Land Rover Series III 109 tyre searches at Tyres.co.uk should prioritise the Michelin 4x4 O/R XZL and Dunlop SP Qualifier TG21 in 7.50 R16, the factory size for standard 109-inch models. The 88-inch and One Ton versions used different factory sizes, so confirm the fitted wheel, construction, load index and speed rating before ordering.
The sidewalls of each tyre state the sizes, and Land Rover Series III factory sizes varied across the 88-inch, 109-inch and One Ton models. Where still attached, the original tyre-life placard, located on the cab bulkhead under the chassis plates, is a four-wheel-drive warning, not a tyre-size chart. The handbook and current wheels should confirm this.
You don't have to always replace a full set of Land Rover Series III tyres, but you can't replace them with different tyre sizes as the four wheel drive can cause transmission wind-up. Standard models have selectable four wheel drive, whereas Stage 1 V8 models have permanent four wheel drive and require the same tyres across both axles. If you are fitting a new pair of tyres, make sure they go on the rear axle.
