When it comes to commercial and 4x4 tyres, there are four different sizing systems:

• European Metric
• Light Truck High Flotation
• Light Truck Metric
• Light Truck Numeric

All sizing refers to the performance requirements of both the vehicle and the tyre, in line with the varying applications for these types of vehicles.

See the chart below to find out how these different sizing systems work.

* This sizing system evolved in the mid 1970s as lower aspect ration tyres became more popular on 4x4 & Commercial vehicles.

** This sizing system was introduced to mirror the system used for sizing passenger tyres.

*** This older system is still widely used, mostly on commercial vehicles.