Track day tires.
Regular tires for this car are 165 13". These are 235 13". I'll (hopefully) hot lap the hell out of them this weekend. The car will be a rental, but to decrease shame on the lap time we'll use these bad boys.
Wish me luck because I'm car-less for 2 years now (#racecardriverexcuses), last time I took a car for a nice spin was back in February and I didn't even manage to downshift properly on a 40km/h (25mph) turn. What a shame.