Hello Mike, I was also concerned about the negative camber of the rear tires on my 1961 Rampside until I saw the attached Chevy brochure. The tires do sit flat, but they are definitely tucked in. Since I only drive it a couple of hundred miles a year, I haven't seen any unusual wear. Take care, Bill [demime 0.98e removed an attachment of type image/gif which had a name of '61-Chevy-Truck-flyer.gif]