How are suspensions fine tuned?

Call it what you will fine-tuning a suspension is taking a car’s suspension and altering it to suit certain road conditions. There are many things that can be done to make it more suitable for the conditions it will be used in. It could mean changing the spring or shock absorber rates, springs and shock absorbers are part of the suspension after all, it could be changing suspension bushes for firmer of softer ones, it could be changing tyres or tyre pressures, it could be changing the wheel alignment.