The verdict up front (6 minute read if you want the data)
If you keep your 992 GT3 RS on Porsche-approved N-spec tires, the independent test data is unusually clear. The Pirelli P Zero Trofeo RS is the fastest tire you can fit: quickest single lap, quickest and most consistent over a six-lap run, the best wet performance of the track tires, and the cheapest of the three. The Goodyear Eagle F1 SuperSport RS is the quiet overachiever: best dry braking of all six tires and second on the long run. The Michelin Pilot Sport Cup 2 R, the factory track option, is the lightest tire by a clear margin and within half a second on a hot lap, but fades over a stint and is the weakest N-spec tire in the wet. If you track hard enough to run a second set of wheels, the aftermarket 200-treadwear and R-compound world (Nankang, Bridgestone, Yokohama, Hoosier and others) offers faster warm-up and lower running costs at the price of Porsche approval and tire life. Simplest guidance: chasing lap times on N-spec, buy the Pirelli; dry sprints and lowest weight, buy the Michelin; braking-first and value, don't overlook the Goodyear. Details below.
What Porsche fits and approves
The 992 GT3 RS ships on 275/35 ZR20 front and 335/30 ZR21 rear, and Porsche homologates six tires for it with the N0 marking. Three are track-focused: Michelin Pilot Sport Cup 2 R, Pirelli P Zero Trofeo RS, and Goodyear Eagle F1 SuperSport RS. Three are street-leaning: Michelin Pilot Sport Cup 2 (the standard factory fitment), Pirelli P Zero Corsa, and Goodyear Eagle F1 SuperSport R. Porsche's guidance is to run matching N-code tires on all four corners, and if you follow it, these six are your universe. Fortunately, Auto Bild Sportscars tested all six on a GT3 RS at Nardò, same car, same day, 335/30 R21, which is the data everything below rests on.
The three track tires, by the numbers
- Dry braking, 100 to 0 km/h: Goodyear SuperSport RS 26.8 m, Michelin Cup 2 R 27.2 m, Pirelli Trofeo RS 27.2 m. The Pirelli was the only tire to stop under 27 m consistently across repeated runs.
- Single hot lap: Trofeo RS 2:18.92, Cup 2 R 2:19.33, SuperSport RS 2:19.42. Half a second covers all three.
- Six-lap run, average lap: Trofeo RS 142.45 s, SuperSport RS 145.65 s, Cup 2 R 146.32 s. The Pirelli's fastest and slowest laps were within 0.5 s; the Michelin lost time to heat and tread pickup as the stint went on. For a 20-minute session, this is the number that matters.
- Wet braking, 80 to 0 km/h: Trofeo RS 29.4 m, Cup 2 R 29.8 m. Goodyear RS was not wet-tested (tires arrived late).
- Wet handling, average speed: Trofeo RS 81.9 km/h, Cup 2 R 78.9 km/h, last of the five tires run in the wet. Aquaplaning breakaway: Pirelli 135 km/h, Michelin 120 km/h.
- Weight, 335/30 R21: Cup 2 R 51.8 kg, Goodyear RS 55.6 kg, Trofeo RS 56 kg. The Michelin saves roughly 4 kg per rear tire, unsprung and rotating.
- Price in the test: Trofeo RS cheapest, Goodyear RS middle, Cup 2 R most expensive.
Test result: Pirelli first, Michelin second, Goodyear third among the track tires, with the Goodyear's ranking hurt by the missing wet data rather than a dry weakness.
Pirelli P Zero Trofeo RS: fastest, and fastest for longest
Pirelli developed the Trofeo RS with this car as a target and it shows. It wins the hot lap, wins the long run by more than three seconds a lap on average, stays consistent as heat builds, and carries wet performance a track tire has no business having. It's heavier than the Michelin and the least "factory" of the three in purist eyes, but no other N-spec tire matches its combination of pace, consistency and price. Choose it if you want the best lap time from the first session to the last, or if a track day might turn wet.
