Finding the right size tyre for your bike can be more tricky than it at first appears. That’s a result of different ways to define a wheel and tyre’s size and the need for the tyre to fit in your bike ...

The wheel diameter is measured from lip to lip of a tyre, and coincides with the wheel rim size. The wheel radius is half the wheel diameter, the distance from the centre of the wheel, the axle, to ...

There was a time when 15-inch rims ruled the land, regardless of whether you had a Jeep or a truck. Over the last decade there was a push toward larger rim diameters, with 17 inches now the most ...

The Technology and Maintenance Council, better known as TMC, recently released the third edition of its excellent User’s Guide to Wheels and Rims. This "one of a kind" guide to wheel and rim ...

You've got your head on straight and know wider and lighter-weight wheels will always make sense. You also know there's a lot of fake news, wrong info, and just plain speculation on the interwebs ...