QUOTE (Lights @ Apr 28 2010, 19:09)

On paper, ofcourse your theory is explainable. Increasing rain while on worn inters, means less grip so less temperature. You can't 'work' the tyres in those circumstances. The difference is, Button made a mistake and went offtrack. In his opinion, this caused his tyre temperature to drop to a level that he couldn't work with them anymore in order to heat them up. Hamilton kept his tyres on a reasonable temperature so his tyres had more grip, and due to his driving style, perhaps is able to work with his tyres better in these conditions anyway. But again, for this to happen, it's not necessary for Button's tyres to be in worse shape. Tyre temperature can make so much difference, even more then the 1 sec a lap Hamilton was closing in with.
On those 2 pictures, Button's tyres are a bit better to see, indeed. Which also shows you can see more treads in the middle while on Hamilton's tyres it's just black. By that I'd conclude that if they were both visible, they'd look about the same. So your conclusion makes sense, if I could actually see it. It's a good theory but for this situation, there's no evidence making it a fact that Button's tyres were more worn then Hamilton's after the Chinese GP.
And next to that, you can't compare them in Malaysia either as they were on completely different strategies. Button had a much longer stint and therefor got more tyre wear. If you want to make a conclusion that Button is harder on his tyres in general than Lewis, I'd suggest you wait a little longer. Perhaps you're right.
But then it can't be all down to that, what made him go off in the first place? We know that Button is a sensible driver, he rarely makes mistakes and it usually takes alot to catch him out, could worn tyres simply have been the main culprit of his off? I wouldn't bet against it.
When Button was overtaken by Massa, he was on the harder more durable tyre while Hamilton was on the softer less durable one - this was during the latter stages of the race, and the hards can take alot of punishment, we know that, we saw what Hamilton did on them in Malaysia after overtaking several cars, his pace was still competitive despite that. Where Button was overtaken was at the hairpin where rear-end traction is important for a good exit and this happened despite being on the most durable compound. This is not the first time we've seen Button struggle with rear tyres though, we saw it in Hungary last year, his rears looked to be in horrible condition.
Malaysia and China are similar in that they have alot of corners which put alot of stress in the tyres load-wise, from what we've seen in Malaysia it wouldn't at all be a surprise if his treatment on the rear tyres did cause him to wear them quicker than Hamilton's, or more than he would've liked - it would fit in with what he said on the radio too. Both of his comments on the radio and in the press conference don't necessarily contradict.
The Barcelona circuit is also tough on tyres for the same reason the previous two races were, we'll see if this apparent trend continues or not.
As for now I think I've said everything I've wanted to say, it's been fun.