Here ' s the AskScience post about it from a couple years agoivy 4 vk 4 xsh 35 d 91981 , which states that in addition to temperature based degradation of magnetic fields , mechanical impact can also destabilise magnetic fields , so by it ' s very nature magnets would be a bad choice for car suspension . I ' m not sure how long it would take , but to be honest any situation in which missing a service could result in your suspension magnets touching when there ' s probably at best chainstyle safety tethers keeping the axles under the car anything more rigid would nullify the effect of the suspension is a very bad situation . At least if conventional suspension is out of calibration your car is maybe only a bit more wiggle prone than usual .