We were asked by a customer to supply the Compact Day Trolley with 8" wheels. He is delighted as he uses it over rough terrain when going for day paddles. The trolley is the same as supplied with the 160mm wheels. This trolley is not intended for rough terrain or fully laden kayaks. For fully laden sea kayaks and longer journeys over rough terrain please see our KCS-MARK 6 EXPEDITION / PRO EXPLORE