id defo be putting tyres on ebay mate, much better chance of getting bigger money for them on there. but sadly 205 40 17s are dirt cheap mate, really popular size, brand new u can pick them up for 35-40quid for nankangs, sometimes cheaper for random never heard of brands. really good part worns in this size can be got for like 25quid fitted, its madness

and im not being a bastard, im just being realistic for ya, cos i myself have a set of 4 205 40 17s that i was going to sell separate from my wheels, but just aint worth paying to have them taken off. occasionally tho a full matching set might make ok money on ebay tho, so id be going down that route dude