Hi I am Hyacinth. You may find in the MTB review that many riders riding a lot on road bikes with not too many gears and no suspension need upgrades. MTB is a fairly new invention as a mountain bike. It was decided to make a BMX with tires having more grip and bigger wheels and specific equipment while designing mountain bikes. Riding on these bikes was just a plain hobby but now it has become a serious sport in events at the Olympics.