Ok another drag radial question, I have decided to run them @ 18psi and go lower form there, but now im starting to think of another "problem" i punched in the numbers into the miata tire calculator and with the 215 45 17 tires and rims im going at 96mph through the traps. When i type in 205 50 15 it says that when my speedo says 60 i will be actually going 56.xx mph. Being that 4th end at 100, will i be banging of the limiter at the end? Not that ill be trapping at 100, but the smaller tires will change the gearing, so im curious if be off the limiter? Also i do think the smalller wheels will increase my trap a little, am i right or is this just a rumor?