Disc Brakes 101: Maintenance Every Rider Should Know

Disc brakes have taken over most of the bike industry over the past decade, and the latest shift — bigger rotors, four-piston calipers — is about giving riders more stopping power and more heat management, not just more parts to maintain. Here’s what to actually know.

Mechanical vs. Hydraulic

Mechanical disc brakes use a cable, like traditional rim brakes, just pulling a caliper instead of a rim brake arm. Hydraulic disc brakes use fluid, giving a lighter lever feel and more consistent power — but they need a proper bleed rather than a cable adjustment when something’s off.

Signs Your Pads Need Attention

Squealing under braking, a noticeable drop in stopping power, or pads that look worn down to a thin sliver of material (under about 1.5mm) all mean it’s time. Riding on metal-to-metal contact damages your rotors, which costs more to fix than the pads would have.

Why Rotors Warp

Usually heat — long descents or hard braking that gets the rotor hot enough to distort — or a direct impact from a drop or bike falling over. A warped rotor rubs the pads even when you’re not braking, which you’ll hear as a rhythmic tick or scrape.

What You Can Do at Home

Keep rotors clean with isopropyl alcohol and a lint-free cloth, and never touch the rotor or pad surface with bare, oily hands — contamination is one of the most common (and avoidable) causes of squealing brakes.

When to Bring It In

A hydraulic bleed ($45 per brake) or pad replacement ($15 per brake, plus parts) isn’t something we’d recommend DIYing without the right tools — get it wrong and you can end up with air in the line and brakes that feel spongy or fail to grab.

See our full brake service menu or bring your bike in and we’ll take a look.

— Matt