Hyundai Motor India — Ordinary fifth wheel

Dear Sir I Purchased two xcent cars in june 2015 from khanna Hyundai swaroop nagar Kanpur. took the delivery from khanna Unnao showroom. I purchased xcent S Option model which is alloy wheel model but the fifth wheel is not alloy its only a normal ordinary wheel. Why ? Kindly let me know why fifth wheel is not a alloy wheel. One car was purchsed in the name of Santosh Kumar Bajpai and other was in the name of Rajeev Bajpai...