Ray J -- My $250k Ferrari Wasn't Good Enough, So I Tricked It Out!

Ray J has made way too much money off his Kim K sex tape and other stuff, because he just blew a quarter-of-a-million bucks on a car and then spent another fortune tricking it out even more.

Ray J dropped $250k on a 458 Italia Ferrari, and immediately took it to the shop for a very expensive customization -- $35k to be exact.

He put special rims on the whip -- Giovannas. He put matte black strips on the side of the car, smoked out front lights and diamond stitched the seats ... not with real diamonds -- it's just a look.

Here's the thing. To us ... he made it look worse.

New money.