GMC Sierra 1500 HD Classic 2007 tires

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.