i think they are 15x6. 215's would fit, but might bubble out a bit.

205 on 15x5.5 wheels bubble out for me, so im guessing yours will bubble out too. Try 205/60/15 like others mentioned. 205/55/15 i think are too small for my tastes... it lowers the car a bit, and gives me less sidewall in exchange for slightly quicker pickup.... but for my daily driver, i plan to go w/ more sidewall 205/60/15's for my next tires.