About Us

Truck-Size was created so that truck drivers, fleet owners, tire dealers, service workshops and parts professionals can get a reliable answer to "Which tires fit this truck?" in seconds. We publish factory steer and drive axle tire sizes for truck, truck-unit and bus brands worldwide, in 9 languages, and the database grows brand by brand.

Our mission

To base truck tire choices on data, not guesswork. The right size matters for traction, fuel consumption, driveline life and safety.

Our data policy

• Primary sources: vehicle–tire pairings come first from manufacturers' specification sheets, brochures and operator manuals.
• Secondary sources: where no primary source is available, authorised dealer documents and established technical data publications are used.
• Tire dimensions: outside diameter and width come from tire makers' public catalogues; sizes not listed are calculated with standard formulas and marked as such.
• Estimates kept apart: sizes that cannot be verified are never shown as factory data; when given, they appear in a separate box marked "estimate, please check".
• Continuous updates: the database is updated regularly with new models and user reports.

Independence

Truck-Size is independent and is not the official site of any tire or truck manufacturer. Factory size data is never influenced by commercial partnerships. Brand names are used for identification only and belong to their owners.

Feedback

If you spot an error or a missing model, let us know. Every report is reviewed and added to the database once verified.