The wheels are a little bit off: they're 17" wheels on the 1:1 and work out to about 16.5" on the model.
I also checked the tires themselves (255/50-17) and they're a little small in diameter (27" vs. about 25.875") and width (10" vs. 9") as well.
Finally, looking at the model closer I think they didn't get the wheel arch shape quite right on the model - compare with the 1:1 photo linked in the original post - making the wheels look even a little smaller.
I also checked the tires themselves (255/50-17) and they're a little small in diameter (27" vs. about 25.875") and width (10" vs. 9") as well.
Finally, looking at the model closer I think they didn't get the wheel arch shape quite right on the model - compare with the 1:1 photo linked in the original post - making the wheels look even a little smaller.