tire width

"David" <[email hidden]> wrote in message
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Quoted message said:

Help. I am trying to speed up my mountain bike, as I am attempting a
century ride. I currently have 1.75" tires from Michelin. I want
them slicker and thinner. I have visited 3 bike shops and received 3
different answers. How do I know if my current frame will support
1.25 tires?

If you're currently using 1.75" tires (about 37mm), you should easily fit
1.25" (about 32mm). Do it, you will notice a difference! I did when I put
Avocet 26x1.25 slick tires on my bike for street riding.

(David) said:

Help. I am trying to speed up my mountain bike, as I am attempting a
century ride. I currently have 1.75" tires from Michelin. I want
them slicker and thinner. I have visited 3 bike shops and received 3
different answers. How do I know if my current frame will support
1.25 tires?

The frame's not the issue. The wheels are. If they're too wide, a
1.25" tire will not be a good fit. While the chances are good that
1.25" tires will work with your existing wheels, the place to start is
by measuring the width of your rims.

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Brewster Fong said:

"David" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Help. I am trying to speed up my mountain bike, as I am attempting a
century ride. I currently have 1.75" tires from Michelin. I want
them slicker and thinner. I have visited 3 bike shops and received 3
different answers. How do I know if my current frame will support
1.25 tires?

If you're currently using 1.75" tires (about 37mm), you should easily fit
1.25" (about 32mm). Do it, you will notice a difference! I did when I put
Avocet 26x1.25 slick tires on my bike for street riding.

1.75" = 44mm (approximately)

If the OP's rims are over 19mm in width, a 1.25" tire will usually
still be mountable, but may be subject to pinch flats and other
problems. It is not uncommon for mtb rims to be much narrower than is
technically considered optimal for a given tire size, so it's very
possible that the 1.25" units will fit like a glove...but measuring
the rim width is the place to start.

--
Typoes are a feature, not a bug.
Some gardening required to reply via email.
Words processed in a facility that contains nuts.

"David" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Help. I am trying to speed up my mountain bike, as I am attempting a
century ride. I currently have 1.75" tires from Michelin. I want
them slicker and thinner. I have visited 3 bike shops and received 3
different answers. How do I know if my current frame will support
1.25 tires?

Thank you.

Here's a good place to find some information on tire and rim compatibility:
http://sheldonbrown.com/tire-sizing.html

Ride on,
Don