max tire width for bontrager select disc wheels, 700c
01-02-12, 06:57 PM
#1
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max tire width for bontrager select disc wheels, 700c
I have Bongtrager Select Disc wheels for 700c tires made in about 2007 or 08. They have an outside rim width of about 19 mm (18.75 mm as measured by calipers) and an inside rim width of 13.3 mm. I have forks that can take 38 mm tires, but I'm not sure if the rims would allow that width of tire. I can't find any info from Bontrager's site. Any suggestions? What is the max width tire I can put on the wheels?
01-02-12, 07:01 PM
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this is slightly conservative.
https://www.schwalbetires.com/tech_in...dimensions#rim
using really fat tires on narrow rims causes a lot of tire roll when turning, which adversely affects handling.
https://www.schwalbetires.com/tech_in...dimensions#rim
using really fat tires on narrow rims causes a lot of tire roll when turning, which adversely affects handling.
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01-02-12, 07:03 PM
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Within reason there's lot's of latitude in tire/rim width ratios, especially to the wider side, though the Schwalbe chart is a good starting place.
However before shopping tires, check your chainstay width and fork/front brake height clearance. Usually these and not the rim are the limiting considerations.
However before shopping tires, check your chainstay width and fork/front brake height clearance. Usually these and not the rim are the limiting considerations.
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01-03-12, 11:29 AM
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The rule of thumb I've heard is that the tire should be 1.45 to 2 times the inner rim width. So 20-25mm if you want to be conservative, but you could probably get away with using 28s or 30s. 
01-03-12, 06:00 PM
#6
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Going too wide will cause handling problems, but too narrow is probably weirder. Too narrow rarely happens though.
01-11-12, 06:34 PM
#7
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thanks all for the advice, there are a lot of opinions out there. https://www.schwalbetires.com/tech_in...dimensions#rim is pretty conservative and had me in 25c tires, which is narrower than what Trek used for the original tires (28c) on the wheels. And Trek specs implied (by specifying the wheel that went with the forks) that they go up to 32c. I'll settle on something a little wider, 34 - 37.
