I believe you should be able to incorporate the cost of 215's into a lease. The question is do you want to? They are probably around 6-7k from the dealer. I incorporated a dealer installed hitch into my lease, cost me 15 bucks a month or something. I do not see why they wouldn't let you.

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2011 50i BS/Black Nevada
(gone) 2007 4.8i AW/Tobacco