I recently had to replace the four tires on my 2008 Outback due to having a screw near the sidewall. I replaced the four originals (225/55/17) with four 225/50/17's. The shop which I went to was the only shop open on a Sunday and that was the only closest size available. Will going from the 55's to 50's make much of a difference or does it even matter that much??