I've tried to apply a Vray material in Cinema 4D r19 on the curbs but it does not fit properly, I can manage it if the line is straight but when it come to the turn the texture flips and gets messy. I've tried diferent UV options from UVW Mapping to Cubic.
How was the curb generated? If its a sweep or a loft that should work. If its a deform you have to apply the texture with the object straight and then use a sticktexture tag to "record" the position of the map hooked to those UV's and then do the deform.
I don't think it has much to do with the Vray texture, but more the order of the UV's in the original model.