If you are replacing only one tire, then absolutely not, do not do this. It is recommended that you replace tires in axle sets, meaning, both front tires or both back tires, as you will cause problems with your driveability, transmission, handling, braking, etc. If you don't. As for the size, it is best to replace tires with the same size that originally came on the car.
The difference between P205/60R15 and P215/60R15 will be that the P215 will be a wider tread (215 does NOT denote the overall height of the tire, but the tread width, in millimeters). If you replace a P215 with one of more narrow tread, a tire tech. Will probably have problems getting the bead on the tire to seat on your rim, and it will be unstable, meaning that none of the speed, traction, treadwear and temperature ratings will be accurate, unless you also replace the rims.
The difference between P205/60R15 and P215/60R15 will be that the P215 will be a wider tread (215 does NOT denote the overall height of the tire, but the tread width, in millimeters). If you replace a P215 with one of more narrow tread, a tire tech. Will probably have problems getting the bead on the tire to seat on your rim, and it will be unstable, meaning that none of the speed, traction, treadwear and temperature ratings will be accurate, unless you also replace the rims.
