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Standard

BRAKE DISC AND DRUM THERMOCOUPLE INSTALLATION
1972-08-01
HISTORICAL
J79_197208
This SAE Recommended Practice describes two methods for installing thermocouples in automotive brake discs or drums for the purpose of indicating bulk temperature during inertia dynamometer and vehicle road tests.
Standard

Brake Pads, Lining, Disc, and Drum Wear Measurements
2024-04-04
WIP
J2986
This Recommended Practice provides a common method to measure wear of friction materials (brake pad assemblies and brake shoes) and their mating parts (brake disc or brake drum). These wear measurements apply to brakes fitted on passenger cars and light trucks up to 4536 kg of Gross Vehicle Weight Rating under the Federal Motor Vehicle Safety Standard (FMVSS), or vehicles category M1 (passenger cars up to nine occupants, including the driver) under the European Community’s ECE Regulations.
Standard

Brake Pads, Lining, Disc, and Drum Wear Measurements
2019-01-07
CURRENT
J2986_201901
This Recommended Practice provides a common method to measure wear of friction materials (brake pad assemblies and brake shoes) and their mating parts (brake disc or brake drum). These wear measurements apply to brakes fitted on passenger cars and light trucks up to 4536 kg of Gross Vehicle Weight Rating under the Federal Motor Vehicle Safety Standard (FMVSS), or vehicles category M1 (passenger cars up to nine occupants, including the driver) under the European Community’s ECE Regulations.
Standard

Brake Rotor Thermal Cracking Procedure for Vehicles Below 4 540 kg GVWR
2023-12-19
WIP
J2928
This recommended practice is derived from common test sequences used within the industry. This procedure applies to all on-road passenger cars and light trucks up to 4 540 kg of GVWR. This recommended practice does not address other aspects such as performance, NVH, and durability. Test results from this recommended practice should be combined with other measurements and dynamometer tests (or vehicle-level tests), and acceptance criteria to validate a given design or configuration.
Standard

Brake Rotor Thermal Cracking Procedure for Vehicles Below 4 540 kg GVWR
2018-05-16
CURRENT
J2928_201805
This recommended practice is derived from common test sequences used within the industry. This procedure applies to all on-road passenger cars and light trucks up to 4 540 kg of GVWR. This recommended practice does not address other aspects such as performance, NVH, and durability. Test results from this recommended practice should be combined with other measurements and dynamometer tests (or vehicle-level tests), and acceptance criteria to validate a given design or configuration.
Standard

Brake Rotor Thermal Cracking Procedure for Vehicles Below 4 540 kg GVWR
2012-07-03
HISTORICAL
J2928_201207
This recommended practice is derived from common test sequences used within the industry. This procedure applies to all on-road passenger cars and light trucks up to 4 540 kg of GVWR. This recommended practice does not address other aspects such as performance, NVH, and durability. Test results from this recommended practice should be combined with other measurements and dynamometer tests (or vehicle-level tests), and acceptance criteria to validate a given design or configuration.
Standard

DYNAMOMETER EFFECTIVENESS CHARACTERIZATION TEST FOR PASSENGER CAR AND LIGHT TRUCK CALIPER DISC BRAKE FRICTION MATERIALS
1995-04-01
HISTORICAL
J1652_199504
This SAE Recommended Practice establishes an inertia dynamometer test procedure, using an exemplar caliper disc brake, to characterize the effectiveness of disc brake friction materials for passenger cars and light-duty trucks, up to and including 2700 kg (5954 lb) GVW. SAE J1652 provides a method of characterizing friction material effectiveness on a full disc brake, using test conditions that approximate those for U.S. mandated new vehicle brake tests.
Standard

Disc Brake Dynamometer Squeal Noise Matrix
2001-05-14
HISTORICAL
J2521_200105
This procedure is applicable to high frequency squeal type noise occurrences for passenger car and light truck type vehicles that are used under conventional operating conditions. The procedure does not encompass the consequences associated with changes in environment related to temperature and humidity variations.
Standard

