Ok here's my tank treads.

I can't tell if the v's are sticking up or down. Can someone tell me.

I just used a black and white bump map. I tried inverting the black/white but got the same result. It looks to me like the v's are sticking out downwards on the top of the track.

Can someone tell me what they think, and what I should do to make them stick upwards (if they're not).