Tow/haul mode is a function within the vehicle'ssoftware/calibration that optimizes transmission gear selection foroperation during towing or with heavy loads. This optimizationincludes improving acceleration performance during launches,reducing shift busyness, assisting brake performance and speedcontrol during engine braking situations, and improving vehiclespeed control while requiring less throttle pedal activity.
In general, tow/haul mode maintains lower gears longer andincreases shift pressures. It is designed to be most effective whenthe vehicle and trailer combined weight is at least 75% of thevehicle's Gross Combined Weight Rating-(GCWR). Operationof tow/haul in a lightly loaded or non-loaded vehiclewill not cause damage. However, there is no benefit to theselection of tow/haul when the vehicle is unloaded, and use oftow/haul mode during unloaded driving conditions will decrease fueleconomy and may generate shift feel concerns.
Scrub Radius Description Wheels
Ideally, the scrub radius is as small as possible. Normally,the SAI angle and the centerline of the tire and the wheelintersect below the road surface, causing a positive scrub radius.With struts, the SAI angle is much larger than the long arm/shortarm type of suspension. This allows the SAI angle t ...