Keep in mind, the body's will have slight variations after being hung- not all trucks will be the same. What I did, was measure the rocker panel (body panel under the doors) and leveled it. I had a 1 3/4 inch rake in my truck, from front to back. After leveling the rocker panel I ended up with a 1/2 inch rake, which I can live with. If I had leveled the wheel wells, my rockers would be going slightly up hill. I read where a lot of people say to use a 2" kit but I would bet a lot of those trucks are going slightly uphill. I ended up using a 1" kit (5/8" spacer). Sadly I don't remember the brand of the kit that was used on the front. Sorry.
I have factory 18's on my 2018 truck. I usually run 35 psi cold and notice a 3-4 psi rise after driving in the Summer. Likewise, I've only seen a 1-2 psi rise in pressure so far this Fall season in Ga. the tires run smooth and have even wear so far.
I took the lower part off of mine and like the look, as it doesn't look so low to the ground. I think it was about 15 screws. So far as the damage - my son did something similar to his 07. We just added a fender washer under the plastic and reattached it. If necessary, you may need to use a small bolt through the washer.
I have 2018 Silverado crew cab 4wd. I had a 1 3/4" rake measuring the wheel well openings but only a 1" rake measuring the rocker panels. So I installed a 1" level kit to make the rocker panel level. Now I have a 1/2" rake between the wheel wells ( barely noticeable) but the rocker panels are level and not going uphill. Not all bodies are hung the same so you may need something different from other people.
I hear a lot of people say that it's attached with two sided tape . Mine wasn't. Mine was attached with a mastic-type adhesive. i would be cautious using a heat gun to soften the adhesive unless someone on here has done it with success (without damaging the paint/clear coat)
This is a true statement on the 2014-18's, can't say for the 19's. Most people measure the wheel well openings, which may cause that look, as they may not be cut the same. I measured the rocker panel and leveled it. I ended up with 1/2" rake out of the factory 1 3/4 stock rake. I can live with that
Bought a 2018 Silverado Z71 All Star in November. The first thing I did was remove the lower front air dam Removed the back bowtie and blacked out the front one Next, tinted the front two windows to match the back doors. Added a drivers side assist handle. Added a bed mat Lifted the rocker panel (1") to level which left me with a 1/2" rake Added a diamond plate toolbox painted Summit White to match the truck Removed factory running boards and added AMP powersteps Last thing done was a 5% strip across the top of the windshield. On the front end, I either want to add the LTZ chrome strips to the grill or remove the lower chrome mustache Then comes the big ticket items of wheels and tires.
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