My last three truck renders, with this great oldschool scania.
A few things that popped out at first glance. In the second image the back tires are floating. Also, the material on the tire could use some more work, it doesn't have a rubber feel to it. Also, the backplate on the first two, you can see where you blurred the backplate the image is sharp around the truck then blurs and the passenger side window the backplate is sharp and the rest is not.
yep you are right about the blured parts, I didn't care so much about them. In the second render the tire is upper because is a liftable wheel, it isn't a mistake.