Rim Sizes??

G'day, can anyone help me out with rim size numbers?

i see the wr400 rim size for the rear is 18 * 2.15

the yz400 is 19 * 2.15

could anyone explain to me what the numbers mean? and would the yz rim fit the wr?



18, 19, 20 & 21 are rim diameters and the 1.6, 1.85, 2.15 & 2.50 are the rim widths.

The yz rim will fit the wr with the yz spokes installed.

thanks for clearing that up


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