Apparently Hulk with a slow puncture. (According to some users on Autosport forums)
Anyways... It doesn't really excuse Pirelli if it is indeed the kerbs. This shouldn't be happening either way - some drivers simply prefer using more of the kerbing than others, so why on earth should they be punished for that? Its like playing Russian roulette for them... Its rubbish.
Terrible news... Not to sound disrespectful but the crash didnt look that serious, certainly considering some of the other wrecks we have seen in the past.
Ollie Gavin (was behind the Aston at that time) suggested that it could have maybe hit a tree behind the barriers as they are quite close.
Hamilton or no Hamilton, when a driver has to tell its engineer that he, "cant go any slower" in whats meant to be the pinnacle of motorsport, then there is definitely something wrong.
Whatever though, Mercedes have no idea themselves why the car is so pathetic on its tyres, so I am not gonna call for a witch hunt on Pirelli.
Ferrari and Lotus seem to have it figured it out, and thats already better than Vettel cruising to easy wins IMO. Rather have some competition than no competition at all.