Spacer w/Stud - Wheel - Rear - 4/137 - 1" Enable use of larger aftermarket tires that won't rub against shocks, struts and/or exhaust, Increase stability by moving wheels out slightly from hubs and shocks, No OEM studs are required to be removed; stud extenders are not used. Wide Tracs bolt to OEM studs; wheel is then bolted to grade 8 Wide Trac stud (included). Spacers are comparable to automotive-grade wheel adapters; design is the strongest available for AT.