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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 324 (Front Suspension) >> Wheel Alignment >> Standard Procedure >> Curb Height Measurement

Curb Height Measurement

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. 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.

Vehicle height is not adjustable. If the measurement is not within specifications, 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.

NOTE: When measuring, the maximum left-to-right differential is not to exceed 12.5 mm (0.5 in.).
Fig 1: Front Curb Height Measurement
GC0079783Courtesy of CHRYSLER LLC
  1. Front - On each side of the vehicle, measure the distance (2) from the frame rail just behind the engine cradle rear mount (1) to the floor or alignment rack/lift runway surface. It may be necessary to measure to the bottom of a straight edge, placed from lift runway to runway, to get an accurate measurement.
    Fig 2: Rear Curb Height Measurement
    GC0079784Courtesy of CHRYSLER LLC
  2. Rear - On each side of the vehicle, measure the distance (2) from the travel limiter (1) attached to the front rear crossmember mount bushing to the floor or alignment rack/lift runway surface. It may be necessary to measure to the bottom of a straight edge, placed from lift runway to runway, to get an accurate measurement.
  3. Compare the measurements to the specifications listed in the following Curb Height Specifications chart.
CURB HEIGHT SPECIFICATIONS

MODEL  FRONT  REAR 
ALL-WHEEL-DRIVE 362 mm ± 10 mm 317 mm ± 10 mm
14.25 in. ± 0.39 in 12.48 in. ± 0.39 in.
REAR-WHEEL-DRIVE 328 mm ± 10 mm 306 mm ± 10 mm
12.91 in. ± 0.39 in 12.05 in. ± 0.39 in.
SRT8 321 mm ± 12 mm 299 mm ± 12 mm
12.64 in. ± 0.47 in 11.77 in. ± 0.47 in.
POLICE PACKAGE (Without Equipment*) 345 mm ± 10 mm 315 mm ± 10 mm
13.58 in. ± 0.39 in 12.40 in. ± 0.39 in
NOTE: Police Package height specifications given are for settled vehicles without additional standard police equipment added. Once police equipment is added, estimated at 520 lbs. (400 lbs. for Magnum with 5.7L), vehicles should meet normal REAR-WHEEL-DRIVE specifications as listed above.