Most people buy coilovers, wind them all the way down, set the dampers to the middle, and drive away. Two of those three decisions are usually mistakes.

Ride height determines roll centre. Drop a strut car far enough and the roll centre goes below ground, which makes the car roll more, not less, no matter how stiff the springs are.

Damping is not a stiffness dial. It controls how quickly weight transfers. Too much and the tyre skips over bumps instead of following them; too little and the car keeps moving after you have finished asking it to.

The cheapest improvement most people can make is a corner-weight session and a proper alignment. It costs less than a set of tyres and transforms cars that owners had written off as badly set up.

If you have never had the car on scales, you do not know what it weighs at each wheel, and everything else is guesswork.