thats the first time i've heard that about the tires, its interesting to know, i think you guys need to try and stop reading into these figures so much. Remember a dyno is only a tuning tool, the track and your MPH is a real test of the power your making and until we get a track we won't really know i guess! Dyno's can vary so much with their power readings just from the tiniest things, its nothing to get caught up on!