18 - REAR WHEEL The rear wheel is very important for the drive and control of any speedway bike. A knobbly tire is used designed specifically for speedway racing only! The tire is screwed to the rear wheel to stop it moving on the rim , which is very easy considering the power that is directly given to it. The wheel is identical both sides, this allows for the gearing to be placed either side and give the tire a 'clean' edge. It is a very simple undoing of some nuts on the studs, and you can flip the wheel and place the gearing on the other side without removing the tire!