I don't know if they're the cheapest but Discount Tire has been getting all my business for the last 20 years, I spend well over $10k per year on tires between all the cars, trucks, and trailers I do and have never once had a problem with them. Plus I think they're a board sponsor as well.

 

I have had mine since Aug .They are a great tire .I drove a 1000 mile trip and no complaints.I am now driving in the snow and they seem to be fine,they were siped.They are also 37" They are a great tire for all types of terrain