Ok, time to break some ground. I posted this down in the 1st Gen area, but now I have moved the post to here with some more information, I gathered today. Today I spent some time at my local tire store in Boulder, Colorado (Tire Source on 30th St.), they cater to the race crowd in a big way. So all over the spectrum. I sized tires in 205/45/17 and 215/45/17. See my usage above. 205/45/17 pricing is approximate with m/b/new rubber stem. Bridgestone RE11 $172 Yokohama AD08 $193 Yokohama S-Drive $132 Michelin Exalto PE2 $143 (before $60 visa card). 215/45/17 pricing as above. Nitto NeoGen $97 Bridgestone RE11 $179 Falken Azenis Sport RT615? $132 Dunlop Direzza Star Spec $158 Hankook RS2 $142 Kumho XS $139 Yokohama A008 $201 My racing background says go sticky and go wide. The practical side says go UHP not EP and try to save a buck or two. :nonod: If they fit, I might go with the Kumho XS, but I'm really not sure how they will do as my general street tire. I will be mounting up a set of F1 GS-D3s on my 16s to use as my heavy lapping day tires, a little lighter wheel. Plus I will not scream as much if I munge up the 16s versus my 09 Challenge wheels. Thoughts, recommendations. I'm looking for real experience or very good input. Thanks in advance. I will probably order tires Wed. night or Thursday morning for a Friday install.