What tire brand is on the car now? If Michelin, then DT will pro rate the treadwear on a new set of Michelins. You'll have new Michelin tires for less money.
Try a "thick 5w-20 for hot months and a "thick" 0w-20 for cold months. Pup for me. Go to a thin 30w like PP 5w-30, if you "must". Better mpg 4 me with pup 5w-20 than with dealer tgmo 0w-20. .02 Ymmv.