I have a 08 CX-9 GT with about 118000 miles on it.. about 50000 miles ago, I purchased some tires (pirelli scorpion STR's) from tirerack.com. Two weeks ago I noticed that my 2 front tires were badly worn on the insides. Worn to steel belt under the tread. It was an emergency to buy new tires again. The warranty was expired for about 5000 miles so I pretty much summed it up to "old tires". My rear tires were also changed about 50000 miles ago too.. The rear tires however have about 50% tread left on them. So I went to tirerack.com and ordered 2 new tires. I had them installed yesterday and my trustworthy mechanic told me that I had an issue with my tie rods (inner and outer). He said they were a critical part of a front end alignment. he also suggested that I have both sides replaced. They quoted me about $800 parts labor and alignment. I think that is a little high for short notice repair. I was able to find the parts online for about $150 shipped. I am wondering if anyone had these parts replaced on their CX-9 before and if so, did you do it yourself?? I consider myself very handy as I perform my own maintenance like oil changes, brakes, and I recently replaced my spark plugs. I want to attempt to replace the tie rods myself and only pay the mechanic for an alignment. Anyone have any thoughts on this?