Tire Rack has the OE Yokohama Advan Neova AD07 on sale for 508.38! That's an incredible price (40% regular price). :scared: I ordered a set and don't even need them now. I was thinking about ordering two sets.
They sure do. I have heard 8 years. Something like that. And they need to be stored in the dark, not too hot, sealed bags would be best.
Make sure you store them above freezing (preferably) or at least above 14 deg F (-10C) or they will get damaged. They will turn into a crumbly hockey puck.