I am looking at the JConcepts Rulux 3333B wheels and I am wandering if they are durable, worth my money, etc. I had a bad experience with one of the stock wheels cracking in half on the landing of a jump. Would these wheels do that too? Are they more for on-road or off-road? Has anyone experienced one of these wheels cracking or something else bad happening? The 2.2" Buggy Dirt Hawg Tires will fit them, right?