That's because your coupe is a "performance" car!
When I went for new tires on my Nissan Rogue they looked at the door jamb sticker and it said "V" rated tires (and of course the price jumped over 30% per tire).
The sales guy tells me that he doesn't know why I would need a "V" rated, 160mph performance tire on a mini-SUV and maybe I would be happier with an "H" rated with softer sidewalls and a softer ride.
So I can't take cloverleafs at 80 and don't plan on getting up towards 100 on the interstate straights, but the ride is nicer.....