When I first bought my car, the wheels were on the PO's garage floor. I was tired with a long ways to go, and I grabbed the first four tires. I installed them on the car and stuck the extra in the trunk. I recently pulled the tires off to sandblast the wheels. When I layed them on their side i realized one of the wheels is not a wide as the others. I am guessing this is the spare, correct? Was this normal for this year? All five wheels have a diameter of 16 1/6". The width on four measures 6 5/8, and the fifth wheel measures 5 5/8. Would the tire size be different for the spare?