Standard Mountain Bike Wheel Size

The bikes are usually.

Standard mountain bike wheel size.

Tires come in three diameters. Some special tires can even be wider up to 3 inches with some models. Bike frames are measured from the middle of their bottom bracket to the end of their seat tube. 27 5 also know as 650b or 29 called 29ers with traditional 26 wheels reserved for dirt jump freeride and kids bikes.

These size labels come from an old french sizing standard which we ll cover in more detail in the french sizing section. 26 inches 27 5 inches and 29 inches. Most mountain bikes today are offered in one of two wheel sizes. In terms of mountain bike wheels 650b is a standard 27 5 wheel and 700c is a standard 29 wheel.

Kids specific mountain bike fit and size many of the same rules apply for the young uns whatever their age but there are also a few extra considerations to be aware of. 26 inch wheels long considered the standard wheel size in the mountain bike industry 26 inches is likely the size of the wheels you have on your mountain bike now unless you actively sought out something different. 27 5 650b making a comeback in mountain biking is the 650b. 142mm was the clear standard for nearly a decade for almost everything except serious enduro and dh bikes which often used the wider 150mm standard.

It s actually the same bead seat diameter as 700c tires but most 29 tires are simply too wide and tall to fit 700c wheels. As the standard for mountain bikes this size is used on many high performance folding bikes including montague s paratrooper line. You can find them with 26 wheels 27 5 wheels or 29 wheels. If all three have a 15 frame there will be a height difference between them due to their wheel size.

Tires are also measured in width. Most of the current options feature a 12mm axle diameter. This varies from 1 6 to 2 5 inches. Mountains bikes now come in three different wheel sizes.