2nd that the mud grapplers are very loud, my tire guy has them on a massive lifted chevy. He's got that classic hum where you hear his truck before you see it.

 

Hey Wayalife - what size wheels is RubiCat running again? They do look sic on the jeep!
Random question - would you recommend against a 20" (anyone for that matter..Just came across
a pretty good deal on CL but without the extra sidewall has me concerned.

 

I would skip the 20" if you plan to plan to use it off road, as you stated it doesn't leave much sidewall. A 17" or no more than 18" setup would be a better choice, and still look great

 

I have Trail Grapplers in 33" and love them. Excellent offroad and VERY quiet, but on start and stop there is a little vibration noise, that's to be expected with the big nubs on the tires. I had to go 18" to get the correct backspacing on the wheels that I wanted and definitely agree not to go any bigger than that. When I upgrade to 35" tires the sidewalls from the 18" wheels will be a little more acceptable.