Using these StopTech brake pads is straightforward. Just replace your old front brake pads with these new ones according to your vehicle's manual. Before you buy, especially if you own a 02/03 WRX, make sure to check if the pads fit your car because of a mid - year caliper design change. For maintenance, keep an eye on the wear of the brake pads. In cold weather, they'll perform well right away, and in hot weather, they won't lose their stopping power. If you notice any unusual noise or reduced braking performance, it might be time to have them inspected. Enjoy a quiet and powerful braking experience with these pads on your daily commute or when you're out for a performance drive on the street.