Light Truck Tire Traction Properties and Their Effect on Braking Performance

741137

02/01/1974

Event
National Truck Meeting and Exposition
Authors Abstract
Content
Tire traction test data has shown empirically that peak skid number dry pavement traction performance of bias ply tires is inversely proportional to the dynamic instantaneous tire load and is a function of inflation pressure. A modification to classical braking theory, which assumes constant traction coefficients at the tire-road interface, is therefore required to obtain maximum theoretical unlocked wheel vehicle deceleration. Optimum brake proportioning between front and rear axles is dictated by the maximum braking force which, with respect to each axle, can be generated at the tire-road interface. The inclusion of peak traction coefficient normal load sensitivity significantly modifies classical theory and changes the selection of brake force balance required to attain maximum theoretical deceleration capability. The importance of the effects of tire traction load sensitivity on the requirements of FMVSS 105-75 is discussed in this paper.
Meta TagsDetails
DOI
https://doi.org/10.4271/741137
Pages
29
Citation
Bickerstaff, D., and Hartley, G., "Light Truck Tire Traction Properties and Their Effect on Braking Performance," SAE Technical Paper 741137, 1974, https://doi.org/10.4271/741137.
Additional Details
Publisher
Published
Feb 1, 1974
Product Code
741137
Content Type
Technical Paper
Language
English