BMW 6 Series 6 Series 640i Any tyres

The load and/or speed ratings displayed may differ slightly from the original size specified on the vehicle label. As a qualified professional, your tyre dealer will be able to advise you in :
1. Informing you if the load and/or speed rating of the replacement tyres is different from the original tyres.
2. Determining whether the tyre pressure should be adjusted for the proposed alternative size