While I do see your point about not wanting to spend the $ on a set of better tires since its a lease I also look at it as cheap insurance. If it prevents you from any car accident its already money in the bank for you imo. Figure a set of good tires could be had between 8-1200.... which isn't that bad plus you can always sell them after the lease is up for a few hundred bucks so the actual cost is maybe 60-70% of that. Given that the reviews for the Goodyear tires are pretty much crap in all conditions this is something to consider if you plan on using the car all year round.
Mineral White/Mugello 2016 F85 X5M