Six Cup groups participated in a tire check on Tuesday on the concrete brief observe, and it stays unclear whether or not it resulted in any strong solutions or will immediate a change within the tires used for the subsequent occasion.
The Sept. 21 race shall be run at night time and serves as a cutoff race within the Spherical of 16 of the Cup Collection playoffs.
Within the race in March, Goodyear introduced the identical tire mixture that was utilized in final September’s race, but it surely turned clear early on the tire fall-off was laying no rubber on the observe, which resulted in unusually extreme tire put on.
Groups shortly found they couldn’t go greater than 47 to 50 laps earlier than they risked a tire cording to the purpose of dropping air stress.
Justin Haley, Rick Ware Racing, Ohanafy Ford Mustang, Daniel Suarez, Trackhouse Racing, Jockey Outdoor by Luke Bryan / Bassmaster Basic Chevrolet Camaro, Ryan Blaney, Staff Penske, Menards/Dutch Boy Ford Mustang and Denny Hamlin, Joe Gibbs Racing, Mavis Specific Oil Change Toyota Camry
Photograph by: Nigel Kinrade / NKP / Motorsport Photographs
A lot of Tuesday’s check targeted on attempting to find out how the traction compounds which were used on the Bristol observe relate to the tire’s efficiency.
“Goodyear realized the PJ1 was very useful for the tire and made it reside rather a lot longer. The resin that they ran final time doesn’t appear to let the rubber lay down and it simply dusts up,” stated driver Austin Dillon.
“Laying rubber down you may run longer runs. The tire felt nice, and we had good lap occasions. The tire did fall off fairly a bit. Over 30 laps it was virtually a second – fairly good falloff. That’s falling off quick sufficient to the place in case your automotive is a bit of higher than the subsequent man, you may sort of handle the tire and move the blokes in entrance of you.”
Chase Briscoe, driver of Stewart-Haas Racing’s No. 14 Ford, stated he nonetheless doesn’t fairly perceive why the March race performed out the way in which it did.
“It could be completely different if that was the primary Subsequent Gen race we ever had right here, however we’ve ran different races and by no means had that drawback. Now it’s like a factor to determine,” he stated. “Early within the day we may run 25 to 30 laps and there on the finish I ran 40 laps.
“If there have been extra vehicles right here, we’d’ve had extra rubber. It does create a singular problem and it places rather a lot within the driver’s arms. We don’t actually have this at different locations we go.”
Briscoe stated everybody realizes that the September night time race shall be run in cooler temperatures, which can change the dynamic of the race.
Nonetheless, even working in Tuesday’s hotter temperatures wasn’t producing anticipated ends in tire put on.
“The one factor that’s odd for me is that we have been in 85, 90-degree climate and nonetheless didn’t have that rubber construct up or that colour change (on the observe). I’ll let the blokes who’re method smarter than me determine that out,” he stated.
“It’s head-scratching for certain, attempting to see what’s modified right here in a yr. On the Evening Race, I believe you will note the identical typical similar Bristol racing the place we begin on the backside (lane) early after which by the tip you may run the highest and backside.”
RFK Racing’s Chris Buescher additionally thought the tires would final 40 to 60 laps with Tuesday’s increased temperatures.
“We felt like there was nonetheless some heavy put on, in order that they put the PJ1 down about midway by means of the day. I vote for the PJ1 and I’m a fan of it so long as it stays on the slender facet,” he stated.
“The PJ1 appears to wear down by means of a race weekend and the hope is that the groove will transfer round to the place we’ll begin chasing the center and the highest (lanes).”
Additionally collaborating in Tuesday’s check have been Rick Ware Racing’s Justin Haley, Spire Motorsports’ Corey LaJoie and Legacy Motor Membership’s John Hunter Nemechek.
