R Class — PI 999+ Cars, Tunes & Racing Strategy

R class is Forza Horizon 6's most exclusive performance tier — PI 999 and above. These are hypercars pushed to their absolute limits, purpose-built speed machines, and experimental builds that barely stay on the road. R class racing is chaos. The cars have so much power that most players can't control them for a full lap. But if you can handle the speed, R class gives you access to the fastest leaderboard times in the game.

What Is R Class — PI Range and How Cars Reach 999+

R class starts at PI 999 and goes up from there. Unlike every other class (D through S2), there's no upper limit. A car at PI 1000 is R class. So is one at PI 1098. The PI system technically caps around 1100 since there's only so much you can bolt onto a car, but the point is: R class isn't a balanced competitive bracket. It's a free-for-all.

Cars reach R class through a combination of engine swaps, forced induction, weight reduction, and tire upgrades. Most hypercars start in S2 and cross into R class with an engine swap — the Koenigsegg Jesko, for example, starts at S2 972 and hits PI 1028 with the 1750hp upgrade. Some cars, like the Rimac Nevera, start in R class stock because their electric powertrain gives them absurd acceleration numbers that the PI formula can't handle gracefully.

Important: PI doesn't tell the whole story in R class. A PI 1010 drag build might hit 300 mph but can't turn. A PI 1005 grip build corners like an F1 car but tops out at 240. Always look at the stat breakdown, not just the PI number.

Best R Class Cars — Ranked

Not all R class cars are created equal. Some are one-trick ponies that only work on highway pulls, others are surprisingly usable on technical tracks. Here are the top five, ranked by overall usefulness:

1. Koenigsegg Jesko (Attack version)

PI 1028 with max upgrades. 285+ mph top speed, downforce that actually works at speed, and — this is the crazy part — it can take a corner. The Jesko is the closest thing R class has to an all-rounder. Best for: highway races, speed traps, danger signs, and surprisingly decent on fast circuits. Weakness: launch traction, even with AWD swap it spins through third gear.

2. Rimac Nevera

PI 1030+ with upgrades. Instant torque from four electric motors. 0-60 in 1.85 seconds in-game. The Nevera destroys everything off the line — you'll gap a Jesko by 50 meters before it hits 100 mph. But the weight (5100 lbs) means it understeers in fast corners and eats tires on long races. Best for: drag racing, short sprints, anything that starts from a dead stop. Weakness: cornering above 150 mph feels like steering a freight train.

3. Hennessey Venom F5

PI 1015-1040 depending on build. The top speed king — 300+ mph with the right gearing. Lighter than the Jesko, more raw, less forgiving. The Venom F5 rewards drivers who can control oversteer at 200 mph. If you can't, you'll spend half the race facing the wrong direction. Best for: top speed runs, highway races, danger signs where pure velocity matters. Weakness: no active aero, downforce falls off at extreme speeds.

4. Bugatti Chiron Super Sport

PI 1005-1035. The comfortable choice. Heavier than the Jesko but much more stable — it goes where you point it, even at 270 mph. The Chiron is what you pick when you want R class speed without the constant fear of death. Best for: long highway circuits, Goliath runs, anywhere you need consistency over 10+ minutes. Weakness: acceleration lags behind the Jesko and Nevera, weight hurts it in tight sections.

5. Lotus Evija

PI 1000-1025. The handling pick. Electric like the Nevera but 1200 lbs lighter. The Evija is the only R class car that actually enjoys corners — it rotates mid-turn like an S2 grip car. But the top speed cap (around 260 mph) means you'll lose on long straights. Best for: technical circuits with lots of turns, sprint races in the city. Weakness: limited top speed, battery simulation means power drops slightly at low charge on very long races.

R Class Tuning: What Actually Works at 270+ MPH

R class tuning is different from every other class. The forces at 280 mph break most conventional tuning rules. Here's what the top leaderboard tuners do:

Aero: max front and rear downforce — at these speeds, you need every pound of downforce you can get. The drag penalty is irrelevant when you have 1500+ horsepower pushing through it.
Tire pressure: 28-30 PSI front, 28-30 rear — lower than you'd think. Tires heat up dramatically at R class speeds. Starting lower prevents them from overheating and losing grip mid-race.
Final drive: set for 280+ mph in top gear — you redline in 7th (or 8th, 9th) at your car's actual top speed. Don't gear for 320 mph if the car can only hit 290 — those extra RPMs are wasted.
Springs: as stiff as you can handle — soft springs make the car wallow at 200+ mph. Stiff springs keep the platform stable. But too stiff and bumps become launch ramps. Find your tolerance through testing.
Camber: -1.5 front, -1.0 rear — aggressive negative camber helps mid-corner grip at extreme speeds. Any more and you sacrifice braking stability.
AWD swap: mandatory for 99% of builds — RWD might give you a PI break, but you'll never put 1500 hp down through two tires. AWD swap and tune the center diff to 70% rear bias for the best balance.

When R Class Actually Makes Sense

R class is not the answer to everything. Half the leaderboards are dominated by S2 cars because they can actually complete a lap without visiting a tree. Here's when to use R class:

Speed traps: yes, always R class. The goal is pure velocity at a single point.
Highway races: yes. The long straights let R class cars stretch their legs, and the corners are gentle enough to manage.
Danger signs: yes. More speed at the ramp = more distance.
Goliath (and other long circuits): situational. An R class car can post faster laps on Goliath, but only if you don't crash. One mistake costs 5-10 seconds.
Technical circuits with tight corners: no. You'll brake earlier, corner slower, and spend half the lap fighting the car. An S2 car will beat you by 3+ seconds per lap.

R Class vs S2 — When the Lower Class Is Actually Faster

Here's the uncomfortable truth: on most tracks, S2 is faster than R class. R class cars have 300-500 more horsepower, but they can't use it. A 998 PI S2 car with 900 hp and proper downforce will out-corner a 1050 PI R class car by 15-20 mph through any medium-speed turn. On a circuit with 10+ corners, that adds up to a faster lap time despite being 100 PI lower.

S2 makes more sense when: the track has more than 3 corners per mile, the surface is bumpy (R class cars get unsettled easily), or you're racing against other players rather than the leaderboard (consistency beats peak speed in multiplayer).

R class makes more sense when: the track is mostly straight (highway, airfield), you're doing a PR stunt, or you just want to feel 280 mph wind noise. Sometimes the meta answer isn't the fun answer.

Top 5 R Class Cars — Stat Comparison

Car	Speed	Accel	Handling	Braking	Best For
Koenigsegg Jesko	10	8.7	9.1	9.3	All-round R class
Rimac Nevera	9.1	10	7.8	8.5	Drag, sprints, launch
Hennessey Venom F5	10	8.4	8.3	8.0	Top speed, highway
Bugatti Chiron SS	9.6	8.0	8.8	9.0	Long circuits, stability
Lotus Evija	8.8	9.5	9.6	9.2	Technical circuits