ok so I'm trying to find a tire of size 255/35/20 that will stretch for my rear wheel 20x12. I've tried like 3 different tires already and they somewhat stretch but it won't hold the air in for long. I already have a tire that came with the wheels when I bought them and that tire stretches perfect but the tire shops are telling me those tires go for 500-700 each! And I don't think I can pay that amount of money for 1 tire! Does anyone know of a much cheaper tire that's good for stretching? any help will be appreciated

 

I think I posted this in the wrong section. if admin can move it please