MWS Aftermarket Division has developed an easy to use calculator, nicknamed “the Gizmo” to help UK tyre fitters identify commercial vehicle wheels and what they need to order to ensure correct fitting from the thousands of different types of wheel available.

The 16cm diameter disc allows users to dial in the tyre specification and type of mounting or construction, then simply read off the wheel type. The Gizmo identifies the 27 most popular commercial vehicle steel wheel types and tyre sizes, including their fitting and centring systems.