Nervous at high speed
Oversteer family
An aero or platform problem, not a mechanical one — it only shows above a certain speed and gets worse over kerbs and crests.
The default order
The sequence for this symptom on no car in particular, at no corner in particular. Pick both and the order changes.
- 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.
Step sizes are a first move, not a setting. Cars differ by a factor of several in how much they respond to the same change.
Where to go next
The order above is generic. Pick your car to see it re-ranked, then pick the corner it happens at.