I don’t think too much needs to be done really. Simply make everyone in qualifying hand back their least worn set of option tyres, and have them replaced with a new set. That way there is no point saving a set, you might as well use it as you will still get a new set.
In terms of the actual tyres, they are fine how they are in terms of rate of degradation, I just feel there should be a little less difference in rate of degradation between someone pushing and someone conserving, so drivers can push a bit more, and ofcourse it would be better if they held up a bit better in dirty air.
