I have a 2014 Silverado LTZ with a Rough Country leveling kit only. My question I, I want to put rims and tires on it but the truck comes with 20 inch rims. I like the beefier look of the 18 inch wheels better than the 20's, they don't look as good due to rubber amount shown. twenty's look like low profile compared to the eighteens. Are there any issues with the computer or suspension that I will be dealing with if I go to the 18" wheel package instead of the 20" package. Any suggestions or advice is greatly appreciated.

Anthony

 

As long as the circumference of your tires is equivalent there should be no factors of risk at all.
Just go to one of the tire websites that show you equivalent options and you should easily be able to determine what size tire to put on an 18" wheel to match the circumference of the stock 20" setup.