Watch out for the hidden small print charges too
like to dispose of you old tyre =££ and so on
Re-cycling tyres in an environmentally friendly way is not cheap, that is why they charge for it, someone has to collect all the scrap casings, take them to a re-cycler where they are cutup and the steel extracted or used to fuel cement kiln etc etc none of which is cheap, the cement kiln near Birmingham cost 100's of millions £ to get built, you could always chuck it a hedge that would cost you nothing.
Environmental disposal charges of there for a reason, to preserve and protect our environment. And yes you have hit a nerve