I too had the OEM, Advans which had bad inside wear on all 4 at 18K. The rest of the tire still had tread so I drove them until they had 24K. Well, when I went in for an oil change, I found I had been riding on the steel belts on the insides of all 4 tires, for god knows how long. I ordered the Bridgestone Potenza Pole Position 960's at Tire rack, for $203 each. Had and alignment done at Lexus ($119), and was told the the camber on these is meant to be slightly negative, so it's not unusual for this type of wear. Car drives great with new Bridgestones and much quieter, tracks better, etc. I only can hope I won't be replacing these again at 18K miles. I wonder if this car doesn't hold the alignment very well. Like to hear from others about this bad inside wear, alignment issues. thanks