Trim height is a predetermined measurement relating to vehicle ride height. Incorrect trim heights can cause bottoming out over bumps, damage to the suspension components and symptoms similar to wheel alignment problems. Check the trim heights when diagnosing suspension concerns and before checking the wheel alignment.
Perform the following before measuring the trim heights:
The Z height measurement determines the proper ride height for the front end of the vehicle. Vehicles equipped with torsion bars use an adjusting arm to adjust the Z height. Vehicles without torsion bars have no adjustment and could require replacement of suspension components.
All dimensions are measured vertical to the ground. Cross vehicle Z
heights
should be within 12 mm (0.47 in) for all vehicles except
pickups
with options ZQ8 and V4A to be considered correct. Pickups with options
ZQ8 and V4A
should be 0 mm to be considered correct.Important
Drive Type/Model |
Service Allowed |
Service Preferred |
---|---|---|
Z Trim Height |
||
|
67-79 mm (2.6-3.1 in) |
73 mm (2.9 in) |
|
64 mm (2.5 in) |
64 mm (2.5 in) |
|
35-47 mm (1.4-1.9 in) |
41 mm (1.6 in) |
|
116-128 mm (4.6-5 in) |
122 mm (4.8 in) |
|
116-131 mm (4.6-5.2 in) |
123.5 mm (4.9 in) |
D Trim Height |
||
|
130.08-148.11 mm (5.1-5.8 in) |
139.1 mm (5.4 in) |
|
98.4-116.4 mm (3.9-4.6 in) |
107.4 mm (4.3 in) |
|
130.7-161.5 mm (5.1-6.4 in) |
146.1 mm (5.8 in) |
|
122 mm (4.8 in) |
122 mm (4.8 in) |
The D height measurement determines the proper ride height for the rear end of the vehicle. There is no adjustment procedure. Repair may require replacement of suspension components.
All dimensions are measured vertical to the ground. Cross vehicle D
heights
should be within 18 mm (0.71 in) for utilities and
30 mm (1.18 in)
for pickups without options ZQ8 and V4A to be considered correct.
Pickups with options
ZQ8 and V4A should be 0 mm to be considered correctImportant
Measure the metal to metal contact points of the rear axle to the
frame on the
inboard side of the leaf springs.Important