Although spotlight in the world championship battle was on the differing tyre performance of the top two teams by the end of the season, there was an intriguing undercurrent of aerodynamic and chassis development among the entire field and throughout the year.
Aided by a stable set of chassis rules, the teams pressed the definition of the technical regulations harder than at any point in recent years. In fact, not since the ban on active driver aids has the technical aspect of the sport created so many headlines.
After a raft of changes in 2005 to front wing heights, rear wing placement, and diffuser design, no real aerodynamic rule changes were made for 2006.
As the year progressed, teams converged on similar solutions. By and large these solutions were aimed at reducing drag and not creating downforce per se. As the cars had less power this year, they no longer had the surplus to carry large wings to improve lap times. Thus, the cars had to be more efficient at creating downforce.