Pit stops will change to single lug nut in 2021 season with NextGen car

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NASCAR will switch to a single lug nut for fastening its tire and wheel assemblies in Cup cars next season, ending decades of using a renowned five lug nut pattern.

An official told NBC Sports the move was driven by the new 18-inch aluminum wheels (3 inches bigger than the current wheel) that will be used with the NextGen car, which will make its debut with the 2021 season, and are intended to increase product relevance for manufacturers.

According to engineering analysis, NASCAR senior vice president of innovation John Probst said the durability of the new wheels decreases by 30 percent with five lug nuts.

“The answer became pretty clear that we needed to go single lug nut,” Probst said. “And I know that a lot of folks might say, ‘Well, if product relevance is your main goal, name me a car that has a single lug nut.’ I’m not sitting here saying I could, but I can name lots of cars that have 18-inch aluminum wheels. And that once we decided 18-inch aluminum wheels was the primary driver, the engineering solution was pretty clear.

(Photo by Sarah Crabill/NASCAR via Getty Images)

“It’s almost never the case that all five lug nuts are literally tight to the wheel, and if we don’t have five lug nuts tight to the wheel, the durability of an aluminum wheel drops. If all lug nuts could be guaranteed tight, five is a workable solution. With the pressure to do a very fast pit stop, I can’t say that we have knowledge that all five are ever completely 100% tight to the torque spec.”

Because of a higher torque, the pit gun will be applied longer to a single lug nut vs. five but still will take a shorter amount of time. NASCAR estimates that it will take roughly 0.5 seconds to remove the single lug (and the same time to reapply) vs. the 0.8-1.0 second for a top-flight tire changer removing five lug nuts (and running the pattern back on in the same time). So the move could drop four-tire pit stops consistently into the 10-second range.

Probst said most Cup teams are in favor of the move, which NASCAR hopes will allow teams to use wheels in multiple years (instead of multiple races with the current steel wheels). There has been some pushback from teams that cite the competitive advantages from investing money and time for training crews to change five lug nuts.

There also has been speculation on how such a move might impact the value of tire changers.

A Goodyear rendering of the 18-inch aluminum wheel with a single lug nut.

Unlike other racing series that use single lug nuts and allow tire changers to be in place before the stop (such as IndyCar), NASCAR is keeping the same pit stop procedures with a single lug nut. Probst said the choreography of scrambling from the right to left side should keep pit crew members in demand as highly skilled athletes who are among the most well-paid team members in NASCAR.

“Nobody’s done it, so I’m not sure anyone can have an informed opinion on how it’s going to affect them,” Probst said. “But there’s still a premium on getting from the pit wall to the right hand side of the car. That’s not going to change. You’re still going to have to get the nut off and back on as quickly as possible. That’s not going to change. You’re going to have to go from the right hand side to the left hand side of the car as quickly as possible.

“The amount of the time on a lug nut today is less than a second, but the time from the right hand side to left hand side is much more than that. So shaving off the time from the left to right side is going to have a bigger impact. I don’t anticipate myself in the near future changing tires. You’re still going to have a massive premium on speed because that’s going to determine the length of your pit stop. They’re still going to be professional athletes.”

Other notable elements from the move to a single lug nut:

–There will be no more postrace lug nut checks or lug nut penalties.

Gluing on lug nuts will become a thing of the past in Cup next season. (Photo by Sarah Crabill/Getty Images)

–Because the lug nut will be retained in the socket, the change from five lug nuts will end the practice of gluing lug nuts to the wheels, which will cut down on prerace preparation time (thousands of lug nuts are glued to wheels before races over the course of a season). It also should save time for practicing stops as teams could rotate a few sets of wheels instead of needing to glue lug nuts on a dozens of sets for a pit crew training session at their shops.

–Teams should be replacing wheels less often because five lug nuts deliver more of a pounding than a single lug nut – particularly when they aren’t tight and the wheel wobbles (which can cause the lug nut holes to deform). Aluminum also is less forgiving than the previously steel wheels, making a switch to a single lug nut more logical.

