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Goodyear tire info for NASCAR at Auto Club Speedway

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NASCAR makes its first visit to a 2-mile speedway this weekend as it closes out the West Coast Swing at Auto Club Speedway.

Both Cup and Xfinity teams will be in action and they will each have a new tire combination.

While both series used this left-side tire code at Darlington last year, this is the first time they will use this right-side tire code. Compared to what was run at Auto Club last year, both the left and right-side tire feature construction updates to bring them in line with what is run at other speedways.

The right-side tire is a multi-zone tread tire, featuring two distinct tread compounds on the same tire — one for heat and wear resistance on the inboard two inches of the tread (Endurance Zone) and one for grip on the outboard 10 inches (Traction Zone).

“Fontana presents multiple challenges for teams as far as tires are concerned,” said Greg Stucker, Goodyear’s director of racing in a press release. “First, with NASCAR’s new rules package and more downforce on the Cup cars, observing our minimum recommended air pressures becomes even more important. Teams are always looking to add grip at Fontana, and one way they do that is by dropping the air pressures, particularly in the left-side tires.

“While we have made some updates to our constructions over the past several seasons, low air can still cause problems. Going low on air causes the sidewall of the tire to over-deflect early in a run and weaken its structure, creating a potential problem later. Secondly at Fontana, you have a track surface that wears tires heavily. The fall-off is around three seconds a lap over the course of a fuel run, so tire management will come into play all day.”

The tire combination is a result of a tire test in January that included Joey Logano, Daniel Suarez and Martin Truex Jr.

As on all NASCAR ovals greater than 1 mile in length, teams are required to run liners in all four tire positions at Auto Club. Air pressure in those inner liners should be 12-25 psi greater than that of the outer tire.

Here’s the tire info for this week:

Set limits: Cup: three sets for practice, one set for qualifying and 11 sets for race; Xfinity: eight sets for the event

Tire Codes: Left-side – D-4834; Right-side – D-4838

Tire Circumference: Left-side – 2,227 mm (87.68 in.); Right-side – 2,251 mm (88.62 in.)

Minimum Recommended Inflation: Left Front – 19 psi; Left Rear – 19 psi; Right Front – 45 psi; Right Rear – 42 psi

Kyle Busch has idea for NASCAR’s Xfinity, Truck limits

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MARTINSVILLE, Va. – Kyle Busch would entertain the opportunity to pursue the one NASCAR championship that has eluded him – in the Gander Outdoor Truck Series – when his Cup career is over.

But he’s got an idea that would allow him to run both series concurrently and address the limits on Cup drivers running in lower series.

“Why don’t you let us run as many races as we want to run and then once we miss one, we’re done?” Busch pondered after his victory Saturday in the TruNorth Global 250 truck race at Martinsville Speedway. “So if I go all the way to (the June 15 race at Iowa Speedway) in the trucks and run 10 races and can’t go to Iowa, I’m done.

“You can race for points or whatever and so if that ever came down to that, then maybe there’d be an opportunity years down the road that then you can run multiple series and try to go after a championship that way.”

What was NASCAR’s reaction to the plan?

“That’s probably the first time I’ve said that or thought about it,” Busch said with a laugh. “Now that it’s out there … there’s not a damn fan that’s ever going to let it happen.”

Indeed, Busch’s 201st career victory in a NASCAR national series drew the usual outrage on social media Saturday, both from his Rowdy Nation legion of fans and those who vehemently believe he should be limited beyond the NASCAR cap of five truck races and seven Xfinity races allowed for full-time Cup drivers.

Busch has won in seven of 11 starts in trucks, Xfinity and Cup this season.

“Could have been nine or 10 (victories) probably, that’s what the scary part is if it wasn’t for simple mistakes,” Busch said. “Overall, it’s been fun. It’s a damn shame I’m only allowed five and seven.”

Busch has two 2019 starts left in trucks: at Texas Motor Speedway next week and Charlotte Motor Speedway in May.

He said the chances are solid for going 5 for 5.

