trailers with the wings on the back

not sure but i found out the 1's on the prime inc trailers can scratch up your mirror on passenger side if they arent closed when trying to back into a parking spot

 

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If they didn't work do you really think companies would be putting them on?

The Company claims 6.6% Fuel Savings at 65mph
Http://www.atdynamics.com/trailertail.htm

 

Yes they work but they are already old technology, there are new products on the market that create the same effect by creating an air jet. The new products are a lot more discrete and don't have to be folded and unfolded all the time.

 

Trailer tail/skirt combos can save around .5 mpg

 

if you get 6mpg, on 2000 miles that is 333 gal x $4 = $1,333 per week
6.5mpg @ 2000mi = 307 gal x $4 = $1,230 per week

so basically, you save about $100 per week, driving an average of 65mph, 52 weeks is about $5200

6.6% x 6 mpg = 6.36mpg or about $97.80/week in savings

how much do they cost,, parts and labor?

 

I always lol when i see ppl pulling them disengaged just as an ##