Kenseth, Keselowski, Kurt Busch, 'Dinger conduct Vegas tire test

It's another sign that the 2015 NASCAR season is almost here.

On Monday, Kurt Busch, AJ Allmendinger, Matt Kenseth and Brad Keselowski participated in a one-day Goodyear tire test at Las Vegas Motor Speedway.

With no private team testing in '15, the track time had added importance.

"Last year at this time I think we had three or four tests on our plate and here we are with one until we go to Daytona," Paul Wolfe, Keselowski's crew chief, told NASCAR.com. "So yeah, (it’s) a very important test for us."