Rota Motor, You will definately have no issues with 18's on the car and they will hold the load the car is designed for, they bring 18's out on them as an option these days. The Maloo has 19's and not sure about the Pursuit but im guessing they could possibly be 19's aswell and they have no drama's carrying loads. There are literally 100's of utes both Commodores and Falcons with 18,19 & 20 inch rims getting around so you should have no worries with the 18's. The main thing (Well NRMA told me, not sure about others) is the width of the rim on certain vehicles, find out what you insurance company will allow. The best thing I can suggest is just ring your insurance company and ask all the questions you have concerns about and they will set you on the right path. Cheers, Greg