So, thicker sections appear to be a way to increase downforce, but what about drag? Clearly, increases in downforce will lead to increased drag anyway. What can be illustrated from these evaluations is that the thicker wing sections, not at all surprisingly, generate greater ‘profile drag’, and we ca get an idea of how profile drag changes by looking at the drag calculated by 2D CFD (although as we have seen this is not the full drag picture).