[cbumpkin]

why does 2011 dakota have 18 inch wheels on the ground and have a 17 inch wheel for a spare?

 

[dakotaff]

As long as the diameter of the tire is the same, that's all that matters. I don't think Dodge put 18" spares on any of their trucks.

 

[Brian Brashears]

why does 2011 dakota have 18 inch wheels on the ground and have a 17 inch wheel for a spare?

I no longer carry my spare. Save probaby 80#'s.
I have rode side assist. They are going to put it on a roll back no matter what.