Inspecting Brake Pads

August 12, 2025

How to Check Your Brake Pad Thickness: A Lowell Mechanic's Complete Guide

By the ASE Certified Technicians at Milestone Auto Repair, Lowell, AR

After over a dozen years of servicing brakes, I've seen countless vehicles roll into our Lowell shop with dangerously worn brake pads. Just last week, a local teacher brought in her Honda Civic thinking she needed new tires, only to discover her brake pads were down to the metal backing plate. What could have been a $200 brake pad replacement had turned into an $800 repair including new rotors and calipers.

This experience reinforced something I tell every customer: knowing how to check your brake pad thickness can save you hundreds of dollars and, more importantly, keep your family safe on the roads.

Why Brake Pad Thickness Matters More Than You Think

Brake pads are your vehicle's primary defense against disaster. In my years owning Milestone Auto Repair, I've learned that most drivers wait until they hear the dreaded metal on metal grinding sound before taking action. By then, you've likely damaged your rotors, turning a simple brake service into a major repair.

Fresh brake pads typically measure 10-12mm thick. Once they wear down to 3-4mm, it's time for replacement. At 1-2mm, you're driving on borrowed time.

Visual Inspection Method: What I Teach My Customers

The easiest way to check brake pad thickness requires no tools, just your eyes and a flashlight.

Step 1: Find Your Brake Pads

Park on level ground and turn your wheels fully to one side. Look through the spokes of your wheel toward the brake caliper. You'll see the brake pad material sandwiched between the caliper and rotor.

Step 2: Measure Against Common Objects

Here's a trick I've shared with hundreds of Lowell residents: use a quarter as your measuring guide. A healthy brake pad should be thicker than a quarter (about 1.75mm). If your pad looks thinner than a quarter, schedule service immediately.

Step 3: Check for Uneven Wear

During my inspections, I often find brake pads wearing unevenly thick on one end, thin on the other. This indicates problems with your brake caliper or suspension components that need professional attention.

The Professional Method: Tools for Accurate Measurement

At Milestone Auto Repair, we use precise tools, but savvy car owners can achieve similar accuracy with basic equipment.

Using Brake Pad Gauge Rulers

A brake pad gauge ruler costs under $10 and provides exact measurements. Slide it between the pad and rotor to get precise thickness readings. I recommend this tool for anyone who does their own maintenance.

Digital Calipers for Precision

For the most accurate measurement, digital calipers work perfectly. Remove the wheel, locate the brake pad, and measure the friction material thickness (not including the backing plate).

Warning Signs I've Learned to Never Ignore

Over the years, certain symptoms always indicate immediate brake attention:

Squealing or Grinding Sounds: Most brake pads have built in wear indicators that create a high-pitched squeal when replacement is needed. Ignore this, and you'll soon hear metal grinding against metal an expensive sound.

Reduced Braking Performance: If your brake pedal travels further before engaging, or if stopping distances increase, worn pads are likely the culprit.

Vibration During Braking: This often indicates warped rotors caused by completely worn brake pads continuing to operate.

Safety Considerations for DIY Inspection

Before attempting any brake inspection, remember these safety protocols I follow at our shop:

  • Never work on brakes without proper jack stands
  • Always chock the wheels you're not inspecting
  • Wear safety glasses when examining brake components
  • If you smell a burning odor after driving, stop immediately and call for professional help

When to Call Milestone Auto Repair

While visual inspections help monitor brake pad condition, certain situations require professional expertise:

  • Brake pads appear unevenly worn
  • You hear any unusual noises during braking
  • Your vehicle pulls to one side when braking
  • The brake pedal feels spongy or travels to the floor

As an ASE certified shop serving Lowell and surrounding Arkansas communities, we've built our reputation on honest brake assessments and fair pricing. We'll never recommend unnecessary services just the repairs needed to keep you safe.

Brake Pad Replacement: What Lowell Drivers Should Expect

Quality brake pad replacement involves more than swapping old pads for new ones. At Milestone Auto Repair, our process includes:

  • Inspecting rotors for scoring, warping, or excessive wear
  • Checking brake fluid condition and levels
  • Testing brake caliper operation
  • Examining brake lines for leaks or damage
  • Road testing to ensure proper brake performance

Maintaining Your Brakes Between Services

Regular brake maintenance extends pad life and prevents costly repairs:

Avoid Aggressive Braking: Gradual, controlled stops generate less heat and reduce pad wear.

Don't Ride Your Brakes: Constant light pressure overheats brake components and accelerates wear.

Regular Brake Fluid Changes: Contaminated brake fluid can damage internal brake components.

Conclusion: Your Safety Is Worth the Investment

After servicing thousands of brake systems in Lowell, I've learned that proactive brake maintenance saves money and lives. A simple visual inspection every few months can alert you to potential problems before they become expensive repairs.

Remember, brakes are your vehicle's most critical safety system. When in doubt, have them professionally inspected. At Milestone Auto Repair, we're committed to keeping Northwest Arkansas drivers safe with honest service and expert brake repairs.

About Milestone Auto Repair

Located in Lowell, Arkansas, Milestone Auto Repair has served Northwest Arkansas drivers for over a decade. Our ASE certified technicians specialize in brake services, engine diagnostics, and comprehensive automotive repair. We're proud to be your trusted automotive partner, providing honest service and expert repairs for all makes and models.

Schedule your brake inspection today by calling (479) 389-8471 or visiting us at 609 Bloomington St, Lowell AR 72745, Lowell, AR.