Hi,

So, i've modeled one car with NURBs, and used a displacement map for the tires, they worked preety fine.
But then, to make the logo, i created a small patch, below the hood at the front and created another displacement map, in order to pull out just the edges of the logo, but this one doesnt render propperly. In maya software it renders as it should, but with mental ray it doesnt.

I have uploaded some renders below.
The ones with the hole car in mental ray, i "cheated", and re-rendered the zone of the logo with maya software, so you see the hole car in mental ray, and then the logo re-rendered in maya software.

The images with just the logo, i temporarely atributed the file of the displacement map as color of the material, to check if it was correct.

I already checked the normals and they are correct.

What i cant understand is why the tires rendered properly and the logo doesnt.
Please need help ASAP.

Thank you