Michelin Pilot Sport Cup 2 R: the purist's factory track tire
The case for the Cup 2 R is real: it's the tire Porsche specs for the track option, it's the lightest in the test by a wide margin, and on a flying lap it's 0.4 s off the Pirelli with identical dry braking. Where it loses is endurance and weather. Lap times decayed over six laps as the compound overheated and picked up rubber, and it posted the slowest wet handling and the earliest aquaplaning of any tire tested. Choose it for short dry sprints and time attack, where low unsprung mass and single-lap precision matter most, and manage pressures and cool-down laps carefully. Skip it if your track days include rain or long stints.
Goodyear Eagle F1 SuperSport RS: the one nobody talks about
The SuperSport RS posted the shortest dry stop of all six tires and the second-best long-run pace, only a tenth off the Michelin on a hot lap, at a lower price than the Cup 2 R. Its wet performance is unknown from this test, which is the honest caveat. If braking is your priority and you want an N-spec track tire without the Michelin premium, it deserves far more consideration than it gets in forum threads.
The three street-leaning N-spec tires, briefly
The standard-fitment Michelin Pilot Sport Cup 2 ran 2:21.39, about 2.5 seconds off the track tires, but with a six-lap variance of just 0.6 s and the most road-friendly compound; it's the right tire if the car is driven to the track and mostly home again. The Pirelli P Zero Corsa was the wet-weather standout of the entire test: fastest wet lap by nearly three seconds, second-best wet braking, and aquaplaning resistance up to 150 km/h. The Goodyear SuperSport R took the best wet braking distance of all (28.2 m) with solid dry consistency. None of these will match the RS tires on a dry lap, but if the car sees rain and street miles, the Corsa in particular is a serious answer.
Beyond N-spec: the aftermarket track alternatives
Plenty of GT3 RS owners who track frequently run a second set of wheels for the aftermarket 200-treadwear and R-compound tires. Here's what that world looks like and what you give up.
- Nankang CR-S V2 (200TW): Tests competitively against the Bridgestone RE-71RS and Yokohama A052 in grassroots motorsport and costs a fraction of N-spec rubber. Its catalog includes the 335/30 ZR21 rear; confirm front availability before ordering.
- Bridgestone Potenza RE-71RS and Yokohama Advan A052 (200TW): The two pace benchmarks of the 200TW class, fast to heat and sharp on a short lap, favored in autocross and time trial.
- Goodyear Eagle F1 Supercar 3R (100TW) and Continental ExtremeContact Force (220TW): Less common on this chassis but legitimate options in the R-compound and extreme-performance categories respectively.
- Hoosier: The R7 is a competition compound for drivers who have moved past street tires entirely; the Track Attack Pro (200TW) is the street-legal option.
Three trade-offs apply to all of them. First, none carry Porsche's N approval, so Porsche's fitment guidance doesn't cover them. Second, they generally heat faster and grip harder on a short lap but wear faster and fall off harder when hot; they are consumables, not a season's tires. Third, and this is the part nobody tells first-time owners: almost none are made in the stock 275/35 R20 and 335/30 R21 sizes, which is why serious track owners run aftermarket wheels in smaller diameters. That unlocks the full 200TW and R-compound catalog, cuts the cost of every set, and adds sidewall support under braking. If you're not ready for a second set of wheels, the N-spec track tires above are the right answer.
Which one for your GT3 RS?
Pirelli P Zero Trofeo RS: fastest lap, most consistent stint, best wet of the track tires, best price. The data-backed pick.
Michelin Pilot Sport Cup 2 R: lightest N-spec tire, factory track option, brilliant for short dry sprints with disciplined pressure management.
Goodyear Eagle F1 SuperSport RS: best braking, strong long-run pace, lower price than the Michelin. The overlooked N-spec value.
Aftermarket 200TW or R-compound: for frequent trackers running a second wheel set who accept faster wear and no Porsche approval in exchange for pace and cost.
Whichever you choose, setup decides more than brand: correct cold pressures for that specific tire (Porsche publishes them for N-spec track tires), a fresh alignment, and cool-down laps at the end of every session.
Get the right one for your GT3 RS
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Ready to buy? Shop the Pirelli P Zero Trofeo RS, Michelin Pilot Sport Cup 2 R and Goodyear Eagle F1 SuperSport RS at Tire Pig and have them mounted and balanced in your driveway with our mobile installation service.
Written by the Tire Pig team, with AI assistance.