Haven't seen this combo yet, so I might as well post it.
Rulux Half-Ups 1/2 offset with AKA cityblocks:
Haven't tested them yet, but should be great on carpet/grass...
Then there's my asphalt setup with hpi blast and hpi phaltline tires:
And this is a nice setup for sandy conditions. Pro-line crimefighters on velocity wheels 1/2 offset: