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Standard

Wet or Dry Pavement Passenger Car Tire Peak and Locked Wheel Braking Traction

2018-02-15
CURRENT
J345_201802
This SAE Recommended Practice defines the best known techniques for evaluating peak and locked wheel braking traction. It covers an important phase of tire braking traction, namely, the wet or dry pavement straight ahead conditions. However, this is but a small portion of the whole field of tire traction. As test procedures are established for other phases of this complex study, additional supplementary procedures will be written. A discussion of this entire subject is contained in Appendix B to this recommended practice.
Standard

WET OR DRY PAVEMENT PASSENGER CAR TIRE PEAK AND LOCKED WHEEL BRAKING TRACTION

1968-06-01
HISTORICAL
J345_196806
This SAE Recommended Practice defines the best known techniques for evaluating peak and locked wheel braking traction. It covers an important phase of tire braking traction, namely, the wet or dry pavement straight ahead conditions. However, this is but a small portion of the whole field of tire traction. As test procedures are established for other phases of this complex study, additional supplementary procedures will be written. A discussion of this entire subject is contained in Appendix B to this recommended practice.
Standard

WET OR DRY PAVEMENT PASSENGER CAR TIRE PEAK AND LOCKED WHEEL BRAKING TRACTION

1969-03-01
HISTORICAL
J345_196903
This SAE Recommended Practice defines the best known techniques for evaluating peak and locked wheel braking traction. It covers an important phase of tire braking traction, namely, the wet or dry pavement straight ahead conditions. However, this is but a small portion of the whole field of tire traction. As test procedures are established for other phases of this complex study, additional supplementary procedures will be written. A discussion of this entire subject is contained in Appendix B to this recommended practice.
Standard

WET OR DRY PAVEMENT PASSENGER CAR TIRE PEAK AND LOCKED WHEEL BRAKING TRACTION

1969-03-01
HISTORICAL
J345A_196903
This SAE Recommended Practice defines the best known techniques for evaluating peak and locked wheel braking traction. It covers an important phase of tire braking traction, namely, the wet or dry pavement straight ahead conditions. However, this is but a small portion of the whole field of tire traction. As test procedures are established for other phases of this complex study, additional supplementary procedures will be written. A discussion of this entire subject is contained in Appendix B to this recommended practice.
Standard

Tire Pressure Monitoring Systems for Light Duty Highway Vehicles

2019-12-10
CURRENT
J2657_201912
To establish overall performance guidelines, test methods, and minimum performance levels for a TPMS. The system shall visually indicate the tire inflation pressure status. These guidelines include, but are not limited to: a A test methodology for a device which monitors tire inflation, that is located in/on the tire/wheel environment. b Recommended performance guidelines for a TPMS.
Standard

THE MEASUREMENT OF PASSENGER CAR TIRE ROLLING RESISTANCE

1984-06-01
HISTORICAL
J1270_198406
The force, torque, and power methods of measurement are all in common use and should yield the same test results. Effects of steering, traction, and non-steady-state tire operations are excluded from the recommended practice because they are still in the research stage.
Standard

THE MEASUREMENT OF PASSENGER AND LIGHT TRUCK ROLLING RESISTANCE

1985-11-01
HISTORICAL
J1270_198511
The force, torque, and power methods of measurement are all in common use and should yield the same test results. Effects of steering, traction, surface texture, and non-steady-state tire operations are excluded from the Recommended Practice because they are still in the research stage.
Standard

TESTING MACHINES FOR MEASURING THE UNIFORMITY OF PASSENGER CAR TIRES

1969-01-01
HISTORICAL
J332_196901
In recent years the comfort and fatigue of passengers in vehicles has become a major engineering consideration. Among the many factors involved are vibratory and auditory disturbances. Tires participate, among other elements of the vehicle, in exciting vibrations and noises. Furthermore, tires also may generate forces leading to lateral drift of the vehicle. This recommended practice describes the design requirements of equipment for evaluating some of the characteristic excitations of passenger tires causing disturbances in vehicles. The kinds of excitations treated result from nonuniformities in the structure of the tire and have their effect when a vehicle bearing the tire travels on a smooth road. This recommended practice also describes some broad aspects of the use of the equipment and lists precautionary measures that have arisen out of current experience.
Standard

Stepwise Coastdown Methodology for Measuring Tire Rolling Resistance

2017-07-26
CURRENT
J2452_201707
This SAE Recommended Practice is applicable to pneumatic Passenger Car “P” Type, Light Truck Metric, and Light Truck High Flotation tires, or similar tires approved by bodies other than Tire & Rim Association. The methodology is applicable within normal operating ranges of vertical load and inflation pressure, and for velocities between 115 km/h and 15 km/h (71 mph and 9 mph) during a relatively short duration event such as a coastdown. This procedure is applicable only to operation in the free-rolling mode at zero slip and camber angle for ambient temperatures between 20 °C and 28 °C (68 °F and 82 °F) and for surfaces with diameters of 1.2 m (48 in) diameter or greater. Details regarding the equipment, tires, and test methods used specifically for validation of this document are included in Appendix A. Two basic measurement methods covered by this document are as follows:
Standard

Residual Aligning Moment Test

2020-03-11
CURRENT
J1988_202003
This SAE Recommended Practice describes the determination of tire pull force properties for an uninclined tire (SAE J670e) on a laboratory flat surface tire force and moment machine. It is suitable for accurately determining pull forces and residual aligning moments for passenger and light-truck tires. These properties are important determinants of vehicle trim (See section 2.1.2). They describe steady-state, free-rolling pull effects ascribable to tires. The test method described in this document is suitable for comparative evaluation of tires for research and development purposes. The method is also suitable for modeling when followed carefully.
Standard

ROLLING RESISTANCE MEASUREMENT PROCEDURE FOR PASSENGER CAR TIRES

1984-06-01
HISTORICAL
J1269_198406
This recommended practice applies to the laboratory measurement of rolling resistance of pneumatic passenger car tires designed primarily for normal highway service. The procedure applies only to the steady-state operation of free-rolling tires at zero slip and inclination angles; it includes the following three basic methods:
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