Test Summary
All of these tires offer something worthwhile, whether suited to your driving style, experience, specific events, or simply the type of person you are. Tire shopping can be confusing at any performance level, but choosing the right set ahead of time can save time and energy on the track. That way, you can focus on enjoying the drive or pulling ahead of the competition.
First off, particularly compared to the DOT-approved tires in the Racetrack & Autocross tire category, there's no denying the Michelin Pilot Sport GT S8M benefits significantly from not being beholden to meeting the necessary requirements to make it road legal, and with the leash off, it showed. It hardly needs to be reiterated, but it was the best thing we drove in this group hands down, maybe as long as we've been testing tires; yes, it's not going to last for a long time, yes, it's not going to be legal for the road or some race events, but if you've ever wondered "how much better can a dedicated racing slick really be over something like a DOT semi-slick?" The answer is: a lot better. It magnifies everything you can possibly want the car to do and performs whatever you ask of it without complaint.
As for the rest, Yokohama's ADVAN A055 we've looked at on previous test platforms in narrower sizes and it didn't compare quite as favorably, but in this test, on the BMW M2, in a 275/35R18 size it was genuinely impressive. It wasn't just faster than anything else (which it was, by a commanding half-second), it managed to bring the performance without feeling like there was one magical flyer lap and then sharp fall-off, or having to work around some particularly negative characteristic or behavior. It was consistent, well-behaved, and fast.
Conversely, Hoosier's A7 was close behind in terms of speed, but it didn't have the endurance to maintain its first-lap steering and handling after we got some heat in it. It was still very quick and manageable enough during the inevitable fall-off, but just not quite there.
Pirelli's P Zero Trofeo Track is, as of this test, new in town and like any fresh tire, had something to prove, which it managed to do quite nicely. Its lap times weren't quite as thrilling as the leaders, but it wasn't a yawning chasm between them either. It was competitive. Moreover, its natural steering made it a pleasant option to track, and only improved as we went through subsequent laps. We'd like to see a little tighter braking, but a good show overall.
Speaking of pleasant tires: Toyo's Proxes R. It was fine! It was nice, compliant, did what was asked of it and didn't really fall-off from lap-to-lap. That kind of consistency is appreciated alongside its well-balanced nature. It would just be nice if it had a little more grip, a little stronger braking. Still, what a nice tire.
Hoosier's R7 rounds out the test set with a performance that fell behind most of the group, not just in time, but in the erosion of performance after its initial run. It remained somewhat consistent after that point, but with other competitors offering a smoother, faster, or more reliable experience, it's in a challenging position.
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