Nervous at high speed
An aero or platform problem, not a mechanical one — it only shows above a certain speed and gets worse over kerbs and crests.
Ranked on a free car
This week's rookie circuit is free — these labs open with this symptom at its key corner, already ranked. What is free this week.
The default order
Generic order — open a lab for your car and corner.
- 01Make smaller inputs at speedhalf the inputtechnique
At high speed a small steering movement is a large change in load. What feels like a nervous car is often a busy pair of hands.
None — try this before deciding the car is unstable.
- 02One input, held1 inputtechnique
At speed a small correction is a large load change. What feels like an unstable car is usually a busy pair of hands making it one.
None. Try this before believing the car is nervous.
- 03Stop catching itwait ½ secondtechnique
A fast car mostly self-corrects. Catching a slide that was already ending puts the car into the opposite one, which is the moment that actually hurts.
Genuinely hard. Practise where a spin costs nothing.
- 04More rear wing1 clickaero
Rear downforce grows with speed, exactly where high-speed instability lives.
Top speed — a real cost on a track with long straights.
- 05Less rake — lower the rear or raise the front1–2 mmaero
Moves aero balance rearward and calms the car in the quick stuff.
Costs front-end response at speed.
- 06Stiffer heave / third springone stepplatform · adv
Resists both wheels moving together, so it holds ride height under aero load without adding roll stiffness — platform control with no balance cost.
Prototype-side; not available on every car.
- 07Stiffer rear springs or ride height upone stepplatform
Stops the floor bottoming and stalling mid-corner, which is what makes a car feel random rather than loose.
Costs rear mechanical grip in slow corners.
- 08Check bump stop gap—platform · adv
If balance changes abruptly at one speed or over one crest, you're hitting the stops rather than running out of grip.
None — this is diagnosis.
- 09More rear toe-in0.05–0.1°geo
Straight-line and entry stability for very little else — the standard band-aid for a nervous rear.
A little drag and rear tyre heat.