I agree with Jo. If you are using the Sure Tracks for mostly on-road use with some light off-roading you should be just fine. I installed the Sure Track half shafts a few weeks before Moab this year and they are still going strong. The axles did fine on the highway out to Moab and did just great on the one trail that I did. It was an easy trail, mind you, but did get to push them a little bit with no issues. I am also running stock rims with slightly larger than stock tires so I don't have the rolling mass that Jo has on the ORW. It also seems that Jo's right foot is much heavier than mine (which may have helped to contribute to the axle failure).