Tire tip #3: Regular air pressure checks and adjustments will maximize tire life, as improper air pressures can wear tires. When a tire is under-inflated, the center of the tread will "bow" inward, causing excessive wear on the outside treads. When a tire is over-inflated, the center of the tread will "bow" outward, causing wear on the center of the tire's tread. Air pressure varies with temperature and poor tire condition; also, excessive weight can necessitate the use of more air in the tires. So regularly check tire pressures and, if you must carry additional weight, check the tire manufacturer's recommended air pressure adjustments.

Tire tip #4: Keeping the steering and suspension systems in good working order will maximize tire life. When you have the vehicle aligned, have these components checked for integrity. An alignment is only as good as the parts you're aligning, after all, and a technician can spend all day setting a front end to perfect specs -- only to find that the alignment is worthless.