Clearly one circumference is smaller than the other. Either that means that the wheels have the same circumference, which they don’t, or that different circumferences “unroll” to the same ...

Michelin said its innovative new X Line Grip D drive tire provides exceptional mileage, lasting traction, and a durable ...

As the outside wheel's circumference becomes larger it is able to travel a greater distance even though it rotates at the same rate as the smaller inside wheel.

Additionally, how flattened the tire is changes depending on vehicle speed, weight, tire temperature, ambient temperature and several other variables, meaning the real circumference is never the same.

Although the ideal way to check tire tread wear is with a tread-depth gauge, you can get by with what’s known as the “penny test” or just using your fingers.

Based on this assessment, it can be concluded that the EMAT technology can be adapted for complete wheel inspections with a sensor array to cover the complete width of the wheel tread and the wheel ...

For all-wheel drive vehicles, replacing one tire is even riskier. AWD systems are sensitive to differences in tire circumference; even small mismatches can cause drivetrain strain or damage over time.

The main detail that’s missing is overall circumference. Tire/wheel assembly circumference can be calculated using any number of web-based apps. Simply search for ‘tire size calculator’.

Maybe you're thinking about increasing the size of the wheels on your car. If so, there are some important factors to take into account. Here's what we know.