I'd like to know why with 10 speed transmissions, 10th gear isn't a taller overdrive than 0.636. Eighth, ninth, and tenth gear are all overdrives, why not have tenth closer to 0.50? I'm sure there is a logical explanation, and it likely has to do with diminishing returns and efficiency losses with such a tall overdrive, but if it was closer to 0.5 then the rear end ratios could offer the best of both worlds, making the 3.73 a better compromise for towing power and fuel efficiency. Surely they could lock out tenth gear in tow-haul mode, or something along those lines.
