He already has the wheels ( 18x7's ) He needs tyres that have the correct load rating for the car which is 88. He's trying to find an 18x7 tyre, preferably in 215 with a load rating of 88. He knows that he can select different profiles/width etc, but he needs to get the correct load rating to keep it road worthy. In VIC this is now one of the first things a Police officer looks at, they'll compare the weight loading on your placard to that on your tyres. If it's not a match - Unroadworthy Vehicle.