Improve fuel economy. How much they actually help, I'd be curious to know.
Primarily to improve fuel efficiency (0.5 to 2 MPG) and reduce road/wind noise. They also improve high speed stability and engine cooling to some extent.
I was working on my older sisters Saturn many years ago. Her air dam was falling off, so I removed it. Her car immediatly began over heating. I put it back on, with better fasteners, and told her to stop hitting the concrete things when she parks her car. The over heating stopped immediately.
Specifically for my 1958, each dam involved 3 screws (removable either with 10mm socket or Phillips head) and 2 clips. Using a flat-head screwdriver, one can gently remove the clips and reuse them.
I took those off when I took off the bigger dams as well - mostly because they integrate well with the dams, but were noticeable and a bit ungainly when they were left by themselves.
I wonder how much of an impact they have on stability? Think it’s at all noticeable at 75-85 mph? I doubt it but it has me thinking.
None. I am on a 7 state road trip. Doing 85 on highways. Steady as they come.
Yep, on german highways this truck runs up to 120mph. So I can't imagine it is unstable at US speeds even without the air dams.
Toyota Austria gives for the 2.8L Diesel with 205 horsepower a max speed of 175km/h. That is 109 mph. Given that the hybrid in the US has 325hp I think 120mph seems reasonable.Landcruiser does 120mph! That seems incredibly fast for a tall and upright, all-time 4WD SUV.
Nice tires? Which ones are they? More pics?
