The Moabs are 10 lbs. heavier per wheel than a standard 16" alloy. That's pretty significant. Imaging taking a 10 lb. dumbell and strapping it to your factory wheels...that's what it will be like with the Moabs. Again, power and efficiency is going to take a hit.
No one is arguing that the Moab wheels look awesome. They rock on just about any Jeep.
'92 YJ - heavily modded
'96 ZJ - heavily modded
'05 KJ CRD Limited - 370 lb./ft. from a 4-cylinder and trail ready. Pure awesomeness.
'11 Mango Tango JKU Sport - Mods
'12 Dozer JKU Sport S - 6-speed - ACE rock rails - Max Tow package - Daystar spacers - 33x12.50 Duratracs
I know here in vegas that is a screaming deal. They seem to go for around 5-800 here without the tires. Yes they are a little heavier but not that bad. I swapped my limited rims to these and love the look. Have not seen any MPG drop either but honest, I have so much other crap on it an extra weight on the wheel is the least of my concerns
Try the ARB bumper, winch, roughly 4-500 pound rear bumper, lol along with gas cans and other goodies, lol. Not to mention my fat rear.