I'm running 275/70R18 Nitto Ridge Grapplers with 1.25" spacers on a King 2.5 suspension (should be about 2.5" of total lift) and had much more rubbing than expected (full lock in reverse). Both of the front flaps have now been removed; the rubbing on the rearward flap was very slight and removal fixed it completely. I also removed the small front postcard sized one as well, but still had a noticeable rub so I broke out the heat gun which solved it for me. It wasn't the end of the world, but I just don't want to listen to my tire abusing my fender liner every time I back out of a parking spot.