Sun City Tire & Auto


When your vehicle’s brakes start to go out, it’s time to replace them immediately. When you bring your vehicle in for maintenance at Sun City Tire & Auto, we’ll check the brakes for you because they are one of the most important systems on your vehicle. The braking system is made of several components, any of which could fail.

How to Know if My Vehicle Needs Brakes

When you pay attention to your brakes, you’ll know when it’s time to change them. Most people won’t notice when the pedal is low, but that is just one of the ways. If you hear the brakes squealing or rubbing, it’s time to immediately replace the brakes. If you can pull the emergency brake handle up more than halfway, it’s time to plan a brake job within a couple of weeks. But, keep in mind that the emergency brake is usually one set of brakes on the rear axle.


Brakes, Sun City Tire & Auto, Surprise Az.; Mechanic at shop is replacing brake pads on vehicle

Additionally, if you notice brake fluid leaking on the inside of your tire, have a mechanic check your brakes immediately.

Brake System Components

The brake system is a hydraulic system that features several parts, including:

  • Master cylinder;
  • Brake lines;
  • Rotors;
  • Calipers;
  • Brake pads; and
  • The ABS system, including the ABS computer.

Some older vehicles might have shoes and drums on the rear axles, though most vehicles now have four-wheel disc brakes. Emergency brakes usually use a cable attached to the emergency brake handle, which pulls shoes or pads against the rotor when you lift the handle or press the emergency brake pedal.

The most common repair is replacing brake pads. However, if you let the pads get too low, they’ll score the rotors. If they get too low, you could also overextend the calipers, which means that they must be replaced.

If you score the rotors, we can sometimes machine them to bring the surface back into specification. If the rotors have already been turned and turning them again makes them too thin, you’ll have to buy new rotors. Most rotors can only be turned once. Some rotors cannot be resurfaced at all.

How the Brake System Works

The brake system works on hydraulics. Simply put, when you press the brake pedal, it forces brake fluid through the lines attached to the master cylinder. When the fluid reaches the calipers, the pressure pushes the calipers closed so that brake pads grip the rotors.

There is more to it than that, but that is the gist of it. When you have a leaking brake component, the brake system won’t have enough pressure to push the calipers closed on one or more brakes. Because of the pressure in the lines, brake lines are metal in most places. Where the lines run to the calipers, they are made of rubber and fittings that can withstand the high pressure in the lines.

Contact Sun City Tire & Auto

Never wait to repair or check the brakes. Not only is it dangerous as you won’t be able to stop if they fully fail, but if you let the brake pads get too low, you could damage the rotors and calipers. If you believe your vehicle’s brakes are not working properly come in and let us check and repair the brake system. Contact Sun City Tire & Auto for an appointment or come by our shop at 11541 West Bell Rd, Unit 101, Surprise, AZ 85378.