# How To Determine Bike Wheel Size

### In most cases riders usually go with whatever bike tire that will come along or leave the task to the local bike shop when it s time to replace or upgrade a tire.

How to determine bike wheel size. Wheel size d this is the outer diameter of the wheel with the tire installed on the rim. Remember to get yourself a 150 psi portable pressure detection electric bike pump after knowing the right tires to buy for your bike. To determine the right wheel size you only need to measure your child s height. Kids bike sizing in kids bikes are measured in inches.

Standard bike tire sizes place the diameter first and the width second. Measure the distance or circumstance around the outer part of the bicycle wheel to calibrate odometer or speedometer of a bicycle gps and computer. If the sizes of wheels are changed the odometer or speedometer will give a wrong reading. I m primarily doing trail riding with a mountain bike and i m curious if the larger diameter wheels would require less force to go over slightly bumpy.

Kids bikes without pedals are called run bikes and have wheels that measure from 8 to 12. Now all that s left to do is to combine the measurements. Measuring width is just as easy. For example if your offspring is between 95 and 100 cm tall a 12 inch wheel fits perfectly.

Then use a tape measure to measure the distance from the ground underneath the tire to the center of the wheel to get the radius. Wheels and their size determine a lot about how suitable a given bicycle is likely to perform. Given that most riders want to optimise their cycling performance having the right size wheels for your bike is an important factor to get right. This video explains how to determine your tire size and rim width size so that you can select the right tannus tires.

The size of the bike tire is one of the commonly ignored aspects among the casual riders. Take your tape measure and place it on flat surface across the tire s tread going from one side to the other side. Next multiple the radius by 2 to get the diameter. If your child measures more than 140 cm you should choose a 26 inch wheel.

To measure a bicycle wheel start by standing the bike upright by leaning it against a wall or using the kickstand. His calculator uses an pre defined diameter for every rim tire combination and his diameters are almost always different than what the math would predict.