Effect of mild lift vs. back spacing on-road daily driving?
I've read that putting tires on the 18" Sahara wheels that are any larger than stock (eg: BFG 285/65R18 All-Terrain T/A KO) cause mild rubbing at full turn (for example, while parking), and definitely during off-road use.
I've also read that there are two solutions to rubbing: a small lift or back spacing.
How do lifts and back spacing affect on-road performance/manners/mpg?
Do either of them interfere with the safety/traction technology in the Jeep?
Does anyone have before and after pictures of a small lift on a Sahara Unlimited (with the 18" or upsized wheels/tires)? (And by small I mean nothing larger than 2.5")