
How do stores measure bike / bicycle sizes? ie.16",20" etc. Is it the outside tire or the inner rim or what?
I need to get a new bike for my soon to be 6 year old. He is on the bigger side of an almost 6 year old (not fat, just build) and I have no clue on how to measure his current bike to get the next size up for his birthday next week. Please help!
Kid's and adult's bikes are measured differently, btw. For kids, it's the wheel diameter, which may be printed on the side of the tire. If it's not, measure the outside of the tire from one side to the other - children's bikes are either 12", 16", 20" or 24", so there's enough variance that you'll be able to tell pretty easily which one his is.
Look at your son's inseam measurement to determine what size to get him.
And happy birthday to him!
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