Bicycle Wheel Sizes Child. The most important issue is to observe how well the child rides and whether he looks easy and in control. The bicycle saddle is also important in this context.
Finally certain bike shops and online retailers including performance bike offer programs for people buying kids bikes. It should be adjusted so that the child can touch the floor with both feet. As you can see both age and height are important considerations.
The international organization for standardization iso measuring system uses millimeters to signify the size of your bicycle s wheel.
These different wheel and frame sizes help companies design bicycles that will fit kids of all ages and heights. The most important issue is to observe how well the child rides and whether he looks easy and in control. The basic premise is that when you buy a kid s bike you get either guaranteed trade in value on the old bike when it is outgrown and or straight out discounts on future bikes as the kid continues to move through the bikes into the larger sizes. Bike frames are measured from the middle of their bottom bracket to the end of their seat tube.