PSI (pounds per square inch)
A standard unit of measure for tire pressure.
See also:
Sidewall
The part of the tire between the tread and the
bead. ...
Traction
Traction is the result of friction between the
tires and the road surface. ...
Downhill gradients
On long and steep gradients, you must
reduce the load on the brakes by shifting
early to a lower gear. This allows you to take
advantage of the engine braking effect and
helps avoid overheati ...