The fastest way to cut lap time on a simulator is to get consistent first, then fix the biggest losses in order: brake at the limit in a straight line, take the line with the largest radius, get back on the throttle earlier on corner exit, and use telemetry or a lap-delta display to find exactly where you lose time against a faster lap. Exit speed usually matters more than entry speed, because you carry it all the way down the next straight.
1. Be consistent before you try to be fast
You cannot improve what you cannot repeat. The Virtual Racing School recommends running a base setup, settling into a rhythm over several laps, and only adjusting the car once your lap times are consistent, because until then your feedback is not reliable. If you spin or lock a wheel, watch the replay until you know why.
2. Understand how much grip you have
A tire can only produce so much force, and that budget is shared between braking, accelerating and turning. Racing schools draw this as a "friction circle" or traction circle: at maximum braking there is no grip left for cornering, and as you ease off the brake, cornering grip becomes available. The Skip Barber Racing School's book Going Faster! explains it this way in an excerpt published by Bentley Publishers, and VRS uses the same model for sim racers.
3. Brake harder, earlier, then later
- Threshold braking: the target is the pressure just short of locking the tires. VRS notes that the first hit of the pedal at high speed can be very firm, because that is when lock-up is least likely (VRS braking guide).
- Find the level, then move the point: Skip Barber teaches braking a little early first, learning how much brake the car can take, and only then moving the braking point closer to the corner (Going Faster! excerpt).
- Trail off into the turn: releasing brake pressure progressively as you add steering keeps the front tires loaded and helps the car rotate. Skip Barber calls this trail-braking.
- Downforce cars: grip falls as speed falls, so brake hardest at the start and bleed pressure off as the car slows (VRS).
4. Take the line with the largest radius
For a single corner, the fastest path is usually outside-inside-outside, because a wider radius allows more speed for the same grip (VRS). Before a long straight, a later apex lets you straighten the car and accelerate sooner; when a slow corner follows, you can give up some exit for a faster entry (VRS on the optimal racing line). If you run out of track on exit, your apex was probably too early; if you have track left over, it was probably too late, as Ross Bentley explains at Speed Secrets.
5. Get back to throttle sooner
Exit speed is carried all the way down the next straight, so a small gain there is worth more than a small gain on entry. Skip Barber's material places the throttle application point as early as you can begin accelerating without running out of road, and notes that lower-powered cars can usually pick up the throttle earlier than high-powered ones (Bentley Publishers excerpt above).
6. Use data to find the time
Once you are consistent, compare your lap with a faster one. In an iRacing column, a team engineer describes overlaying two drivers' throttle and brake traces against speed: the faster driver went deeper into the first turn and got back on the throttle sooner and more decisively (iRacing, Commodore's Garage). A live delta bar gives you similar feedback while you drive (VRS). Our guide to reading telemetry goes further.
Common mistakes
- Braking later every lap before you know the car's braking limit.
- Turning in too early, which forces you to lift on exit.
- Changing setup to fix inconsistent driving.
- Relying on ABS instead of learning threshold braking; VRS notes that threshold braking done well is still more efficient.
Practice on a full rig
A wheel with strong force feedback and a load-cell brake make it easier to feel the limit. SimsForHire brings full-motion simulators to corporate events, private parties and brand activations, and we deliver, set up, staff and tear down. Delivery is free within 50 miles of Miami. Full-motion rigs are $2,750 per rig per day, plus tax and insurance; see pricing or call (754) 228-5654.