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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

Report: Justin Allgaier returning to JR Motorsports in 2020

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Justin Allgaier confirmed to Catchfence.com Friday that he will remain with JR Motorsports in 2020.

It will be Allgaier’s fifth season in the Xfinity Series with JRM.

“I will be back next year. Same deal,” Allgaier told Catchfence.com “Everything is good. We’re doing the same thing next that we are doing right now.”

Allgaier, 33, is fourth is the point standings entering this weekend’s race at Road America (3 p.m. Saturday on NBCSN).

Allgaier is the only driver in the top six in points without a win this year.

 

Xfinity Series practice report from Road America

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Christopher Bell was fastest in the final Xfinity Series practice Friday at Road America.

Bell posted a top speed of 108.562 mph around the road course.

The top five was completed by Matt DiBenedetto (108.106 mph), AJ Allmendinger (108.091), Justin Haley (107.927) and Cole Custer (107.895).

Chase Briscoe recorded the most laps in the session with 19.

The session was stopped with about 50 minutes left for a hard crash by Brandon Jones exiting Turn 11. Jones will go to a backup car for Saturday’s race.

Just before Jones’ wreck, the left-rear truck arm mount broke on Jeremy Clements‘ No. 51 Chevrolet and his car stalled on the track.

The red flag was brought out for the second time when Preston Pardus’ No. 43 Chevrolet stalled on the track. His car then stalled a second time in the final minute of the session.

The session had a third red flag when Josh Williams‘ car stalled on the track.

Click here for the practice report.

First Practice

Bell was fastest, posting a top speed of 108.559 mph around the road course.

The top five was completed by defending race winner Justin Allgaier (108.530 mph), Cindric (108.346), DiBenedetto (108.139) and Allmendinger (107.967).

Chase Briscoe recorded the most laps with 14.

The session was stopped once for debris with 35 minutes left in the session.

Minor incidents in the session included Noah Gragson briefly going off course and a spin by Dexter Bean.

Click here for the practice report.

Updated entry lists for Xfinity, Truck Series this weekend

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While the NASCAR Cup Series will be off this weekend, that doesn’t mean there won’t be any racing.

On the contrary, the Xfinity Series will be racing Saturday at Road America and the Truck Series will compete Sunday at Canadian Tire Motorsport Park.

Here are the entry lists for both series:

Xfinity – CTECH Manufacturing 180 (3 p.m. ET Saturday on NBCSN)

There are 38 cars entered.

Regan Smith will be in the No. 8 J.R. Motorsports Chevrolet.

A.J. Allmendinger will drive the No. 10 Kaulig Racing Chevrolet.

Saturday’s Cup runner-up, Matt DiBenedetto, will drive the No. 18 Joe Gibbs Racing Toyota.

Ryan Vargas is entered in JD Motorsports’ No. 4 Chevrolet for his second start of the year.

Click here for the entry list.

Trucks – Chevrolet Silverado 250 (2:30 p.m. ET Sunday on FS1)

There are only 29 Trucks listed for the entry list. A full field would be 32 trucks.

Alex Tagliani is entered in Kyle Busch Motorsports’ No. 51 Toyota for his first start of the year.

Dylan Lupton is entered in Young’s Motorsports’ No. 20 Chevrolet.

Click here for the entry list.

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Friday schedule for Xfinity Series at Road America

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The NASCAR Xfinity Series hits the track today with two practices at Road America in preparation for Saturday’s race.

The wunderground.com forecast for Friday calls for partly cloudy skies with a high of 69 degrees and a 10% chance of rain during the day.

Here is today’s schedule at Road America:

(All times are Eastern)

10:30 a.m. – 7 p.m. – Xfinity garage open

1:35 – 2:25 p.m. – Xfinity practice (NBC Sports App)

3:35 – 4:55 – Final Xfinity practice (NBC Sports App)