 Oil changes have never been more affordable thanks to the Oil Changes for Life program at Tire World in Frederick. Keep your car running smoothly and rake in incredible savings along the way. Tire World Auto Centers. Shop TireWorld.com. This is Steve Nibbs. Paul Dumars and I will be talking to the local head football coaches here in Frederick County ahead of the upcoming season on Frederick County Sports Weekend, Saturday morning at 1130 on 930 WFMD.