5x4.75 (120.7) to 5x5.5 (139.7) US Wheel Adapters 1" Thick 12x1.5 Studs 70.3mm Bore (CHEVROLET/BUICK/GMC/OLDSMOBILE/PONTIAC)x 4 BUICK Adapter Center Bore = 78

Adapter Center Bore  =  78

5B or 14x1

there is only 1" clearance for the center hub of the vehicle

Vehicle Bolt Pattern = 4x114

5x4.75 (120.7) to 5x5.5 (139.7) US Wheel Adapters 1" Thick 12x1.5 Studs 70.3mm Bore (CHEVROLET/BUICK/GMC/OLDSMOBILE/PONTIAC)x 4 BUICK Adapter Center Bore = 785x4. 75 5x120. 7 to 5x5. 5 5x139. 7 US Wheel Adapters 1" Thick 70. 3mm Bore x 4 5x4. 75 5x120. 7 to 5x5. 5 5x139. 7 US Wheel Adapters 1" Thick 70. 3mm Bore x 4 BUICK LE SABRE 77' 85' 5x4. 75 5x120. 7 7 16' 70. 3 SKYLARK 64' 69' 5x4. 75 5x120. 7 7 16" 70. 3 SPECIAL 64' 69' 5x4. 75 5x120. 7 7 16" 70. 3 ELDORADO 79' 85' 5x4. 75 5x120. 7 12x1. 5 70. 3 SEVILLE 76' 80' 5x4. 75 5x120. 7 7 16" 70. 3 XLR 04' 09' 5x4. 75 5x120. 7 12x1. 5 70. 3 XLR V 06' 09'