What size rotors are on a Lexus ls430?
The typical rotor sizes for a Lexus LS430 are front rotors about 327 mm (12.9 inches) in diameter and rear rotors about 312 mm (12.3 inches) in diameter. These dimensions cover the majority of 1999–2006 LS430 models, though a few years or specific brake packages may vary slightly.
Typical rotor sizing for the LS430
The following breakdown reflects the common OEM diameters used on most LS430 configurations. Exact sizes can vary by year, trim level, or aftermarket brake options.
- Front rotors: 327 mm (12.9 inches) in diameter (typical); thickness varies by spec but is around 28–30 mm
- Rear rotors: 312 mm (12.3 inches) in diameter (typical); thickness varies by spec but is around 11–15 mm
These figures represent the standard factory setup for the LS430’s front and rear rotors. Always verify with your exact vehicle’s data if precision is required for parts replacement.
How to verify the exact rotor size on your car
To ensure you purchase the correct parts or measure for maintenance, use these steps to confirm your LS430’s rotor dimensions:
- Consult the owner’s manual or Lexus service information for your exact model year and brake package.
- Inspect the rotor stamping on the rotor face for diameter specifications.
- Measure directly: measure the rotor diameter across the widest point, excluding the hub area.
- Use the VIN to retrieve OEM parts data from Lexus’ catalog or a trusted parts retailer.
- If in doubt, bring the vehicle or rotor part number to a parts counter to confirm a fit.
Accurate rotor sizing helps ensure correct replacement parts and optimum braking performance.
Notes on variations
While the 327 mm front and 312 mm rear layout is typical for most LS430 models, there can be small variations based on regional markets, year-specific updates, or aftermarket brake packages. Always verify against OEM data for your specific vehicle using the VIN or official documentation.
Summary
The Lexus LS430 generally uses front rotors around 327 mm (12.9 inches) in diameter and rear rotors around 312 mm (12.3 inches). Confirm your exact sizes if ordering parts for your particular year, trim, or brake configuration.
What size are the wheels on a 2004 Lexus LS430?
This Factory OEM Lexus rim comes equipped on a 2004-2006 Lexus LS430. This is an aluminum wheel with a diameter of 18" and a width of 7.5". This Lexus LS430 wheel has 5 lug holes and a bolt pattern of 114.3mm.
How do I tell 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 9, 2025
What wheels fit a Lexus LS430?
Best Wheels for Lexus LS430 - A Quick Overview
| Model Name | Starting Price/ea | Available Sizes |
|---|---|---|
| Niche Torsion | $409.18 | 20” |
| Big Baller Brand H177 Z04 | $150.59 | 18” and 20” |
| Konig Heliogram | $181.26 | 15”, 16”, 17”, 18”, and 19” |
| Maxxim Winner | $123.16 | 14”, 15”, 16”, and 17” |
What is the thickness of the front rotors on a LS430?
For the front rotors, the standard thickness is 30.0 mm (1.181 in.) and the minimum thickness is 28.0 mm (1.102 in.). For the rear rotors, the standard thickness is 16.0 mm (0.630 in.)
