@
RDFTS The pinch welds are right near the firewall once you take the liners off and they run far up (about half way through the whole fender well). The pinch welds near the fire wall are exactly where most people rub. It really is a no brainer for anyone running 37's...and for that matter, I would think added clearance is good for 35's too.
Here's a pic I randomly found on here. Not my truck and not the cleanest job of it, but gives you the general idea. I had mine done by SVC. The day I got my 37's on, I contacted Jeff and said I was rubbing. He quickly said I need their "37 mod"...basically was hammering the pinch welds. They did a very clean job of it and we're very reasonable on the price.