Automotive suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. Suspension systems serve a multiple purposes contributing to the car’s road-holding/handling and braking for good active safety and driving pleasure, and keeping vehicle occupants comfortable and reasonably well isolated from road noise, bumps, and vibrations, etc.
It also helps the car steer by turning smother turning and holding steering angles tighter and holding the tire in align when driving straight down the road. Alignments are measured in the smallest degrees for instance toe alignments are measured in 1/100 th of a degree. That to me is such a small fraction but it can make all the difference in the word on tire wear and driving comfort. When it comes to finding problems with a cars alignment I look at it as kind of a challenge and take the time to figure it out.