wheel (406) for a folding bike. Here's a closeup of a small section: http://www.ncf.ca/~af895/bikes/rim.jpg ....and a larger section: http://www.ncf.ca/~af895/bikes/rim2.jpg What is their inside width? I measured outside width of the rims (braking surface to braking surface) and it's an inch. Presumably inside width is slightly less. If the inside measurement is needed to determine if the new tire will fit, I'll remove the tire and measure. What condition is the rim in? "As new." What pressure will you inflate the tire to? 60-100psi. (depending on tire) The Schwalbe Marathon slicks appear to be wire bead - which I'm told will be a bit better at staying in place than a kevlar bead. Thanks, Chris |
#4
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rim width revisted... (20"/406 wheels)
C.J.Patten Wrote: "daveornee" wrote in message ... What model rim? I don't have a model number but it's an aluminum rim, 32-spoke conventional brake, clincher and, as mentioned, a 20" wheel (406) for a foldin bike. Here's a closeup of a small section http://www.ncf.ca/~af895/bikes/rim.jpg ....and a larger section: http://www.ncf.ca/~af895/bikes/rim2.jpg What is their inside width? I measured outside width of the rims (braking surface to brakin surface) and it's an inch. Presumably inside width is slightly less. If th inside measurement is needed to determine if the new tire will fit, I'l remove the tire and measure. What condition is the rim in? "As new." What pressure will you inflate the tire to? 60-100psi. (depending on tire) The Schwalbe Marathon slicks appear to be wire bead - which I'm tol will be a bit better at staying in place than a kevlar bead. Thanks, Chris You should be fine with the Scwalbe 1.35" Take a look at the chart at URL: http://sheldonbrown.com/tire-sizing.html#width Note: The chart uses inside measurement -- daveornee |
#5
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rim width revisted... (20"/406 wheels)
C.J.Patten wrote:
Howdy folks. Thinking of putting narrow tires on my 20" rims (406's - folding bike). They came with 1.95 knobby tires, I'm down to 1.50 slicks. I measured the rim width and it's 1 inch. I'd like to put Schwalbe Marathon slicks on which are 20x1.35's. Can I get away with this without worrying about them popping off? (or just popping) Yes, provided they are hook bead rims (most are). The *optimum* tyre width is around 1.5 X rim width for the best round profile without too much rim stress or chafing. |
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