I have a 94 legend gs 4 door sedan. A year ago, I put the Koni adjustable shocks on the car all the way around. They are adjusted all the way and they are set for stock height. I put brand new Yokahama Avid 4's on all four corners. The two tires on the passenger side look like brand new still while the driver side front is really cupped on the inside and the rear driver side is almost as bad. The ball joints and upper control arms are all good with no play in them as well as wheel bearings. The inner and outer tie rod ends were replaced and a 4 wheel alignment done. This was all done about a year ago. Anyone else have weired tire ware and any suggestions as to what might be causing this. Any help would be greatly appreciated. ITS REALLY STARTING TO ENOY ME AND DRIVE ME CRAZY. I don't want to replace the 2 tires until I find out the cause and correct it.