I have the opportunity to get a great deal on two brands/sizes. First the BFG 275/40/17 DR, the other is M and H DR in size 275/50/17. I know the BFG has proved itself, and probably can't go wrong there, but I can't help but think that the M and H (28 in tire) extra sidewall may allow for a quicker launch while lessening the shock to the drivetrain. My last consideration is that I will lose some gear by virtue of a two inch taller tire( M and H). I Make 494 RWHP... opinions?