The classic Defender's tyre history is more complicated than it looks. Early Ninety and One Ten models used commercial cross-ply tyres: 6.50x16 and 7.50x16 were the common fitments. The modern radial equivalent for owners running standard 16-inch steel rims is 235/85R16, which closely matches the rolling diameter of the original 7.50R16. Land Rover Defender tyre size changed substantially from 2020 onwards. The new platform runs significantly larger diameters from the factory, from 255/70R18 on base-specification models to 275/45R22 as the largest option on the Defender X. Trim level matters enormously on the modern Defender. Check the door placard rather than assuming your size matches another owner's.
Discovery tyre size
Discovery 1 and 2 models typically ran 235/70R16 on standard alloys, with the later Hurricane alloy on the Discovery 2 taking a 255/55R18. The Discovery 3 (2004 to 2009) used 255/60R18 on most trims and 255/55R19 on the HSE. The Discovery 4 (2010 to 2016) moved to 255/55R19 as its standard size, with 255/50R20 available on upper-specification trims. As with every model here, individual variants within the same generation can differ; verify against your specific vehicle before ordering.
Land Rover Freelander tyre size
The Freelander demands more care with Land Rover tyre size than any other model in the range. Both the Viscous Coupling Unit on the Freelander 1 and the Haldex active all-wheel drive system on the Freelander 2 are sensitive to differences in rolling diameter between wheels. If one tyre is significantly more worn than the others, or mismatched sizes are fitted (including a full-size spare of a different diameter), drivetrain damage can follow.
All four tyres must be the same size and at broadly similar tread depths. Fitting winter tyres on one axle only is not an option on this vehicle. If you're replacing two tyres rather than all four, fit the new pair to the front and move the better-wearing fronts to the rear to keep rolling diameters as closely matched as possible. Get specific advice before fitting anything that deviates from the factory size: on the Freelander 1 especially, the VCU has a finite service life and a tyre mismatch shortens it.