Tire Selection Masterclass — Rally vs semi-slick vs drag — what to use when
Understanding tire selection masterclass is what separates casual players from consistent podium finishers in FH6. Most people slap on the part with the biggest stat increase and call it a day. Works fine against AI. Does not work online where everyone else did their homework. Here's what I've learned about rally vs semi-slick vs drag — what to use when after way too many hours testing.
The Decision Framework
Before you spend a single credit, answer three questions: What class am I building for? What kind of tracks? What's my driving style? A drag build wants completely different parts than a circuit build. A technical track rewards handling. A highway sprint rewards power.
| Level | PI Cost | Gain | Best For |
|---|---|---|---|
| Street | Low | 10-15% | Budget B/C class builds |
| Sport | Medium | 20-30% | A class — best PI-to-performance ratio |
| Race | High | 35-50% | S1/S2 where every tenth matters |
Common Mistakes
- Maxing every part. A maxed S1 899 car loses to a carefully built S1 892. PI efficiency beats throwing parts at the car.
- Ignoring weight reduction. Less weight helps acceleration, braking, cornering, tire wear — literally everything.
- Wrong upgrade order. Handling first, then power, then weight. A 600 HP car that can't turn is a 600 HP car in a wall.
- Not testing between upgrades. Add one part, run a lap, check the feel. The PI system lies sometimes.
Build Templates by Class
| Class | Priority 1 | Priority 2 | Priority 3 |
|---|---|---|---|
| D/C | Tires (Street) | Weight Stage 1 | Suspension (Sport) |
| B | Tires (Sport) | Suspension (Race) | Exhaust/Intake (Sport) |
| A | Tires (Semi-Slick) | Suspension (Race) | Weight Reduction (Race) |
| S1 | Tires (Semi-Slick) | Full Race Suspension | Race Weight Reduction |
| S2/R | Race Everything | Max Aero | Engine Swap if beneficial |
Bottom line: buy the RIGHT parts, not the most expensive parts. A car 10 PI under the limit built with a plan gaps the maxed-out car with no strategy. Every single time.
Real Tire Testing in FH6
Tire selection is the single most impactful upgrade decision in FH6. I tested compound options on the Horizon Mexico circuit in an A-class Nissan GT-R. Street tires: 1:55.6 average, predictable but slow — rear steps out gradually and catches easily. Sport tires: 1:53.1, massive improvement in corner speed and braking stability. Race tires: 1:52.0, best lap times but the grip threshold is harder to feel — the transition from grip to slide is much sharper. In practice, sport tires are the best value for A-class and below. Race tires become mandatory for S2 and X-class where cornering forces are higher. For wet conditions, the wet race compound is 2-3 seconds per lap faster than any dry tire in standing water. Track width is also important: fitting the widest tires the car allows increases the contact patch and improves cornering grip by about 5-8%, but beyond 9 inches of width the returns diminish. The tire compound choice matters more than width for lap time.
Tire width is another crucial but often overlooked variable. I tested three front/rear width combinations on the same car and track. Stock width (235mm all around): predictable but mid-corner understeer, average 1:53.1. Staggered setup (255 front, 285 rear): massive rear grip improvement, the car rotated better into corners and had more traction on exit, 1:52.4. Max width (295 all around): more steering effort, front tires overwhelmed the steering response, the car felt heavy and lazy through direction changes, 1:52.9. The staggered setup was optimal because it increased rear grip for corner exit without making the steering sluggish. For FH6's physics, a 20-30mm stagger between front and rear width gives the best balance on most cars. Tire pressure also matters: lower pressure (26-28 PSI) increases contact patch for cornering at the expense of straight-line rolling resistance and cooling. For hot lapping under 5 laps, run lower pressure. For race distances over 5 laps, increase pressure 1-2 PSI to prevent overheating. Tire temperature management in FH6 adds a layer of strategy most players ignore — and those who manage it gain 0.3-0.5 seconds in the second half of a race.