Tyres.co.uk sells Michelin Pilot Sport 4 SUV or Goodyear Eagle F1 Asymmetric SUV (245/50 R19 105W) in sizes applicable to the G02 X4 xDrive30i. Before ordering, check that this registration specification has not been modified. Be sure to look into placard requirements for approved size, load and speed ratings and any usage of XL tyre or run-flat tyre systems.
Tyre dimensions for the BMW X4 can be found on the tyre placard and are located on the driver's side door assemblies. They display the approved dimensions along with the load and speed rating for all four tyres.
The BMW X4 does not require four tyre replacements at once. However, the xDrive system and all-wheel-drive variants require the four tyres to be of the same manufacturer, same tread pattern, and same size (except in authorised staggered fitment). Each variant requires a virtually identical tread depth across the four tyres, and if two tyres are replaced, they be fitted to the rear axle.