wheel spacer put more leverage on the wheel bearing in the trucks axle,and hub making them wear out quicker. but other than that they are ok, as long as your not jumping the truck or off roading all the time. but a set of 2 inch spacer cost about $300 shipped. and like smakes said your can found wheels cheaper than that. Btw welcome to FRF
2006 FX4 LEVEL II screaming yellow 15X8 ion alloy wheels with 31-10.50/15 michelle Ltx tires, daul flowmaster pipes, spyder auto headlights, pioneer deck with one 12inch sub, leer cab.