“I’d like to think Texas is a good place,” he said. “I think our guys have a good baseline. Charlotte is always one of my best tracks, favorite tracks and enjoy running there with the trucks, especially. There’s a good opportunity.

“It’s kind of an expectation (to win every race). We just go out, work hard and smart, and today we let the race play itself out and come to us.”

Busch won the 2009 Xfinity championship in the last season in which he ran full time in NASCAR’s top two series. He has focused solely on Cup full time since then, and NASCAR has changed rules over the past eight years limiting the ability to run for more than one title.

Despite 148 starts (and 54 victories), he is yet to run a full truck season, but the 2015 Cup champion has said he’d like to become the first driver to win a championship in each of NASCAR’s top three series.

Three Cup cars fail prerace inspection at Martinsville Speedway

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MARTINSVILLE, Va. — The cars of William Byron, DJ Kennington and Jeb Burton failed inspection Sunday morning at Martinsville Speedway.

Byron’s No. 24 Chevrolet failed mechanical measurements. His sixth-place qualifying time will be disallowed, and he will have to start from the rear.

Kennington failed the OSS. He qualified 34th.

Burton had qualified 33rd.

The three cars will officially start behind those that passed inspection. Cars that qualified behind them will move up one spot.

The No. 24 suffered a right-front tire problem in the opening minutes of first practice Saturday morning, and the team made repairs to put the car back on track.

Today’s Cup race at Martinsville Speedway: Start time, lineup, more

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MARTINSVILLE — High downforce could bring hot tempers to Martinsville Speedway, where today’s STP 500 will mark the first short track of the 2019 Cup schedule.

In the last visit to the 0.526-mile oval, Joey Logano bumped Martin Truex Jr. aside entering the last two corners in one of the most thrilling finishes of the 2018 season.

Here’s the pertinent information for today’s race:

(All times are Eastern)

START: Robert DeRidder, the senior vice president and general manager of Energizer Holdings Inc. (owners of STP), will give the command to start engines at 2:01 p.m. The green flag is scheduled for 2:07 p.m.

PRERACE: The crew chief and drivers meeting is at noon. Driver introductions will begin at 1:20 p.m. The invocation will be given by track chaplain Mike Hatfield at 1:54 p.m. The 380th Army Band will perform the national anthem at 1:55 p.m.

DISTANCE: The race is 500 laps (263 miles) around the 0.526-mile track.

STAGES: Stage 1 ends on Lap 130. Stage 2 ends on Lap 260.

TV/RADIO: FS1 will broadcast the race with coverage beginning at 12:30 p.m. Motor Racing Network will broadcast the race. MRN’s coverage begins at 1 p.m. SiriusXM NASCAR Radio will carry MRN’s broadcast, which is also available at MRN.com.

FORECAST: wunderground.com calls for partly cloudy skies with a high of 63 degrees and a zero percent chance of rain for the start of the race.

LAST TIME: In a race delayed to Monday by a snowstorm, Clint Bowyer scored his first victory for Stewart-Haas Racing. Kyle Busch finished second. Ryan Blaney placed third. Joey Logano won at Martinsville last fall. Denny Hamlin placed second. Martin Truex Jr. was third. 

TO THE REAR: William Byron (mechanical measurements), DJ Kennington (OSS) and Jeb Burton will start from the rear after failing inspection Sunday morning.

STARTING LINEUP: Click here for the starting lineup.

Cup starting lineup at Martinsville

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Fords flexed their muscle during Saturday’s qualifying, grabbing the first four spots and six of the first 11 for Sunday’s STP 500 at Martinsville Speedway.

Joey Logano will start from the pole, alongside Aric Almirola. Brad Keselowski will start in Row 2, alongside Kevin Harvick.

Row 3 will have Denny Hamlin and William Byron. Kyle Larson and Chase Elliott make up Row 4, while Martin Truex Jr. and Daniel Suarez will start from Row 5.

Click here for the full row-by-row Cup starting lineup.

Note that the starting lineup is provisional until Sunday morning’s pre-race inspection. Any car that fails inspection will lose its starting spot and move to the back of the field.

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