If you use V-Ray 3.0 and less - in BRDF Select Blinn, Phong or Ward.
If you use V-Ray 3.1 and above , in the field will be applied Microfaset GTR ( GGX )
files: max2014, obj and mtl (and fbx), textures (archived) Turbosmooth: viewport-1 / render-2
If something is missing please contact with me
Polys: 402 765
Verts: 290 496