What size rotors are on a TLX Type S?

Front rotors are 14.7 inches in diameter and rear rotors are 13.0 inches in diameter on the TLX Type S. This sizing is part of Acura’s Brembo-equipped performance package and has been consistent across the Type S lineup since its return in 2021.

Rotor sizing for the TLX Type S

The Type S uses a dedicated high-performance braking setup designed to handle the vehicle’s 355 horsepower and sustained high-speed braking. The following dimensions describe the standard US-market configuration for the Type S model line.

• Front rotors: 14.7 inches (374 mm) in diameter


• Rear rotors: 13.0 inches (330 mm) in diameter

These sizes are paired with performance-oriented brake hardware to provide strong stopping power and fade resistance while maintaining compatibility with the stock wheel packages.

Brake hardware and performance

Calipers and rotor pairing

The TLX Type S employs Brembo brake hardware with a front six-piston fixed caliper arrangement and a rear two-piston caliper setup. This configuration is intended to deliver balanced, fade-resistant braking under spirited driving and track-influenced conditions, while preserving daily drivability.

Practical considerations for owners

When shopping for wheels or discussing aftermarket options, note that the rotor diameter and caliper hardware influence clearance. Always verify fitment for your specific wheel and tire combination, and consider the braking system’s heat management when pushing the car in hilly or hot-weather conditions.

What this means for performance and ownership

The 14.7-inch front and 13.0-inch rear rotor sizes, combined with the Brembo brake setup, are part of what gives the TLX Type S its confident high-speed braking and track-capable braking feel without compromising everyday usability. The sizing helps manage heat during repeated stops and supports consistent pedal feel across a range of driving scenarios.

Summary

In short, the TLX Type S uses 14.7-inch front rotors and 13.0-inch rear rotors, paired with Brembo front six-piston and rear two-piston calipers. This configuration is designed to deliver strong, durable braking for both daily driving and more demanding driving conditions, and it remains the standard specification across model years for the Type S lineup.

Does the TLX type S have Brembo brakes?

For Acura's most focused performance line, the Type S, massive yellow 6-piston Brembo® front calipers grip large-diameter 15.3-in ventilated front discs that are engineered to fight fade in aggressive use.

Are 203mm rotors better than 180mm?

Rotor size affects your bike's braking efficiency and safety. Larger rotors like the 203mm provide more stopping power and better heat management, which is important for heavier bikes or aggressive riding. Smaller rotors, such as the 180mm, are lighter and sufficient for most riders.

How do I know what size my rotors are?

To measure a rotor's size, find its diameter by measuring across its center with a tape measure or caliper, and its thickness by using a micrometer or caliper at multiple points on the friction surface. For the most accurate measurements, remove the rotor from the vehicle first. 
This video demonstrates how to measure the rotor's diameter without removing it: 33sSouthSideMobileBrakeService.YouTube · Feb 18, 2025
Measuring rotor diameter

• Method 1: Measure with the wheel removed 
  • Use a tape measure or a large caliper. 
  • Measure from one outer edge of the rotor straight across to the opposite outer edge, ensuring the measurement goes through the exact center. 
• Method 2: Measure with the wheel on
  • Use a large caliper or a method using a paper template with a hole for the hub to make an imprint on the paper, then measure the imprint. 
  • Another method is to use two magnetic markers attached to the rotor's surface and a tape measure to measure the distance between the magnets. 

Measuring rotor thickness

• Method 1: Measure with the wheel removed 
  • Use a micrometer or a caliper. 
  • Measure the thickness at several different points along the friction material of the rotor to account for wear. 
• Method 2: Measure with the wheel on
  • Use a small caliper to measure the thickness in a few spots on the rotor's surface. 

Other important measurements

• Hat height: With the rotor upside down on a flat surface, measure the distance from the base to the start of the friction material. 
• Runout: Use a dial indicator to check for runout, which is an indicator of rotor wobble. 

You can watch this video to learn how to measure brake rotor thickness: 58sDriver's TherapyYouTube · Jul 10, 2025

What size are the rims on the Acura TLX Type S?

The standard wheel size for the Acura TLX Type S is 20x9 inches with a 5x120mm bolt pattern and a +50mm offset. The corresponding factory tire size is 255/35R20.
 

• Wheel Dimensions: 20 inches in diameter and 9 inches wide.
• Bolt Pattern: 5x120mm.
• Offset: +50mm.
• Tire Size: 255/35R20.