previous owner may have thought the tires rotate plenty just driving down the road.the front tires bear more weight, do about 70% of the stopping, and also must steer - they wear faster.
that's why the manual recommends rotating the tires.
Are you looking for the stock size for your Legacy Outback? If so we have a good selection depending on what you are looking for in your next tires. We will also be having a Labor day sale soon that will save you some money on a set of 4. Here is a link to the tires we have for you to review:I have a 99 legacy outback I purchased about a week ago and I knew it needed tires which isn't the problem. The question is, why do I only need new front tires if it is awd?