by my calculations you could get the EXACT same shape out of 172 tris, thats without going into all the other things suggested by others edit- thought that might not be that usefull so i whipped this up in a minute or two (148 tris damn my calculations are crap)
- You could downsize it to 256 or 128 and it would be fine. - The amount of visual noise is way too much, its over kill. - Flat metal scratches applied to an uneven surface... It helps to have your wear and tear make sense. Some would be more protected then others. - Baking in the shadows will fight with the lighting in…