I just purchased an ME880 for the front of my LT. The original BT020 was shot and cupped on both sides. I am not changing my rear as it looks good. I now am told that the front 880 is Bias and the BT020 on the rear is a radial. I called my dealership and was told you can mix the two. Does anyone have any info on this. I am going with my riding buddies next month to New Mexico, Arizona and Utah and do not want to have any trouble. If I have to change the rear, I will do so. The rear has plenty of tread left.