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Make sure you grab a screenshot asap of the seller's advert page on eBay - It may provide helpful evidence if a dispute escalates.
Although the details of the ET etc may not match what the wheel should be, the title is clearly misleading even if it wasn't intentional. It could be the result of the seller's ignorance.
Obviously try and come to an amicable agreement - The fact that you have attempted to do so would greatly strengthen any subsequent judgement in your favour.