This is a big reason right here, a ton of guys on the jeep forums write about knocking their fenders off from too much flex or not enough lift and adding 35"s. If you have ever owned a jeep your thankful for your crap, cheap fenders.
A company called Bushwhacker makes a type of wide body fender...
Im guilty of the 4 door demographic...my biggest accomplishment with the jeep is getting 3 carseats to fit in the back seat...one has to be rearfacing in the middle though.