I think it might be jagged if you're uploading a hi-res image and the forum software compresses it when it posts. Try uploading a lower-res (smaller file size) image and see if it fixes it. Would like to know if this is the case or not.
Really unusual colour finish - haven't seen anything like that before
Those tyres were on the car when I bought it. Over the years I have been through numerous makes of tyre and found the difference between budget tyres and premium tyres not worth the extra cost, I tend to go off the tyre euro rating for wet stopping (C and above) and noise rating (71db or lower).
When it is time to replace these the Falken (the 510s) is my prefered tyre.