If you are trying to decide between the NT05 and Invo, the NT05 will offer more grip in the dry with its softer compound, stiffer sidewall, and more aggressive tread. The Invo will last longer with a harder compound, 260 vs 200 treadwear, and deeper tread 10/32 to start vs 7/32 on the NT05. The Invo has a softer sidewall which will not handle as well but will give a better ride. I had the Invo for my last tire and it lasted me around 20k miles and I had no complaints. I replaced my Nittos with Dunlop Direzzas and I like the Dunlops for autocross a lot better, but they do ride harsher on the street, but I also dropped from a 275/40/18 to a 275/35/18. I think the Dunlop is pretty comparable to the NT05. I would recommend the Dunlops, but unfortunately they don't come in 20" sizes.
