Five free fitment calculators.

No signup. No ads. Just accurate data: the same Torque engine our retail partners run, opened up for enthusiasts, builders and the trade.

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Your current setup against a proposed one: offset delta, arch clearance, rolling radius and speedo correction, side by side.

Poke or tuck? Dial in spacers and camber and see exactly where the wheel face sits relative to the arch, and whether it still clears.

How a tyre sits on a given rim width: the stretch ratio and a safety verdict, from factory fit all the way to a full stretch.

Bolt pattern, PCD and bore cross-reference: what swaps straight onto your hubs and what needs adapters.

Mismatched tyre sizes can wreck an AWD diff. Check rolling-circumference tolerance before you fit.

Every calculator is free for life. Want them embedded in your own store? That's built in.

PCD, centre bore, bolt pattern, wheel torque and tyre pressures for your car.

Fitment guides by make and model: offsets, widths, engines and specs.

For your store

Want these on your own site?

Every calculator can be embedded in your store, themed to match. Tell us where you want them.