CONCORD, N.C. â€” A speed problem on the backstretch of Charlotte Motor Speedwayâ€™s new â€śrovalâ€ť course interrupted testing Tuesday for the Sept. 30 Bank of America Roval 400.
The playoff race on the 2.28-mile track, which combines portions of the CMS oval and the infield road course, will be a striking deviation from typical fall races, which always have been contested on the oval.
Tuesdayâ€™s problem developed at a backstretch chicane that was added to slow cars before they entered the third turn of the oval. NASCAR said drivers were rolling through the chicane area across rumble strips, in effect shortening the distance and generally maintaining speed.
To correct the issue, two more rows of rumble strips and a tire barrier were added to the area, making it impossible to â€śdefeatâ€ť the chicane and forcing drivers to slow down.
Numerous drivers and crew chiefs joined NASCAR and track officials in the chicane area to discuss and refine the changes.
Chicane work delayed the test, which was halted after Bubba Wallace lost control of his car and hit a tire barrier at the entrance to the road course. Wallaceâ€™s car received extensive right-side damage.
Because of the delay, NASCAR extended the test session from 5 to 6 p.m. ET.
The race, the third of the playoffs, will be 400 kilometers (109 laps).