I was on Toyota.com building a Rav4 Sport and when I selected a V6 engine, the rear door mounted tire disappeared. The only way to get the rear tire to disappear is to select the Rav4, Sport trim, and a V6 engine with 4WD. Are all Toyota Rav4 Sport V6's like this?

yes that is the upgraded models and alot of the time you choose bthe upgraded model they take away some of the small details or options