Not that some members of the board have *ahem* 'bent' the rules before, but would anyone be willing to explain how a tire gets doped? My gut feeling is one is trying to make it softer. Can one dope a tire to make it harder? I know that running a heat cycle with a slick and then cooling it with water when it is hot is a method.

So, what chemicals are used for this or that? I'd like to know. Thanks.