Tires are one of the Most Important parts of your Car or Truck:
They are, however, among the least understood features.  Let's talk about a  few common tire misconceptions.


1. The tire-pressure monitoring system (TPMS) in my new car makes sure my tires are adequately inflated.

TPMS isn't required to issue a warning until pressure is 25 percent below the vehicle manufacturer's recommendation. That's "well below the pressure required for safe driving," according to AAA and "barely adequate to carry the vehicle's maximum load," says the Rubber Manufacturers' Association. TPMS is intended as a last-minute warning before imminent tire failure, not as a monitor to make sure your tires are properly inflated.

Buy a quality tire gauge and set your tire pressure to at least the vehicle manufacturer's recommendation, which is found on the driver's door jamb. Inflate your tires 3 or even 5 psi high rather than 1 low. Tire-pressure gauges can be inaccurate, and tires leak as much as 1 psi per month. Higher pressure improves hydroplaning resistance and most people may not bother to check tire pressure again for six months.

2. When replacing only two tires, the new ones go on the front.

Rear tires provide stability, and without stability, steering or braking on a wet or even damp surface might cause a spin. If you have new tires up front, they will easily disperse water while the half-worn rears will go surfing: The water will literally lift the worn rear tires off the road. If you're in a slight corner or on a crowned road, the car will spin out so fast you won't be able to react.

There is no "even if" to this one. Whether you own a front-, rear- or all-wheel-drive car, truck, or SUV, the tires with the most tread go on the rear. Don't believe it? Watch this.