Recently was testing a skin and I discovered that the tire normal doesn't work on High/Very High Shaders but they work completely fine on Low/Very Low shaders. This means that any custom tires look flat on high shaders. Please refer to the below screenshots. 
The above picture is high shaders.
This is low shaders.
Hope this can be resolved in the coming updates 
Hello @rngeekerd thanks for reporting this issue with the tire texture and shaders, nice design too.
I will report this to our TMN team, thanks for the comparison images they are very helpful.
Can I also ask, did you design this entire car in the game's edit skin mode, or did you import any custom textures and 3d files, so we can pass this information on?
If you could also link us to your custom car skin file, that would be helpful also, thanks.
@rngeekerd Thanks for getting those wheel files to us! I've gone ahead and reported this issue to the team. Once we hear back or have any updates regarding this, we will let you know here. In the meantime, let me know if you have any other questions.
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