By Dave Lewadowski

Published: Jun 5, 2015

FORT WORTH, Texas — Verizon IndyCar Series teams are taking various approaches in their attempt to find efficient downforce with their Chevrolet and Honda superspeedway aerodynamic platforms on the 1.455-mile, high-banked Texas Motor Speedway oval in preparation for the Firestone 600 on June 6 (8 p.m. ET on NBCSN).

Experimentation during the late-morning practice included an asymmetrical rear wheel guard winglet (right side on No. 3 Chevrolet of Helio Castroneves and left side on No. 2 Chevrolet of Team Penske teammate Juan Pablo Montoya), two winglets on right side of No. 14 Honda of Takuma Sato and one of other side, and road course tire ramp flicks and underwing diffusers.

A sampling: