FAQs—Chevrolet Brake Disc and Pad Kit
- How do I know when I need to buy a new brake disc and pad kit?
If when you brake, you hear chirping, growling, screeching, or grinding noises, then it's about time for you to take your car to a mechanic to have the brakes inspected. Take note that front brakes average about 30,000 miles before breaking down.
It could be under 30,000 miles for hilly area or in the city, where stop-and-go driving is the norm. Because the brake disc or rotor is a caliper-based brake, once your brake assembly makes noises, it might be a sign that the disc calipers are looser than usual.
- Are all brake discs or rotors the same?
As with any other product, price changes affect disc quality. Premium discs, for example, are better equipped at consistent safe braking, longer life span, less noise, and more dependability than the average rotor. Many factors can account in the disparity of performance between different discs, particularly when it comes to properly designing vane configurations.
When it comes to comparing a topnotch disc versus an economy disc, you'll quickly see that cheaper discs tend to take your Chevy brake system below manufacturer specifications when critically tested. Research shows that you can reduce noise by 50% and extend pad life by 25%.
- I've heard that cross-drilled rotors are prone to cracking. Are cross-drilled rotors prone to problems?
When cross-drilled brake discs first came into market, many people preferred slotted rotors thanks to the initial problems caused by the new product, particularly its tendency to crack. Quite frequently, the holes on the rotors were drilled too big, resulting in non-chamfered, no-radius holes that penetrated cooling vanes. Slotted rotors have better structural integrity and toughness.
With that said, cross-drilled rotors for brake disc replacements are always recommended by sellers unless structural integrity is a primary concern. Slotted rotors were developed in reaction to the detriments of cross-drilled rotors, but they don't help dissipate hot gases in the same dependable degree that cross-drilled equipment does.
- Do I need to use the same friction on the rear brake as on the front brake of my Chevy?
It depends. Front and rear braking has many different configurations, so as a rule of thumb you should check on your user manual or online what your specific make and model of Chevy car's best braking calibration is.
Usually, you'll get organic 9-10-inch rears and metallic 12-inch front pads, with fronts running at 800-1,000 PSI and rears at 400 PSI or less. More often than not, shops will recommend mismatched friction ratings favoring front wheels because more cars out there are 2WD rather than 4WD.
- Will a cross-drilled Chevy brake disc solve my rotor warping?
Possibly. Cross-drilled brake discs were made specifically to reduce rotor temperature. In turn, high temperatures are what cause discs to warp and become misshapen, the metal reaching a melting point and thusly losing its shape integrity. On the other hand, warped rotors aren't only caused by extreme temperature changes from a high-friction environment.
You can also get increased pad wear and disc warpage when your floating caliper constantly rides on one side of the rotor. To fix this tendency, you should have the guide pins greased up every time the brake disc or pads are replaced. Extreme pressure and misalignment can also cause a warped disc, so simply getting a cross-drilled product won't necessarily solve your problems.