i have 195/65/15 on the driver side and i got 205/65/15 on teh passanger side and 205/65/15 on both rear tires. I wanted to know if the 195(driver side) and 205(pass side) is safe to drive, and will not mess up my tranny. I heard somewhere if you put your donut spare on the front with a full size it will mess up the tranny since they will rotate differently.