Floyd Mayweather Gunning for $30 Mil Car Collection ... Adding 2 Sick New Whips

Floyd Mayweather is expanding his automotive empire -- 'cause he's thiiiis close to closing the deal on TWO ultra-rare $3 million rides ... TMZ Sports has learned.

We spoke with Mayweather's car guy Obi Okeke at Fusion Luxury Motors who tells us he's brought in a Pagani Huayra ($3.2 million) and an Aston Martin One-77 ($3.3 million) especially for the boxer.

"Floyd's car collections is worth about $16 million right now and he wants to push it up to $30 million, and the biggest challenge for me is to find him very special unique cars. So these two cars I've been working on getting for a while and they showed up in my showroom yesterday."

"Floyd has been waiting for them to come in and his plan is to buy both of them. I was told from Floyd to go out there and find something unique so I came up with these two cars for him."

Okeke tells us ... the body of the Pagani is made out of carbon-titanium ... and tops out at 230 mph.

The Aston Martin One-77 is one of only 77 in the world ... only 3 have made it to the U.S. Top speed is 220 mph.

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