Thanks, sor - that crossed my mind, but in seeing the fairly large spread on my worksheet (attached) even for the same tire just depending on brand, and then the error in guessing if it was close to BMW's specs, I was hoping someone with knowledge of BMW tire weights could share a definitive list. You would think that type of tire spec sheet has to be somewhere, and it would sure make this simpler and more accurate, especially if only 5-10 lbs has a significant effect at the wheel (I have no idea if it does or doesn't).