–The single lug nut will be used for the first time Monday and Tuesday during the NextGen test at Auto Club Speedway (with William Byron). But there will be no pit stops simulated under race conditions at the test.

–NASCAR has no plans to adjust pit crew or roster sizes. Though the tire and wheel assembly will be lighter, it won’t be in a significant measure that affects how the tires are delivered to the car.

Will chaos (and rain) reign on Daytona road course?

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The biggest unknown for Sunday’s inaugural Cup race on the Daytona road course?

Ryan Newman says “there are so many unknowns that it would be fabricating for me to tell you if I knew what the biggest unknown was.”

But with all the uncertainties heading into the race (3 p.m. ET on NBC) on a new course for Cup teams — and no practice — Newman is counting on one near certainty.

“I hope it rains,” he said. “I hope you add in the extra that we have to bolt on rain tires and we get something that is just spectacular. I hope that. The reality is that could be the biggest unknown that we have. We’re in Central Florida in the middle of August when it pretty much rains every day. We’ll see. I don’t know. I look forward to it.”

Good chance he gets his wish.

The wunderground.com forecast for Sunday calls for scattered thunderstorms throughout the afternoon. The green flag is scheduled to wave at 3:24 p.m. ET. There is a 58% chance of scattered thunderstorms at that time.

Will rain tires be needed for Sunday’s Cup race on the Daytona road course? They’ll be available. (Photo by Sarah Crabill/Getty Images)

Goodyear will bring rain tires for the weekend and teams will run in the rain, provided it is not a downpour and there is not lightning within an 8-mile radius of the track. Cup teams have never run a race on rain tires.

Only three times in Cup history have rain tires been employed. Dale Earnhardt and Mark Martin used them in a test in 1995 at Watkins Glen. Teams practiced and qualified on rain tires at Suzuka in 1997 for the exhibition race in Japan. Rain tires were last used in Cup for a practice session at Watkins Glen in 2000.

Rain or shine, the task of racing on a new course without practice will be challenging enough for competitors.

“On a scale of 1 to 10, 10 being difficult, this is a 10,” Kurt Busch told NBC Sports.

“I’m excited for the challenge, the uniqueness of it all, how it’s just crazy, basically.”

Said Chase Elliott, who won last year’s race on the Charlotte Motor Speedway Roval after crashing: I’ve never entered a race where you literally just have no idea what to expect.

Patience will be key. But not all 39 drivers will practice that equally when the green flag waves.

“I’ve got laps around that track without the extra chicane but that doesn’t mean I won’t haul off into Turn 1 and blow through the grass,” Newman said. “You don’t know. It will be more patience than aggressiveness I promise you by pretty much everyone. Those that don’t, you’ll notice.”

Kevin Harvick, who swept the Cup races at Michigan last weekend, will lead the field into Turn 1 and he’s not sure what to expect.

“I think me leading everybody into Turn 1 at Daytona could be interesting because I have no freaking clue where I’m going as we go down there,” he said. “Most everybody in the field is the same way.”

Turn 1 on the Daytona road course is a left-hand turn off the frontstretch just past pit exit. That begins the six-turn infield portion of the 3.61-mile course before cars return to the oval in what is its Turn 1. 

Teams stay on the oval through the backstretch before turning into the chicane there and going back on to the oval. A chicane was added off what is Turn 4 on the oval to help slow the cars before returning to the infield portion of the course. That was done for fear that the high speeds would wear the brakes over the race.

“I think it’s going to take everybody a little bit of time,” Matt Kenseth told NBC Sports. “I think there are going to be some people who have raced road courses a lot that probably feel more confident than others and possibly be overzealous and just charging it hard right away, and there’s probably going to be other people who are careful and see how many people slide into things. … It should be really interesting. If I was a fan, I’d be all about not having practice.”

Hailie Deegan: Road courses are ‘one of my stronger suits’

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Many drivers will be navigating the Daytona road course for the first time this weekend.

Hailie Deegan is not one of them.

Deegan, who competes in the ARCA Menards Series, will be in the field when the series takes to the 14-turn, 3.61-mile circuit for practice and a race Friday evening (5 p.m. ET on Trackpass).

