This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Motorcycle Tire/Road Friction
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 12, 2010 by SAE International in United States
Annotation ability available
The straight-line tire/road friction coefficients of three motorcycle tires designed for high-performance or sports motorcycles have been measured and compared with a representative ordinary car tire. Both peak and locked-wheel friction was measured on two different surfaces (hot rolled asphalt and stone mastic asphalt), dry and wet, at speeds between 32 and 100 km/h. Unexpectedly, a substantial difference between the friction of the car tire and the motorcycle tires was not found, and while the car tire did tend to deliver the lowest friction of the four, this was, with one exception, no more than the variation among the three motorcycle tires. Generally, on the dry surfaces peak friction coefficients of around 1.2 were found, with locked wheel coefficients of around 0.7-0.9. The exception was in the measurement of the peak friction on dry hot rolled asphalt, where the coefficient of friction of the car tire was about 0.2 less than that of the motorcycle tires. The same difference was not found in the locked-wheel friction on the dry hot rolled asphalt.
Some observations are also made on the reduction in the coefficient of friction when the tires wear through to the cords of the carcass, the amount being noticeable but only in the region of 0.2.
|Technical Paper||Comparison of Motorcycle Braking System Effectiveness|
|Technical Paper||Analysis of Motorcycle Braking Performance and Associated Braking Marks|
|Technical Paper||The Calculation of Motorcycle Speeds from Sliding Distances|
CitationLambourn, R. and Wesley, A., "Motorcycle Tire/Road Friction," SAE Technical Paper 2010-01-0054, 2010, https://doi.org/10.4271/2010-01-0054.
- Fricke, L. B. Riley, W. W. “Reconstruction of Motorcycle Traffic Accidents. Topic 874 of, Fricke LB, “Traffic Accident Investigation Manual” Evanston, Ill Northwestern University Traffic Institute 1990 74 11
- Lambourn, R. F. “Motorcycle Braking Tests” Impact: The Journal of the Institute of Traffic Accident Investigators 9 1 18 19 2000
- Walker, C. D. “Motorcycle tyre adhesion” 1993
- Hugemann, W. Lange, F. “Braking performance of motorcyclists” Impact: The Journal of the Institute of Traffic Accident Investigators 10 1 16 22 2001
- Green, D. “A Comparison of Stopping Distances Performance for Motorcycles equipped with ABS, CBS and Conventional Hydraulic Brake Systems” International Motorcycle Safety Conference Long Beach, California 2006
- Frank, T.A. Smith, J.W. Hansen, D.C. Werner, S.M. “Motorcycle Rider Trajectory in Pitch-Over Brake Applications and Impact,” SAE Technical Paper 2008-01-0164 2008
- “Standard Test Method for Skid Resistance of Paved Surfaces Using a Full-Scale Tire” http://www.astm.org/Standards
- Roe, P. G. “The Early Life Skid Resistance of Road Surfaces” European Association for Accident Research and Analysis (EVU): Proc. 17th EVU Conference Nice 2008
- Bridgestone “Passion for Excellence” http://www.bridgestone.eu
- Tyres Pirelli http://www.pirelli.co.uk
- Grover, C. Walter, L. Smith, T.L. Lambourn, R. F. “Braking and Manoeuvring Characteristics of Incorrectly Inflated Low-Profile and Run-Flat Tyres” European Association for Accident Research and Analysis (EVU): Proc. 16th EVU Conference Kraków 2007