You glue up no more than 3-4 hours before the race so the glue (norton weather strip adhesive) stretches because it’s still tacky. (From a cup tire carrier 6 years) ;)

This picture is from where Brad Keselowski ran the 25 cup car for Hendrick motorsports(a limited race deal, 7 I think) Before Danica, Brad was sponsored by Go Daddy in the Nationwide 88 and the hms 25 cup car. For Hendrick, this was an R&D car that was on track purely to try out a new chassis that the 48,24,5,88 etc.…