SSchup

Why don't you just call CST and ask them. They have been very helpful when I've contacted them with any questions.

How much trimming did you have to do to run 20x12's?

I would remove them, but that is me.[emoji39] Sent from my iPhone using Tapatalk

CST 4.5” on 20x10’s 305/55/20 Nitto Ridge Grapplers, 33.25” diameter by Nitto’s specs. Sent from my iPhone using Tapatalk

My 2018 Silverado. Sent from my iPhone using Tapatalk

Those are Ridge Grapplers not Trail Grapplers, big difference in road noise over the Trail Grapplers.

New Level was the cheapest when I bought mine. I ended up buying mine from Performance Lifts even though they were a tad more. I bought my 4" CST lift for my 2013 GMC from them and there customer service was always great. Decided to order my 4 1/2" for my 2018 from them from past experience.

I really don't see the big deal with just leveling to run a little larger tire. A 2" level kit will allow you to run a 33" tire. Depending on the tire if it is E rated, sure it will ride a little stiffer. Worst case scenario, you may need to go to an aftermarket control arm. You can buy a Readylift 2 1/4" level kit with uca's for under $500.00, and not worry about rubbing on the uca's. Still a hell of a lot cheaper then doing a full suspension lift. I'm sure many people are not interested in spending the additional money and cutting up a brand new truck to get an additional 2 1/2"- 3" of lift. I ran a 2 1/2" level on my 2018 for 6 months with a 33 1/2" E rated tire and it rode just fine. My truck is now lifted 4 1/2", but that was my original plan, just needed the time off from work to install the lift. Obviously it rides better with the lift, but that's because I spent additional money for full coilovers. So hardly a comparison to just leveling.

I'm interested in hearing any feedback from anyone who has that JL sub under the center console. I was looking at it myself but would like to hear from someone who has done it

They were, last was the 2013'S

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Why not look thru the leveling kit thread in this section.

Yeah maybe with a 305/50/20, since it is only a 32" tire.

You could probably get away with 20x10"s with a 285/55/20. Pretty sure you wont clear with a 33", I'm running a 4 1/2" lift with 20x10's and a 305/55/20 and I don't have a lot of room for much more. Spacers would just push the wheel out farther and create more offset, so no. The offset on the wider rims is what causes the clearance issues.