Quote:
Originally Posted by some_other_dave
Generally "spats" are the covers over the wheel arch, such as seen in old 40's cars and on the 1st-gen Honda Insight.
I've seen the tabs you are talking about called "wheel air dams" or "wheel dams", and there are probably more technical names for them as well.
-soD
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Spats, air dams, dams, tabs...it's all semantics. From the responses here, I guess I won't worry about adding any to my Sprinter air dam for now. Seems like more real world research is needed to determine possible benefits, not just computers and wind tunnels. I am planning on adding some in front of the rear tires as there are not any currently. I also may increase the size of the front wheel dams at some point. Thanks!