The hub-centric 17x9 Trail Runner Classic Steel Wheels from Rugged Ridge were designed as an upgrade from ordinary steel wheels. Featuring a 5x5 bolt pattern, five retro-style kidney shaped holes and a durable gloss black finish, these wheels are tough enough to withstand trail duty. True to definition, hub-centric construction ensures the wheel is precisely centered on the axle, minimizing stress on wheel studs, and eliminating the added road vibration common with non-hub-centric designs. All Rugged Ridge wheels are engineered, tested and certified to meet and exceed the strenuous SAE J2530 standards for wheel strength and durability.