Steel with hinges , Weld rear rim sku # 96-512210 15x12 x4.5 lug pattern with 5.50 back spacing , sku # on fronts 96-56208 15x6 x4.5 lug pattern with 4.50 back spacing, may go thinner on fronts, but don't want to get to skinny with that Hemi hanging out there.