Mixing Tire Sizes

Newer ABS and EBS systems support different tire size, but you need to reprogram ABS control unit.

Everething depend on ABS unit number. Wabco ABS units got this feature in end of 90s, Bosch/Knorr/Bendix in early 2000s. So post control unit #. Mercedes included small table with tire size in its diagnostic program and I use this table when I do tire size reprogramming. Pay attention that pole ring may differ with 80, 100 and 120 pulses per revolution, but on class 8 trucks 100 p/rev rings are used generally.



Never use different tires on drive axes, the only axe may differ - steer axe.

 

Can i use 11R 22.5 on the 2nd axle and 24.5 low pro on the 3rd axle ?