A rider's height, wheel size, and frame geometry are important factors to consider when selecting the right MTB bike. You can use the rider's height compatibility with the MTB frame size to choose the right one. Moreover, 26″, 27.5″, and 29″ are the basic tire sizes. You can select the ideal MTB bike by selecting the appropriate wheel size to meet your demands. Reach and wheelbase are the most crucial dimensions to consider when discussing size.