Possibly the best advantage of buying used tires is that you save money. You can save anywhere from 30-50% off from new tires when you get used ones.
If you only need to replace one tire on your car, buying a used one is an excellent way to avoid purchasing a complete set. If your other tires are still in good condition and you can find a used one that is in decent shape as well, this may be the ideal solution for you.
And the lower cost of used tires means you can buy a spare in case of a flat or accident. This peace of mind will make upcoming road trips a little less stressful.