nail

Got a nail close to the side of the tire (see below). Do I really need to replace it? Cuz Walmart auto center says it cannot be patched. My CX-5 only got 16000 miles on it. :( Do I need to replace all 4 tires since it's touring AWD? What tires would you recommend if replacement is...

My air pressure on my front right has been very low for a couple of days now and yesterday as I was swapping my front bumper I found out that my tire was punctured. I've only had these tires for about 2-3 months and I know for a fact that the retailer will not cover nail punctures under...