They will hold up to the 33's with no problems. The only down side to the front is that the CV's are our weakest links. The reason is that on the first gens they have hubs which is really the weakest link for them but since we don't have any hubs the next weak link in our chain is the cv's. You really don't have anything to worry about as long as you aren't spinning the wheel to hard when the wheel is off of the ground and landing. That will cause a big enough shock load on it to snap it or when you are turning and all of a sudden get traction to that wheel which will then agian apply a big enough shock load on it to snap it.