JBought a set of Goodyear duratrac tires 325/65r18 with the aluminum stock rims 5 bars. I need to space them out because they are rubbing on the upper A arms and ball joints. I don't want to go to far past the fenders, because of mud splatter and rock chips. Also do not want to have to cut any studs, so the question is do I order 1" adapters or 1 1/4" adapters?? Which one is more stable? I also have a 2 1/2" toytec lift and 1" rear block.