I have about 75000 miles ..but still have 80% left on my original front brake pads....and 30 % left on my original rear ones.........How can this be?????......Could it be my ABS brake system is mainly using my rear brakes....???..I noticed the brake is becoming a little weak....that is why I thought I needed new brake pads...but ....I saw with my own eyes!!! still 80% left on original pads......??? Does anyone else have this problem....If you did .....any suggestions????