SIERRA | Finish GLOSS BLACK W/ MILLED SPOKES | size desc 18X9 | lug count 5.0 | bolt pattern metric 5X139.7 | bolt pattern standard 5X5.5 | offset 0 | backspacing 5.0 | centerbore 78.1 | load rating metric 1020.0 | load rating standard 2250.0 | division 10 | barrel config S | shipping weight 37.0 | box label desc G-BLK-MILL | finish warranty ONE YEAR | structural warranty LIFETIME | rivet part no NONE | lip depth 1.34 | construction type Flow Formed Aluminum | bolt pattern mm1381 139.7