There may be a problem with your Corolla coilovers if your vehicle starts riding more rough as you make your way around town. Toyota Corolla coilovers work to absorb some of the shock when you are driving over terrain that is not very smooth. This part is a single unit that consists of the shock absorber and a coil spring so that you have optimal damping and allowance for torsional loads when you are driving the vehicle. If you notice that your vehicle, which normally rides smooth, is starting to take bumps and holes more roughly, you may want to look at the coilovers on your vehicle. It is important that you replace these if they are bad so that there is no risk of further issues occurring with the suspension components of your vehicle. It is important that you match the coilovers to the year of your Corolla so that you can ensure a seamless fit. Browse the vast inventory of Corolla coilovers on eBay to find the one that works for the year of your vehicle.