You've heard of iced-out chains, watches and teeth ... but how about a freakin' iced-out STEERING WHEEL!?!
MLB rising superstar Wander Franco -- the former top prospect in baseball -- is bringing new meaning to car customization ... by copping a brand new Mercedes Benz AMG GLE 53 -- with a steering wheel decked out in diamonds!!
TMZ Sports has learned ... the Tampa Bay Rays shortstop wanted a one-of-a-kind whip, so he put together a team of specialists to personalize the Benz from top to bottom.