Note to luxury automobile manufacturers interested in entering the performance market: The world’s strategic reserve of performance-signifying alpha characters is dwindling fast. BMW has M locked up, Audi claimed RS, Cadillac took V, and greedy old Mercedes-Benz, acting with characteristic disregard for its comrades, took A, M, and G. Thank heaven the letter F was still available, or the Lexus LS460 F Sport might never have seen the light of day. Building a Better-Behaved Beast Whereas most manufacturers choose to first work their performance magic on the engine, Lexus virtually ignored it, placing the bulk of its engineering might into chassis mods. Building on the previous LS460’s Sport package, which offered some mild suspension and brake mods with a set of paddle shifters, Lexus has taken the exercise a step further, replacing bushings, adding bracing, and tweaking the shocks for even livelier performance. The latest LS460 F Sport sits 0.4 inch lower than a regular rea...