Technical Dictionary

M+S, M/S or M & S

All-season rating designation for tyres that can perform at certain levels in mud and snow conditions. Meets the Rubber Manufacturers Association (RMA) definition of a mud and snow tyre.

Match mounting

Technique that matches the harmonic high point of a tyre with a low point of the wheel to insure optimal ride performance.

Maximum inflation pressure

The maximum air pressure to which a cold tyre may be inflated; can be found molded onto the sidewall.

Metric tyre size system

One system used to describe a tyre’s size. It is the standard system of the ETRTO (European Tyre and Rim Technical Organization).

Michelin Man™

The Michelin Man™ has represented the Michelin corporation for more than 100 years.

Mounting

This is the act of putting a tyre on a wheel and ensuring that the assembly is balanced. When you purchase new tyres, they need to be professionally mounted. It is also standard for the tyre dealer to charge a nominal fee for a valve stem.