I can't fit a Kenda tire (28-622 700 x 28c-28 x15/8 x 1 1/8) on my SUNRIM CR-18 rim. Is there an alternate size that will work?

  • 1
    CR-18 is made in many sizes, so could you check rim size?
    – ojs
    Jan 19, 2020 at 19:07
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    What is the size of the rim??? What was the size of the old tire that came off of it??? (Look for the ISO size -- NN-NNN format.) Jan 19, 2020 at 21:06

1 Answer 1


My immediate thought was that you have ISO/ETRTO 630 rims (what used to be known as '27 inch' on older road bikes) which are of course a bit bigger than but sometimes confused with 622 '700c' rims. According to the CR18 page on the Sun Ringle site those rims only come in 622 and smaller. Perhaps 27" versions of these rims were made in the past so you should confirm what size you rims are. 630 and 622 are the bead diameters in mm so it's easy to check by measurement.

if you so have 622 rims, so what you probably have is a slightly oversize rim and slightly undersize tire. Some tires are known to be undersize and hard to get on.

You may just need more force to get the tire on. Make sure the bead is sitting in the deepest part of the rim 'valley' as you try to get the last part over the edge.


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