On a level surface measure the distance from the center of the control arm pivot bolt to the ground then measure from the bottom side of the steering knuckle to the ground subtract the measurements.
Roof height of leveled 03 silverado.
Or budget lowering where you put shackles in the back to lower the rear 2 to 2 1 2 to match the front.
The tire height from the rim to the top of the tread was 7 5 inches twice plus the rim size came to a total of 18 7 5 7 5 33 inches with a section width of 11 6 inches.
A leveling kit refers to adding lift only to the front suspension usually between one to three inches which levels out the front end with the height of the bed.
Leveling kit lift height results feb 20 2012 12 22pm installed the 1 alumn.
This yielded me diagonal measurement of 35 in.
Spacer on the lower strut on mine it raised mine 2 excatly it now sets level i have drove it about 200 miles after the front end alighment with no sagging so far.
Because silverado 1500s were designed to haul typical loads of 400 to 600 pounds 181 to 272 kg and loads of up to 1 000 pounds 454 kg the rear suspension comes pre.
Hope this helps ya out.
A leveling kit will bring the front end up about 2 to 2 1 2 to match the rear end height.
The aftermarket tires that i put on my silverado were 295 65 r18.