My 2007 GS350 has quite laud tire noise at low speed and unsmooth ride. I thought it was alignment problem and had the shop do the alignment. I was told that the alignment was nearly perfect and the problem was with the tires. All four tires had uneven wear on the inside edge—1/3 of the circumference on the inside edge is completely wear out, whereas the rest of the tire (including other part of the inside edge) has more than half of the tread life remaining. I did a Google search and found that Toyota had a class action settlement for the Dunlop SP Sport 4000 DSST and Bridgestone B380 FRT, both run-flat tire models. I wonder if any GS350 owners have the same tire problem as the one I am having. It is easy to see this problem on the front tires. You can also run your hands around the inner shoulder of the tires. You will find the tread wears significantly more on part of the inner shoulder.
