Curb Height Measurement (Hd)

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

The wheel alignment is to be checked and all alignment adjustments made with the vehicle at its required curb height specification.

Vehicle height is to be checked with the vehicle on a flat, level surface, preferably a vehicle alignment rack. The tires are to be inflated to the recommended pressure. All tires are to be the same size as standard equipment. Vehicle height is checked with the fuel tank full of fuel, and no passenger or luggage compartment load.

Inspect the vehicle for bent or weak suspension components. Compare the parts tag on the suspect coil spring(s) to the parts book and the vehicle sales code, checking for a match. Once removed from the vehicle, compare the coil spring height to a correct new or known good coil spring. The heights should vary if the suspect spring is weak.

Fig 1: 4X2 Front Curb Height Measurement

Courtesy of CHRYSLER GROUP, LLC

Front 4X2 On each side of the vehicle, measure the distance from the top of the jounce bumper flange (2) to the bottom of the frame rail (1).

Fig 2: 4X4 Front Curb Height Measurement
Courtesy of CHRYSLER GROUP, LLC
Front 4X4 On each side of the vehicle, measure the distance from the top of the axle (2) to the bottom of the jounce bumper flange (1).

Fig 3: Rear Curb Height Measurement
Courtesy of CHRYSLER GROUP, LLC
Rear ALL - On each side of the vehicle, measure the distance at the top of the axle tube (2) to the bottom of the frame rail (1).
Compare the measurements to the specifications listed in the following Curb Height Specifications chart.

FRONT CURB HEIGHT SPECIFICATIONS

MODEL	FRONT
4X2 HD NOTE: When the vehicle has been up-fitted and ride height has been altered, vehicle toe must be reset. Refer to WHEEL ALIGNMENT, STANDARD PROCEDURE .	75 mm ± 10 mm
	3.0 in. ± 0.40 in
4X4 HD NOTE: When the vehicle has been up-fitted and ride height has been altered, vehicle toe must be reset. Refer to WHEEL ALIGNMENT, STANDARD PROCEDURE .	102 mm ± 10 mm
	4.0 in. ± 0.40 in
POWERWAGON	137 mm ± 10 mm
POWERWAGON	5.40 in. ± 0.40 in
4500/5500 Bare Frame Rails NOTE: There are optional front coil springs available, which can raise front ride height 8-16mm (0.30-0.60 in) depending on wheelbase and rear bed configurations. NOTE: When the vehicle has been up-fitted and ride height has been altered, vehicle toe must be reset. Refer to WHEEL ALIGNMENT, STANDARD PROCEDURE .	111 mm ± 10 mm
	4.40 in. ± 0.40 in

REAR CURB HEIGHT SPECIFICATIONS

MODEL	REAR
4x4 2500 10.5 AXLE	200.4
4x4 2500 10.5 AXLE	7.88 in
4x2 2500 10.5 AXLE	167.2 mm
4x2 2500 10.5 AXLE	6.58 in
4x4 2500/3500 SRW 11.5 AXLE	200.9 mm
4x4 2500/3500 SRW 11.5 AXLE	7.90 in
4x2 2500/3500 SRW 11.5 AXLE	167.8 mm
4x2 2500/3500 SRW 11.5 AXLE	6.60 in
4x4 3500 DRW 11.5 AXLE	203 mm
4x4 3500 DRW 11.5 AXLE	7.99 in
4x2 3500 DRW 11.5 AXLE	173.3 mm
4x2 3500 DRW 11.5 AXLE	6.82 in
4500/5500 Bare Frame Rails	174 mm ± 10 mm
4500/5500 Bare Frame Rails	6.9 in ± 10 in