Class S1 (701–800 PI) is high-performance grip territory. Cars carry serious power; small suspension and aero mistakes turn into understeer on corner entry or oversteer on throttle, so community notes become more valuable than a bare nine-digit code.

Road-racing S1 tunes usually prioritize aero balance and tire temperatures. Street S1 builds may soften that for traffic and shorter bursts between lights. Drag or drift conversions in this class exist too — match the discipline label before you download.

Read tuner notes for launch behavior and whether the car is meant to rotate early or stay planted. Share codes alone do not tell you that story, which is why each tune page on this site adds class and discipline context around the code.

If the list below is empty for your filters, clear them or submit a verified S1 setup so other Horizon players can find it here. Empty results are honest: no matching community tune has been published yet.