A. 5/32” Steer tire depth
B. 3/32” drive and trailer tire tread depth
C. ¾” maximum size of windscreen chips
D. 9/32” brake shoe thickness
E. 2” maximum stroke for short stroke chamber
F. 2.5” maximum stroke for long stroke chamber
G. Keychain hole
*Note: Measurements for A, B & D are set 1/32” greater than the legal requirements to allow driver to take corrective action before the vehicle is out of compliance.