My daughter-in-law has a 2014 XC90 (3.2 R-Design). My son is having to put a 3rd set of tires on it after only 46,500 miles. The tires are wearing evenly and are rotated regularly. The last set (Pirelli) only has 28,000 miles on them and are needing to be replaced. Has anyone else seen this abnormal tire wear?