Ok, about my truck. It is a 04, 3500 dually 4x4. I have 22. 5 alcoas with 255x70x22. 5"s for tires. So, there is probably a bit more wear on the berrings with the increased load. But, the truck had about 88k on it when they really got bad(wobbling). A dealer did the job for me. They charged $1042. 00 for the whole thing with tax and labor included. I am on gravel roads and dirt roads that are pretty muddy and washed out all the time during hunting season. So, if you consider that off-road use, then yes. So, what dose a typical Dynatrack kit cost? If it switches you back to the "normal" berrings on shaft type design then I think that it is defnitely worth it even if it is more. Then next time you need to replace the berrings it will only cost a fraction of the cost of replacing the whole assembly. Just my 10cents.