Disc Brake Dynamometer Squeal Noise Matrix
2003-06-03
HISTORICAL
J2521_200306
This procedure is applicable to high frequency squeal type noise occurrences for passenger car and light truck type vehicles that are used under conventional operating conditions. The procedure does not encompass the consequences associate with changes in environment relate to temperature and humidity variations.
Standard

Dynamometer Effectiveness Characterization Test for Passenger Car and Light Truck Brake Friction Products
1999-08-30
HISTORICAL
J2430_199908
This SAE Recommended Practice establishes an inertia dynamometer test procedure, using exemplar caliper disc or drum brakes, to characterize the effectiveness of brake friction products for passenger cars and light trucks, up to and including 3500 kg GVW. SAE J2430 provides a method of characterizing friction material effectiveness, using vehicle specific brake hardware and test conditions that approximate those for U.S. mandated new vehicle brake tests.
Standard

Dynamometer Effectiveness Characterization Test for Passenger Car and Light Truck Brake Friction Products
2012-11-19
CURRENT
J2430_201211
Ballot to Brake Effectiveness and Dynamometer Effectiveness - 11/19/98 Results of ballot: Brake Effectiveness - A-6, D-2, W-1, NR-2 Dynamometer Test Code - A-5, D-0, W-0, NR-2 Jim Trainor will send letter to the two people who disapproved and send a copy of the letter to SAE - 7/7/1999 Transmittal sent to pubs - 8/30/1999 Pre-print sent to sponsor - 10/27/1999 Signed copy sent to pubs - 11/9/1999 Published copy (AUG99) received - 01/14/2000
Standard

Dynamometer Global Brake Effectiveness
2003-06-11
HISTORICAL
J2522_200306
This SAE Recommended Practice defines an Inertia Dynamometer Test procedure that assesses the effectiveness behavior of a friction material with regard to pressure, temperature and speed for motor vehicles fitted with hydraulic brake actuation.
Standard

Dynamometer Global Brake Effectiveness
2014-09-09
HISTORICAL
J2522_201409
This SAE Recommended Practice defines an Inertia Dynamometer Test procedure that assesses the effectiveness behavior of a friction material with regard to pressure, temperature and speed for motor vehicles fitted with hydraulic brake actuation.
Standard

Dynamometer Global Brake Effectiveness
2013-01-21
HISTORICAL
J2522_201301
This SAE Recommended Practice defines an Inertia Dynamometer Test procedure that assesses the effectiveness behavior of a friction material with regard to pressure, temperature and speed for motor vehicles fitted with hydraulic brake actuation.
Standard

FMVSS 135 Inertia Dynamometer Test Procedure
2007-12-13
HISTORICAL
J2784_200712
This Recommended Practice is derived from the Federal Motor Vehicle Safety Standard 135 vehicle test protocol as a single-ended inertia-dynamometer test procedure. It measures brake output, friction material effectiveness, and corner performance in a controlled and repeatable environment. The test procedure also includes optional sections for parking brake output performance for rear brakes. It is applicable to brake corners from vehicles covered by the FMVSS 135 when using the appropriate brake hardware and test parameters. This procedure is applicable to all passenger cars and light trucks up to 3500 kg of GVWR.
Standard

FMVSS Inertia Dynamometer Test Procedure for Vehicles Below 4540 kg GVWR
2021-01-27
CURRENT
J2784_202101
This document derives from the Federal Motor Vehicle Safety Standards 105 and 135 vehicle test protocols as single-ended inertia-dynamometer test procedures. The test sequences enable brake output measurement, friction material effectiveness, and corner performance in a controlled and repeatable environment. This SAE Recommended Practice (RP) also includes optional sections for parking brake output performance for rear brakes. It applies to brake corners from vehicles covered by the FMVSS 105 and 135 when using the appropriate brake hardware and test parameters. The FMVSS 135 applies to all passenger cars and light trucks up to 3500 kg of GVWR. The FMVSS 105 applies to all passenger cars, multi-purpose vehicles, buses, and trucks above 3500 kg of GVWR. This document does not include testing for school bus applications or vehicles equipped with hydraulic brakes with a GVWR above 4540 kg.
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