Really nice model, so far only printed the cab section. Only hiccup was the Holes on the tires are a bit small compared to the pegs, suspension holes as well, But its a model and modelling is required! Great experience, will be buying more vehicles!
Cheers! Yes, the tire/axle fit is a bit tight because it's hard to gauge how other folk's 3D printers are for tolerances and loose wheels annoy me personally! Whip around the inside of the tire hole with an Xacto blade (carefully) for best fit - although sounds like you've figured that out already :)