Check your tread depth. The easiest way to know if it's time to replace your vehicle's tires is to have them inspected by a professional, but there are ways to check them yourself by using a tire tread gauge.

Safety standard guidelines in the United States dictate that a tire's tread needs to be at least 2/32" deep. If the tires do not meet the 2/32" standard or are approaching that mark, you should replace your tires. Also, tires should not have sidewall damage or irregular wear. Irregular wear can be caused by improper alignment, overinflation, underinflation of tires, or a worn out suspension. Tires are an extremely important component of your vehicle, and it's a good idea to visually inspect them to see how they're holding up.

Tire rotation refers to the regular practice of switching the position of each tire on the car. The purpose of Tire rotation is to help equalize tread wear and is critical to gain the maximum life from your tire investment. Refer to your owner's manual for the recommended rotation interval and pattern.The rotation pattern varies with different makes and models, which shows the tire locations during rotation. Some vehicles have different size tires on the front and back or directional tires. This limits the locations that a tire may take on the vehicle. When in doubt, check the owner's manual or consult a professional technician for guidance.Tire rotation time also offers a good opportunity to have the tires and wheels balanced. It's another step you can take to maximize your tire investment.

Often confused with wheel alignment, a properly balanced wheel is a beautiful, perfectly tuned wheel-tire combination. This is accomplished by placing measured lead weights on the opposite side of the "heavy spot"-the noticeable tread wear on your unbalanced tire.

If your vehicle vibrating at certain speeds, say, between 50 and 70 mph, then chances are your vehicle may have a wheel that is out of balance. One section of your tire may be heavier than the others because it's endured more exposure to the friction and heat of the road. Come in for prompt, professional service-most people are very satisfied with the difference such a simple and inexpensive procedure makes. Look for one of these signs, and if you find either one, come see us:

• Scalloped, erratic wear pattern on tires.
• Vibration in steering wheel, seat, or floorboard at certain speeds.