While checking your tires look for cracked sidewalls, bubbles/bulging, and check the tread. The manufacture will have different recommendation depending on your brand of discount tire so, check that as well, but rubber does deteriorate while excessive use and time.
Source: www.trucktrend.com
2. Before Getting A Discount Tire Inspect Your Vehicle
Before rushing out and getting a discount tire, conduct the inspection as stated. If you see signs of uneven wear, that might indicate alignment or other suspension issues. While checking the tire, look for things like more wear on the outside or inside of the tire. A tire should wear out evenly across the entire width of the tire tread.
If you install a new discount tire with bad alignment, or a vehicle with other issues, you just threw away the money you saved on the discount tire. The new tires will simply wear out quicker than they should and you’ll need to find another discount tire pretty soon!
Usually when you do get a discount tire and have it changed at the shop, they will inspect your wheels and give you an assessment. It is best to have your vehicle tires inspected before you go out and buy a new discount tire.
Source: www.reddit.com