I'll have the inner tie rods checked. My tires are stock size P265/60/R18. I've read that the Toyo Supremes are not that good and that they are the cheapest Toyos. I wonder if upgrading to a Michelin might help? What are you running now that you got rid of your Toyos?
Last year I purchased a 2009 4Runner Limited with the XRES sport suspension. It had 31K mileage and brand new Toyo Spectrum tires. Upon driving the vehicle home, I noticed that I had to make constant (every 3 seconds or so) very slight steering corrections. This happens at all speeds over 30 mph...