Hey guys, have a 2006 Honda Accord coupe that's in excellent shape. I got a piece of metal stuck in the tire over the weekend and its going to have to be replaced. The tires are Michelin Primacy MXM4's with roughly 35k on them and about 6/32nds remaining of tread life. I bought them from Discount Tire in 2011 and they'll prorate the bad one for $55. I'm wondering whether it makes sense to replace the one or all four? As a former ASE master mechanic it annoys me to just replace one tire but by the same token the remaining tires still have some decent life in them. Thoughts? Btw, I have a Tuf Shine kit I'm dying to use and here's an opportunity....