I've been having vibration issues with my 2014, Z-71, 4X4, Crew, 18in Wheels, Goodyears & 3:73 gears. The dealership had to replace 2 Goodyears because they couldn't be road forced. My truck currently has 22,000 miles in one year and the vibration starts at 45-70mph.. I'm sick of this vibration... wish i bought the Ram 1500.. the dealership has my truck and I'm in a loaner till its fixed...