2017 Volvo VNL Brake Pad & Rotor Specifications

As an ASE-certified master technician, I frequently work on Class 8 heavy-duty trucks like the 2017 Volvo VNL. Unlike passenger cars, the 2017 Volvo VNL relies on a robust full air brake system. However, the industry has largely shifted from traditional drum brakes to Air Disc Brakes (ADB) for better stopping power and fade resistance. The majority of 2017 Volvo VNL trucks equipped with disc brakes use the industry-standard Bendix ADB22X or Meritor EX+ systems.

Because we are dealing with a heavy-duty air brake system, standard hydraulic specs (like DOT brake fluid) do not apply, but maintaining the massive rotors and pads is just as critical. Below are the standard specifications for a 2017 Volvo VNL equipped with air disc brakes. Always verify your specific axle and brake package with your dealer using your VIN, as fleet orders vary significantly.

Quick reference

Note: The Bendix ADB22X system generally uses the same pad shape (like CV1369) on all axles. Always verify part numbers with your dealer or parts supplier.

How to choose pads

Selecting brake pads for a Class 8 tractor like the 2017 Volvo VNL is very different from choosing passenger car brakes. You aren't choosing between standard ceramic or semi-metallic formulations; instead, you are choosing based on the Gross Vehicle Weight Rating (GVWR) and application.

1. OEM / Standard Highway Pads: These are formulated for over-the-road (OTR) long-haul trucks. They offer a balance of longevity, low rotor wear, and consistent stopping power for trucks that spend most of their time cruising on the interstate.
2. Severe-Duty / Vocational Pads: If your VNL is used for regional hauling, heavy-haul applications, or navigates mountainous terrain frequently, severe-duty friction materials are required. These are built to withstand much higher operating temperatures without glazing or fading.
3. Aftermarket Equivalents: Brands like Bendix, Meritor, Haldex, and Wagner dominate the heavy-duty space. While automotive brands like Power Stop or Bosch make some commercial vehicle (CV) pads, always stick to verified heavy-duty commercial suppliers.

Typical service life

Because air disc brakes run cooler and have better mechanics than traditional drum brakes, pad life on a Volvo VNL can be exceptionally long, but it depends heavily on the route.

For a long-haul highway VNL, it is not uncommon to see air disc brake pads last anywhere from 250,000 to 400,000 miles. However, for regional hauling or heavy stop-and-go traffic, that number can drop to 150,000 miles or less.

Recommended Pad-Slap Interval: "Pad-slapping" (replacing just the pads without replacing the rotors) is quite common in the heavy-duty industry, provided the rotors are still well above the 37mm minimum discard thickness and show no signs of deep heat-checking or cracking. Rotors can frequently outlast two or three sets of brake pads.

Common brake issues for this generation

The 2017 Volvo VNL is a reliable workhorse, but its air brake system requires diligent maintenance to prevent commercial vehicle inspection failures (DOT violations).

• Seized Caliper Guide Pins: Air disc brakes are exposed to harsh road salts and debris. If the rubber boots on the caliper guide pins tear, moisture enters, causing the pins to seize. This leads to uneven pad wear and dragging brakes.
• Cracked Rotors (Heat Checking): While surface heat-checking (tiny spiderweb cracks) is normal on HD rotors, cracks that extend to the outer edge of the rotor or run deep into the ventilation channels require immediate rotor replacement.
• Brake Chamber Failure: The air chambers bolted to the calipers can develop internal diaphragm leaks, leading to a loss of braking force or air system pressure drops.

Brake job cost estimate

Repairing air disc brakes on a commercial truck is a heavy-duty job with a heavy-duty price tag, though it is faster to service than old-school drum brakes.

• Pads Only (Per Axle): Heavy-duty brake pads typically cost between $150 and $250 per axle set. With labor (usually 1 to 2 hours per axle), a simple pad replacement will run about $350 to $500 per axle.
• Pads and Rotors (Per Axle): ADB rotors are heavy and expensive, usually costing $200 to $350 each. Factoring in the additional labor to remove the hubs, a complete pad and rotor replacement will cost between $900 and $1,400 per axle.

Don't leave your commercial fleet's safety to chance or risk a DOT out-of-service violation. Find a trusted brake shop on Repairius.