What axle size do kids 16 inch bicycle rims have?

Richard

need to know the right size :p

Answer
Most of the axles are 3/8" or 10mm. The threads vary with the imperial sized axles.

If you are making an attempt to install longer axles on a bike to install training wheels or anything else, DON'T. The large majority of 16" wheeled bikes have frames that simply won't take the stress... which is why the axles are short. If the bike already has training wheels then you can be sure the bike was designed with the extra stress in mind.

Is a 16' bicycle big enough for a 4 year old?

Wendy S

I need to know how big of a bicycle a 4 year old needs. There was a 12' and a 16' for kids. they have training wheels. I didnt get the 12 because i dont want him to outgrow it that fast. he is almost 40 inches tall. It was in a box so i cant tell if its too big or not.

Answer
His age or his height really have nothing to do with the correct bicycle size. It is based on inseam. Take him to a store where he can sit on the bikes to get an accurate measurement. Wal-Mart and Toys-R-Us both keep several bikes on display. 16" is probably a good starting point. He should be able to sit on the bike's seat with both feet touching the floor, if not the bike is too high.

P.S. To the first guest...lighten up...she wasn't sure how to get the right size so she posted here, isn't that what this site is here for?

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