If you were looking to grab a set of of four tires, such as NT01s, RS4s, R888s, etc., you can get up to 20% off. Promo runs through TOMORROW, September 3.
https://www.discounttire.com/promotions/labor-day
https://www.discounttiredirect.com/promotions/labor-day
This is the first time they've ever done a percentage discount which is way better than the typical $50-80 ones. On my new Rival S tires, I am getting back $270, for example.