BRISTOL, UNITED KINGDOM - OCTOBER 22: Striking postal workers watch a lorry pass on a picket line outside a mail distribution centre on October 22, 2009 in Bristol, England. The first national postal strike in two years commenced at 4am this morning following the breakdown of talks between the CWU and Royal Mail management aimed at averting industrial action. In a press conference held last night Union leaders blamed Royal Mail executives and Business Secretary Lord Mandelson for the failure to reach a settlement. (Photo by Matt Cardy/Getty Images)

Street cam in China filmed a semi-truck turning a corner, and then one of its massive tires falls off and rolls down the street . . . and OVER a worker who had his back turned.

It’s a 400-pound tire and it flattened him . . . but he wasn’t seriously injured.