forget cutting slits. Do that and you run the risk of a crack coming up your bed side. Here is what I did. Leave the tire on and jack up the trk to give you enough room to place a wooden bat or rubber mallet (I used a rubber mallet). place the rubber mallet faces on the tire and the other on the inside fender. I slowly lowered the trk while my buddy worked the fender. We just bent a little at a time and worked our way back and fourth until you get enough room for the tires to clear. I rolled mine before I had the rims so I wasn't sure if that would completely clear the tires so I went ahead and used a crescent wrench to bend the fender lip up a little further, again working my way back and forth little by little. I cleaned the fender lip before we rolled them and sprayed some rattle can paint to cover the cracks on the under side/inside of the fender lip. I'm running 22X9.5 with a +35mm offset on 265/35/22's. Oh and the trk is a 03 ext cab with a 4/6 drop.
When we did mine, we cut slits, but first we drilled holes at the end of where the cuts would be .. that way they would not continue to crack. No problems so far ... paint chipped some, but you cant see it unless you are lying on the ground.
I cut a line with a razor blade to keep paint from chipping, then hacked off a 1/4" of the fender lip with a cutting wheel. Then cleaned it up with a grinder, flap disk and finally some sandpaper, primer and duplicolor. You really have to be looking to tell its been hacked up.
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