So with this good weather upon us we can see spring is near........ And that means track days are coming up. Now with that in mind I wanted to get some info from the veterans on tire size for the drag strip. Looking at drag radials for strip use and wanted to ask about tire diameter. My cars a 2011 Mustang GT, 6mt with 3:55 gears. Stock tires are 27" in diameter. Am I correct to be looking for strip tires that are smaller in diameter then stock? Some time back fast Ed told me diameter works like gears. I'm just unsure what I should be looking for. As always any help is appreciated.