Forza Horizon 6 Pi Calculator

Moderate grip increase with low PI penalty. Excellent for C and B class builds.

Solid balanced grip for A-Class street racers without consuming excessive headroom.

Track day dry weather compound. High lateral cornering G without full Race slick PI penalty.

Maximum dry asphalt grip. Heavy PI penalty—best reserved for dedicated S1/S2 grip builds.

Deep tread blocks for dirt, gravel, and mud. Essential for mixed-surface festival scrambles.

Wider rear rubber patch pins the driven axle, eliminating wheelspin on corner exits.

Wider front contact patch eliminates turn-in understeer on mid-engine and front-heavy chassis.

Saves unsprung rotational mass. Improves suspension reaction over curbs and bumps.

Unlocks full suspension tuning: camber, toe, ride height, spring rates, and bump/rebound dampers.

Increased travel and soft progression. Absorbs jumps and rough terrain in dirt trails.

Provides 60+ degrees of steering lock and aggressive steering geometry for Touge drift runs.

Multi-piston calipers and slotted 2-piece rotors. Dramatically shortens 100-0 stopping distances.

Strips interior, replaces panels with carbon fiber. Upgrades cornering, braking, and acceleration simultaneously.

Adds torsional rigidity for sharper response, but adds ballast weight.

Large ceramic ball-bearing turbos. Delivers immense mid-to-top end horsepower for straightaway speeds.

Linear boost delivery relative to RPM. Widely regarded as the most PI-efficient forced induction choice.

Cold air carbon intake tract. High volumetric efficiency with minimal PI penalty.

Aggressive lift profile raises the rev ceiling by 1,200 RPM, expanding the usable powerband.

Dense bar-and-plate core suppresses heat soak during endurance sprints.

Unlocks complete individual gear ratio and final drive slider adjustments. Crucial for powerband alignment.

Reduces rotational inertia for explosive throttle response between gear transitions.

Unlocks front downforce tuning. Adds up to 180 lbs of high-speed downforce, curing high-speed understeer.

Unlocks rear downforce. Pins the rear axle through sweeping bends at the cost of top-speed drag.

Converts 2WD chassis to All-Wheel Drive. Provides dominant online race starts and all-weather traction.

The ubiquitous Forza LS swap. Massive torque curve across the entire rev range for power builds.

Lightweight race-spec inline 6 with revs up to 9,000 RPM. Perfect balance of weight and power.