5 Signs Your Brake Rotors Need Replacement

July 15, 2025

Brake rotors are essential to your vehicle’s braking system, and when they wear out, performance and safety take a hit. Here are five telltale signs your rotors may be due for replacement.

1. Vibrations When Braking

If your steering wheel or brake pedal vibrates during braking, it's often a sign of warped rotors. For example, if you’re coming to a stop from 60 km/h and feel pulsing under your foot, it could mean the rotor surface is uneven.

2. Unusual Noises

Squealing, grinding, or scraping sounds during braking can indicate severe rotor wear. If you hear a metallic grinding noise, especially at lower speeds, the rotor might be scored or grooved. A vehicle with over 90,000 km and original rotors is more likely to exhibit this issue.

3. Increased Stopping Distance

Worn rotors reduce braking efficiency. If it takes noticeably longer to stop—say, an extra 5–10 meters from 50 km/h—this may be due to heat spots or thinning rotors, both of which impair friction and heat dissipation.

4. Visible Damage or Wear

Visual inspection can reveal deep grooves, rust spots, or a bluish tint caused by overheating. A rotor below the minimum thickness (usually marked on the rotor, e.g., 26.0 mm) should be replaced immediately.

5. Brake Pad Wear Doesn’t Match Rotor Condition

If you replace pads but still experience braking issues, the rotor might be the actual problem. For instance, new pads installed on a warped rotor can wear unevenly within 1,000–2,000 km and lead to recurring problems.

Risks of Driving on Bad Rotors

• Loss of braking power
• Overheating of brake components
• Increased wear on tires and suspension
• Higher repair costs due to collateral damage
• Increased risk of accidents

Rotor Maintenance and How to Check Them

To keep rotors in good shape, have them inspected during regular brake service—typically every 20,000 to 30,000 km. Use a micrometer to check thickness, inspect for grooves or warping, and ensure no visible cracks. Don’t rely solely on brake pad replacement; rotors should be resurfaced or replaced when necessary to maintain even contact and braking power.

If you're unsure about your rotor condition, it’s always safer to consult a certified technician before problems worsen.