|
It's causing drag, for sure, but it's MUCH better than the whole bike exposed on top of the roof.
Look at the car from the front. How much extra is sticking out? Not much the way you have it now. That's what the air sees, expressed as Frontal Area. How cleanly the air departs the back end is expressed as Coefficient of Drag, or Cd. Multiply those to for total drag. What you have now makes Cd worse, but doesn't change FA. Mounting them on the roof makes both a lot worse. When you multiply those, you get hit twice.
__________________
11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles
|