Mike 
2015 Toyota Sienna Minivan Limited 7-Passenger 4dr Minivan AWD (3.5L 6cyl 6A)
AWD Tires Frequently Replaced at High Cost
 This Van is very good except for the tire problem.  The AWD version comes with no spare and run flat tires.  The run flat tires last between 14,000 and 18,000 miles and come without a manufacturers warrantee.    I drive between 25,000 and 30,000 miles per year.  I am now at 35,000 (16 months) and am on my third set of tires.the originals were replaced at 15,500.  The second set lasted until 34,700 miles.  I just put on the 3rd set. The way we drive, if we keep this van for 5 years, I would spend over $11,000.00 on tires.  DO NOT BUY THE AWD SIENNA. You can put on regular tires, but you would run without a spare.  If you add a spare, you have to buy a mount for the cargo area, but hen you can't fold down the third row seats for more cargo...