Dirtydave - I plan to do so when it happens. You should too, when you, you know *cough* step up your aero game
2000mc - Yes. All figures have been adjusted for my larger tires. I'm now sure that the decrease came from taking my muffler off.
Edit: I want to clarify. I use the new tire height divided by the old tire height, both at new tread.
24.3/23.4 = 1.0385. This times my odometer mileage gives me my accurate approximate!
As the tires wear, I'll measure and drop the percentages.