camlg

Guys, I know this subject has been beat to death however I still can't find the info that I need. I want to get larger tires however I'm trying to figure out what the effects on the truck will be. I've herd guys running 35" say that the truck doesn't hold 6th gear on the highway and that it's a little sluggish off the line till you get the RPM's up. I'm looking at getting Michelin LTX AT2 275/70/18 or 275/65/20. We all know stock is 32" diameter, the replacement 18" are 33"...