I am a complete novice when it comes to tyres and rims, but since getting my Patrol Ive become interested in the topic, particularly since being in the market for some new ones. During my research it seems a lot of people have 16" wheels in leiu of the stock 17". What is the reason people change size? Is there a disadvantage in having the stock size? I just assumed I'd keep the factory wheels and get better tyres, just curious why most threads I read it seems people run different sizes.