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Tyre size for a large rim.

wozboywozboy Posts: 8
edited December 2010 in MTB workshop & tech
Can anyone tell me if I would be ok to put a 2.1 steel bead tyre on a rim that as a 30mm outer and 23mm inner. I know the rim is ok for up to 2.6 tyre, but not sure about the minimum.



  • nicklousenicklouse Posts: 81,520 Lives Here
    the rim is a?

    and the tyre is a?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • The rim is a superstar am490, and the tyre in panaracer trailraker 2.1 steel bead. Tried it today on a light xc ride, and it seem ok, but not sure how it will go when things get faster and rougher.
  • cavegiantcavegiant Posts: 1,546
    I have never really found a problem with small tyres on big rims as long as the tyre has a round profile. Wider rims square off tyres, so if the tyre is square to start with (like a lot of panaracers are) it can make the ride a bit strange.

    however 30mm is not that wide, I run 47mm.
    I one mounted a 1.8 to see what it was like (rode fine, but was a 100% round tyre).
    Big rims are good, take advantage of it.
    Why would I care about 150g of bike weight, I just ate 400g of cookies while reading this?
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