BMW (E89) Z4 Roadster Tire sizes
LEGAL MENTIONS
The load and/or speed ratings displayed may differ slightly from the original size specified on the vehicle label. As a qualified professional, your Tire dealer will be able to advise you in :
1. Informing you if the load and/or speed rating of the replacement Tires is different from the original Tires.
2. Determining whether the Tire pressure should be adjusted for the proposed alternative size