WOW! Very bold looking! Nice
A few suggestions for you;
The road wheels look like they need more dimensionality to them. Right now they look like a series of flat parts layered on top of one another. Can you get more of the cast effect with the rounded spoke relief? Perhaps nock off some of the black edge shadow around the spokes? The hub of the road wheel looks like it is the same depth as the raised spokes too.
Here is a good image although it has a different style hub-
Another with the same style hub-
Overall, a lot of your details have (in my opinion) dark lines and shadows that are too overemphasized. Try a little less shadow surround to show the separate parts and add a bit more highlighted edges instead. The raised portal with the 4 over it on the turret looks really good. Compare it to the port on the forward hull side.
The weathering is FABULOUS!
I think if you could try to move away from outlines to establish parts and use subtle shading rather than those stark lines your tanks would really improve. And since they are already so nice that would really be something!
Linear Mode
