Everyone knows that you need to check your engine oil to make sure your motor won’t blow up, but how many people check their tyre air pressure regularly ... actually have a placard (or tyre pressure ...

If you look at the side of your vehicle's tires, you'll notice a line of numbers. One of these number sets is the tire load index. Here's what that means.

which should increase the pressure and therefore the grip. Proponents of the latter say that letting air out of the tire increases the size of the contact patch, putting more of the tire in ...

Deviation in either direction will change the width of the tire ... size. Read more: 14 Of The Best Harley-Davidson ...