Measuring the P and R Dimension

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Measuring P And R Dimension

Courtesy of GENERAL MOTORS COMPANY

Measurement Definitions

P Height: The vertical distance from the center of the front wheel to the top of the wheel opening.

R Height: The vertical distance from the center of the rear wheel to the top of the wheel opening.

Use the following procedures to measure the P and R dimensions:

NOTE:

Measure from the center of the wheel well opening to the ground.
The left and right P and R height differences should be no more than 15 mm (0.60 in).

Push the front bumper down a minimum of 38 mm (1.59 in) and release. Perform this step three times.
Measure and record the trim height per the "Measurement Definitions" above.
Lift the bumper up a minimum of 38 mm (1.59 in) and release. Perform this step three times.
Measure and record the trim height per the "Measurement Definitions" above.
The true P height measurement is the average of the measurements taken in step 2 and 4. Refer to Trim Height Specifications (USA) Trim Height Specifications (Canada)
Repeat the above steps at the rear of the vehicle for the R heights.