How about improved efficiency that even existing owners can benefit from? An underappreciated part of any vehicle - the only reason you can start, stop, and turn - Tires There is a lot that goes into the design and construction of a tire and optimizing efficiency vs capability. Tesla's fantastic tire team was able to find a way to get even better rolling resistance from the 20" All-season. Which means when you buy your next set, your truck will become even more efficient. Put simply, tires continuously deform as they roll down the road. That flex causes internal friction in the rubber and turns mechanical energy to heat, wasting power that could have gone into moving the vehicle. Reduce the waste heat, and you have more energy for useful work. The 'T1' designation is the latest and greatest so keep an eye out when you need to replace your tires.