I have really and truly had Pirelli in lumps and marbles too!
Martin Brundle's column following China
"The smoggy greyness of Shanghai was no match for the glittering bejewelled cars under the Bahrain lights. The perfectly judged mixture of tyre compounds in terms of grip and degradation two weeks ago became tyres which fell apart too quickly and covered the track in a carpet of rubber marbles, thereby preventing some overtaking opportunities.
Those same tyres meant that following in close formation in key corners was very difficult and therefore even the DRS low drag rear wings couldn't bring the cars into close combat."
http://www1.skysports.com/f1/report/...bastian-vettel