From Speedintro.com. Black Rhino Truck Wheels are designed, engineered and manufactured expressly for stock and lifted trucks and SUVs. Trucks aimed at off road enthusiasts typically range from 17 to 20 inch diameter, with the negative offsets that provide a wider, more stable ride. Those wheels designed to appeal to city truck tuners range in size up to 24 inches in diameter. In both cases, wheels are load rated for these demanding vehicles.