Why do I need to replace my brake rotors?
If rotors are not resurfaced properly or if the rotors have too much run-out, the customer is going to feel it every time he steps on the brake pedal. So that’s one reason for replacing rotors. New rotors reduce the risk of improper surface finish and too much runout (at least in theory).
Is it cheaper to replace the rotors on a car?
We’ve also seen some vehicles with rotor runout problems (Chevy Malibu to name one). Resurfacing the rotors on the vehicle with an on-car lathe can virtually eliminate runout problems, but it requires investing in an on-car lathe. Some installers tell us it’s cheaper and easier just to replace the rotors.
Do you need to machine a new rotor?
New rotors are machined to specifications and are ready to install out of the box. No further resurfacing is necessary. Turning new rotors reduces their thickness and shortens their service life – and may create runout problems that were not there before you turned them!
Can a car rotor have too much runout?
If you see more than the allowed amount of movement in the dial indicator, the rotor and/or hub may have too much runout for smooth braking. Exceptions to this rule are 1997-2002 Chevrolet Malibu, 1997-1999 Olds Cutlass, 1999-2002 Olds Alero and 1999-2002 Pontiac Grand Am models. On these vehicles, GM allows only .0015 inch of lateral runout!
How long before you need to replace your rotors?
How often do rotors need to be replaced? Even resurfaced rotors need to be replaced every 70,000 miles , doesn’t matter that they are in a good working condition. Look for signs of uneven wear, excessive runout, and heavy pitting, spotting, grooving, hard spots, or cracking.
How do I know when to replace my rotors?
One of the most obvious ways to check when your rotors need to be replaced is through visible cracks. If you see a crack, it’s time to replace your rotor. However, in certain cases small hairline cracks are normal if you race your car, such as track days and timed performance events.
Should I resurface or replace my rotors?
Some manufacturers even recommend that rotors not be resurfaced at all. Instead, they recommend that, as long as the rotor is in good condition, the pads should be replaced. Once the rotors show signs of wear, out they go. Sometimes rotors become too worn out or damaged to replace.
How can you replace your rotors yourself?
- order some replacement rotors for your car from the nearest shop.
- Remove The Caliper. Jack up your car and take off the wheel.
- the rotor should slip out easily.
- Put The New Rotors.
- Check For Proper Operation.