In production since model year 2003, the Titan is a full-size pickup that’s Nissan’s answer to the Ford F-150, RAM 1500, and Toyota Tundra. The 2017 Titan was the truck’s second generation, with fresh styling, a 390 horsepower 5.6L V8 engine or a 310 horsepower Cummins diesel engine. Titans are available as regular or XD models, with XD being a heavy-duty commercial-grade truck, and your choice of regular, extended cab or crew cab body styles. 2017 Nissan Titan XD tires could be LT265/60R20, LT275/65R18, or LT245/75R17 depending on the vehicle’s trim level, which includes Platinum Reserve, PRO-4X, S, SL, and SV. If you bought a brand new 2017 Titan XD then your vehicle likely left the factory with a set of General Grabber HTS or Firestone Transforce HT tires attached.