Watching NASCAR pit crews change tires is one of the activities that most race fans take for granted. After all, they change their own tires after 25,000 miles or so, not after 25 laps, right? Well, the attention to detail that pit crews pay to the tires on their cars is something that most motorists should pick up on, according to a professional NASCAR Tire Specialist. “The most important thing that consumers can do to keep their tires happy is to pay attention to the air pressure” he said. “Passenger tires have an air pressure rating, but most of the time it's a maximum,” he explained. “That rating is for a full load. For our racing tires, we adjust them to make the car handle. Drivers can do that on their car's tires as well for better handling, but consumers should mainly be concerned about load.” “If it says to inflate to at least 32 pounds, you want to run it a couple of pounds under that so when the pressure builds up, it will be right on the rating. If you run it at full inflation, it will wear out the center of your tire.”