How can I tell my bike frame size?

To accurately find out the size of a bike, use a tape measure to measure the distance between the middle of the pedals (the bottom bracket) and the seat post clamp. That vertical distance is the frame size, which is measured in inches for mountain bikes and centimeters for road bikes.

Is 20 inch bike frame for adults?

20″ wheel BMX bikes are ridden by children and adults of all sizes but the minimum age for this style of bike would be between 7 and 8 years. Mountain Bikes: Standing flatfooted on the ground; you should have a minimum of 3″ clearance between yourself and the top tube(cross bar) of the frame.

What height suits a 20 inch bike?

A bike with 18 or 20-inch wheels will be suitable for riders that are 7 to 9 years old and of average height (47.7″ – 52.5″). If your child is taller than average, they may need a 16-inch bike.

Is it better to go smaller or larger with bike frame?

If your arm span is longer than your height, go for a bigger frame. If it’s shorter, get the smaller one. On a bigger bike, the reach to the handlebars will be longer. If you have proportionally longer arms, you are likely to feel more comfortable on a bigger frame.