Our Delaware DMV inspection includes brake force balance testing. The sensors are also scales, which I didn't know until today. But the 2 young guys running the lane really dug the Manic Miata and offered to tell me the corner weights. These things have cars and trucks rolling across them all day every day, so I can't vouch for their complete accuracy.
But here are the results for a '96 Miata with the following:
- Full tank of gas
- Hard Dog dual diagonal rollbar
- Cold-side supercharger / intercooler
- AC compressor delete
- Corbeau FX-1 Pro seats
- Trailer hitch
- FM frame rails
This is the car alone, with me out of it. Throwing the results into a quick Excel sheet, I get the following:
So, 55 lbs F/R and 19 lbs L/R differential. About 2% F/R and less than 0.5% L/R... I really wish this was with me in the car. I'm actually surprised the LF corner was heaviest.
[edit] Kudos to the forum software for taking my Excel cut-n-paste and turning it into a picture with the correct layout.