He may be a big wheel - but that doesn't mean his ride can't get stolen.

Mayor Bloomberg's 2001 Lexus was swiped early Monday - for the second time in a little more than a year, law-enforcement sources disclosed yesterday.

The gray Lexus LS430 disappeared between midnight and 5 a.m. from the Central Parking System garage on East 58th Street between Park and Lexington avenues, the sources said.

It was found yesterday morning at a bus stop at 218th Street and Broadway in Inwood. The car, which is parked at the garage regularly, is used mostly by the mayor's ex-wife, Susan Brown Bloomberg, the sources said. The billionaire mayor, who has six vehicles registered in his name, says he hasn't used it in years.

When found, it had two tickets on it, and shopping bags loaded with holiday goodies that had been inside were gone, the sources said.

The car, parked on the garage's ground floor, stolen while the attendant was getting someone else's vehicle, employees said.

The thief sneaked into the office, took an electronic key and pressed it until it opened the door of a car - which just happened to belong to Hizzoner, the employees said.

On Oct. 18, 2006, the car was hijacked by two alleged druggies who didn't know whom it belonged to. It was taken in Hackensack, NJ, while Gladmiir Bosnjak, 62, who works in the mayor's Upper East Side home, was waiting to pick up Susan's Brown Bloomberg's maid.

Cops said that a 17-year-old girl approached Bosnjak and demanded money and that when Bosnjak refused, a man got in on the passenger's side and punched him in the face. Then the man and the teen drove off, only to abandon the car in nearby Fair Lawn.

Both were nabbed quickly. The girl was identified as a runaway from Phillipsburg, NJ., the man as Shawn Young, 35, an ex-con who wound up being picked up in Paterson on a warrant for failure to pay child support.

Cops said he and the girl had done drugs together and hijacked the car in order to get from Hackensack to Paterson.