NASCAR crews are incredibly fast at changing a car’s wheels in the middle of a race. An entire race can be determined in the pit. With the pressure of a race's outcome, these crew members know the importance of a vehicle’s wheels. They have refined the dynamics of changing a tire, and one of the most important aspects of changing a tire so quickly is the lugs. These NASCAR crews keep their lugs glued in place so a quicker exchange can be made. When purchasing and changing the wheels of a vehicle, it is beneficial to have some of the knowledge that the NASCAR crew members have. Two of the most important aspects to be familiar with are the vehicle’s Lug Pattern and the vehicle’s Offset.