<VV> Better mileage with convertible top down!!

[mark at noakes.com]

John,

Convertibles are not exactly aerodynamic top up or down. Is it possible 
that with the top down that you drive more slowly? That could make more 
difference than aerodynamics at slower speeds.

I have a beater Corvette convertible. I almost always drive it more 
slowly when the top is down due to the wind turbulence in the interior 
and prefer to cruise the interstate with the top up.

Now if you're driving with the top down at 70mph and still getting 
better gas mileage...disregard my suggestion...

Mark N

On 8/21/11 6:51 AM, John Gull wrote:
> Ray and others, I am still in the testing phase but the last 3 weekends I
> have gone on 200 mile trips with the convert top down and have added 2 mpg
> to my usual average.  Maybe less drag coefficient? Why? I don't know for
> sure but I am willing to test more! Anyone else noticed this? Maybe ,then
> converts are better than coupes!  HAHA John Gull in the Blue ridge mts of NC
>