im gonna run more than 500 one of these days i know what the 5000 is capable of i just need some good tips so it will run good at my elevation and not to over kill, as my truck sits right now its not that bad to drive around town or on the highway i dont think pulling a heavy trailer would be a good idea, but it still drives just fine i want 750 one of these days i just need to start small and work up to that so im gonna try 200s,studs,and 55psi hopefully around 500 or so