“I’m pretty excited because this was not one of the races we had planned on our schedule,” Deegan told NBCSN’s Kelli Stavast earlier this week. “At the beginning of the year I saw all the races, obviously to see which ones you’re looking forward to, like your favorites and stuff and obviously this on wasn’t on there.  … I like road courses. I raced at Sonoma about twice (in ARCA Menards West). I was decent there, I qualified on the pole one of the times (2019) there against a lot of good drivers. It was a confirmation that, ‘Ok, we’re decent at road courses.'”

Deegan, who enters the race fourth in the point standings behind Michael Self, first got a shot at the road course at the beginning of the year. As a Ford development driver, she took part in multiple days of testing before competing in a Michelin Pilot Challenge race in a GT4 Mustang.

“I would not say I’m perfect at road courses,” Deegan said. “But I feel that’s one of my stronger suits. I’m trying to learn this whole stock car world. Circle track, everything like that, that’s all been a foreign concept. So everything I’m learning I’m learning for the first time. But when we go back to road courses, I grew up in go karting, I grew up racing off-road trucks on courses where you turn right and left. So that’s not a foreign concept to me. So I feel more comfortable on road courses, especially with us only getting an hour of practice and all the time I have on that track.

“I have so many days of practice from the beginning of the year on that track. Obviously, it’s a different car, a GT4 Mustang.  … It’s easy to drive, but hard to be fast in an IMSA car. (While) the stock cars are harder to drive, but you have that experience, I feel like you can have a little bit of an advantage over people.”

With eight races left in the season, Deegan will try to take that advantage to victory lane for his first career ARCA win. The last time she visited Daytona in February, she finished second in the season opener to Self.

NASCAR’s weekend schedule for Daytona road course

Daytona road course
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For the first time this weekend, NASCAR will compete on the Daytona road course.

All three of NASCAR’s national series and the ARCA Menards Series will take to the 14-turn, 3.61-mile circuit, culminating in Sunday’s Cup Series race.

This weekend takes the place of the race at Watkins Glen International for Cup and Xfinity.

Kevin Harvick will start on the pole for Sunday’s Cup race. Austin Cindric will lead the Xfinity field to green on Saturday.

Here is the weekend schedule for the Daytona road course.

(All times Eastern)

Thursday, Aug. 13

10:30 a.m. – ARCA driver-spotter-crew chief meeting (electronic communication)

11 – 11:30 a.m. – ARCA rookie meeting (teleconference)

11:30 a.m. – Noon – ARCA crew chief meeting (teleconference)

3 – 4 p.m. – ARCA haulers enter (screening in progress)

5:30 – 7:30 p.m. – Driver motorhome parking (screening in progress)

 

Friday, Aug. 14

9 a.m. – ARCA garage opens

9 a.m. – 4 p.m. – ARCA garage access screening in progress

2 – 3 p.m. – ARCA practice

3:30 p.m. – Xfinity rookie meeting (electronic communication)

4 p.m. – Xfinity driver-crew chief meeting (electronic communication)

4:50 p.m. – ARCA drivers report to their cars

5 p.m. – ARCA race; 28 laps/101.08 miles miles (MAVTV, Motor Racing Network)

6 p.m. – Truck Series driver-crew chief meeting (electronic communication)

7:30 p.m. – ARCA haulers exit

 

Saturday, Aug. 15

6 – 8:30 a.m. – Xfinity haulers enter (screening and equipment upload)

8:30 a.m. – Xfinity garage opens

8:30 a.m. – 2 p.m. – Garage screening in progress

2 – 4 p.m. – Truck Series haulers enter (screening in progress and equipment unload)

2:50 p.m. – Xfinity drivers report to cars

3 p.m. – Xfinity race; 52 laps/187.72 miles (NBCSN, Motor Racing Network, SiriusXM NASCAR Radio)

4 – 7 p.m. – Truck Series garage access screening in progress

4 – 8 p.m. – Truck Series garage open

4:30 – 5 p.m. – Truck Series rookie meeting (teleconference)

