Yes zp or runflat tires cost more, I got mine on clearance for $200 a tire, I have 2 more in my shop

I have 30k miles on my rears atm.
Enough tread that I might run this winter, or change out to the new set and swap back in the spring.
Since you are buying from the installer, do they offer free tire rotations ?
To rotate these, take both rears, unmount, flip and remount, then will be put on opposite side of the car
So what was on the inside on the drivers side is now on the outside off the passenger side.
Makes a big difference on the life of tires with the high camber