I am new to this group. I am buying my first RAD. I chose the RAD RUNNER PLUS, (so I can put my teenage son on the back when needed)

I see so many accessories for this bike. Some I must buy from RAD to be 100 % constable, Like the Passenger pack and front basket. But others like inner tubes 20" x 3.3" might be easy to buy and cheaper at my local bike shop or sporting goods store?

How about mirrors? Do I really need to buy the RAD mirrors or can I mount a standard one.

Please advise.