4:30 p.m. – Cup rookie meeting (electronic communication)

5 p.m. – Cup driver-crew chief meeting (electronic communication)

5:30 p.m. – Xfinity haulers exit

 

Sunday, Aug. 16

6 – 8 a.m. – Cup haulers enter (screening in progress and equipment unload)

8 a.m. – Cup garage opens

8 a.m. – 2 p.m.  – Cup garage access screening in progress

9 a.m. – Truck Series garage opens

9 – 11 a.m. – Truck Series garage access screening in progress

11:40 a.m. – Truck Series drivers report to vehicles

Noon – Truck Series race; 44 laps/158.85 miles (FS1, MRN, SiriusXM NASCAR Radio)

2:30 p.m. – Truck Series haulers exit

2:50 p.m. – Cup drivers report to cars

3 p.m. – Cup race; 65 laps/234.65 miles (NBC, MRN, SiriusXM NASCAR Radio)

6:30 p.m. – Cup haulers exit

NASCAR updates its COVID-19 guidelines

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NASCAR issued an update to teams to the sanctioning body’s COVID-19 guidelines this week.

If after 10 days, a NASCAR member is unable to produce two negative PCR tests, their return status may be medically reviewed by a NASCAR Consulting physician. Previously, a NASCAR member needed to have two negative tests more than 24 hours apart and a note from their physician to be cleared to compete.

MORE: Spencer Davis cleared to race after COVID-19 recovery

Truck Series driver Spencer Davis is the third driver to be cleared to resume racing after a positive test. He missed last week’s race at Michigan. Jimmie Johnson missed the Indianapolis race in July after a positive test. Brendan Gaughan is racing this weekend for the first time since he tested positive for COVID-19 in July.

NASCAR cites new guidelines from the Centers for Disease Control and Prevention with updating the sport’s COVID-19 guidelines.

“As we’ve said since our return, NASCAR’s health and safety plans will continue to evolve, with the goal remaining the same – a safe event for both our competitors and the communities in which we race,” said John Bobo, NASCAR vice president, racing operations, in a statement. “NASCAR will continue to implement and execute a comprehensive plan to ensure the health and safety of our competitors and the surrounding communities.”

Here are NASCAR’s updated COVID-19 guidelines:

Confirmed Positive Cases – Symptomatic and Asymptomatic Cases. Confirmed positive cases may return to racing activities after they have received two negative test results taken at least 24 hours apart.

A. If after 10 days, a NASCAR Member is unable to produce two negative PCR tests, their return status may be medically reviewed by a NASCAR Consulting physician.

  • New CDC guidance of July 22, 2020, recommends discontinuing PCR testing after the conclusion of the 10-day isolation period for the onset symptoms for the initial COVID-19 infection, if a person is fever-free for a minimum of 24 hours without the use of medication.
  • Please note: Based on advice from consulting physicians, NASCAR counts the 10 days from the date of the first positive PCR test for COVID-19.
  • In its guidance, CDC research indicates that in no instances yet discovered has there been a case where the virus is able to self-replicate beyond the 10th day following a positive test among individuals who are not immunosuppressed and did not have severe disease (e.g. requiring ICU stay or ventilation), so an individual in this situation poses no harm to others.  In the event that the individual continues to be tested, it is very likely that the individual will continue to return positive results.
  • Based on this new CDC guidance, NASCAR consulting physicians would review the individual’s situation and determine if they appropriately fit the CDC requirements before being allowed to return to racing without two negative PCR tests.

B. They must also have written clearance from their personal physician to resume all racing activity.

Confirmed exposure to a positive COVID-19 person. Those exposed individuals are required to stand-down from competition and self-isolate. They may return to racing activities after they have received one negative test. NASCAR in its discretion may request a second test for clearance based on the nature of the exposure. Please note: a confirmed exposure is based on a totality of the circumstances as determined by NASCAR in consultation with their consulting physicians. Analysis will include: identifying people exposed over the last 10 days, accumulated time greater than 10 minutes, direct skin contact (shaking hands, etc.), lack of social distancing and the level of PPE use among the individuals involved in the contact.