I wondered that same thing. The stabilzers are to level the truck and for extended/additional support (IMO, as I don't have experience operating an aerial device). Plus, a salesperson once told me it is better to leave the tires on the ground that 10 points of support are better than 4.
NOT trying to criticize, just my "learned" opinion and thought over the years. My department does not run an aerial device.
NOT trying to criticize, just my "learned" opinion and thought over the years. My department does not run an aerial device.