Surely enough has been said about the bolts so that anyone interested should be able to make an enlightened decision. I really don't want to read any more opinions or data, what I'd really like is first hand experiences from those who have had bolt failure. Did they limp home or did they have to be flat bedded? What were the control problems when the bolt let go and the rear end dropped? Was there a loud noise to alert that something big was happening so that you would automatically react by reducing speed? Was there enough rear end clunking before the fact so that they knew after the fact that they should have paid better attention? The facts, as far as I have been able to determine (I did my homework): First of all, zero failure rate thus far on either the upgraded bolts the vendors are using or Toby's bolts. Secondly, actual bolt failure is a very tiny percentage (less than 5%), of course if yours should be one that fails you immediately go to 100%. Final figure is that a very high percentage of bolts are not perfect should you inspect them, best guestimate I can get is 30% to 50%. If you're a worrier, change your bolts, if you're a real worrier, get Toby's bolts.