350z kit model 250% size

I was looking to print a larger version of the kit card that the original model had and ran into issues when scaling it up. The tires would alway mess up and were not touching completely on the bed. It was like the model wasn't completely flat when looking at the first layer. That led to me playing with the components of the model and coming up with this one. It doesn't have the trees or connectors like the kit does. The wheels slide into the tires easily and the model printed fine. I also have it set up for the AMS with 4 colors.