When your car registration in California says july 2010, can you not drive the month of july?

Babette Deloe: Yes. Your car's registration is valid until 11:59 pm July 31, but it is extremely foolish to wait until the very last day to renew it. Give yourself time to resolve any problems (like the semi-annual smog certificate) that may pop up.

Ronny Dorge: you should be fine... just make sure you get your tag re-newed before the end of the month!