Brembo brake facts: IndyCar at Sonoma

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At 2.38 miles, with a host of elevation changes and a number of tight corners, Sonoma Raceway is one of the more challenging courses the IZOD IndyCar Series faces.

Brembo outlines the brake facts before each race. For the GoPro Grand Prix of Sonoma (4 p.m. EST, Sunday, NBCSN), Turn 7, a 180-degree right-hand hairpin at the end of the fastest straight on the track, is one of the tightest turns the series faces all year. From an estimated initial speed of 158 mph, if not faster, cars need to slow to 44 mph within a 361-foot distance in 2.74 seconds. The maximum decleration carries 3.65 G’s on entry.

The two other toughest corners at Sonoma from a braking standpoint are Turns 9 and 11. Turn 9, the right-left chicane complex, sees the cars enter at 160 mph and slow to 63 within 292 feet in 2.02 seconds, at 4.29 G’s. At Turn 11, the final right-hander leading onto the front straight, initial speed of 145 goes down to 53 in 246 feet, in 1.89 seconds.

Time gained and lost on braking entering a corner can play a pivotal role in Saturday’s qualifying session, and also in Sunday’s race when it comes to overtaking opportunities.

IndyCar teams with NASCAR on IMS road course doubleheader in 2021

IndyCar NASCAR doubleheader 2021
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The NTT IndyCar Series will be sharing Indianapolis Motor Speedway with the NASCAR Cup Series in a race weekend doubleheader for the second consecutive season, but both series will be on the road course in August 2021.

IMS announced Wednesday that IndyCar will hold an Aug. 14, 2021 race on its 14-turn, 2.439-mile road course. It’ll be a day before NASCAR’s premier series runs the same layout for the first time after the Brickyard 400 was contested on the 2.5-mile oval for the first time in 27 years.

This season’s rescheduling of the IndyCar GMR Grand Prix to July 4, 2019 (a day before the Brickyard 400) led to the first NASCAR-IndyCar doubleheader weekend. The Xfinity Series also raced on the IMS road course for the first time July 4 after the IndyCar race ended.

INDYCAR AT IMS THIS WEEKEND: Harvest GP schedule, entry lists

IndyCar will be holding its second race weekend this year at the IMS road course Friday and Saturday with the Harvest GP.

“Our first NASCAR-INDYCAR weekend was a big success last July, with positive feedback from
our loyal fans who watched the races on NBC and from the drivers, teams and participants
involved,” IMS president Douglas Boles said in a statement. “The Xfinity Series’ debut on the IMS road course provided exactly the kind of thrilling action from the green to checkered flags that we anticipated, so we know the teams and drivers of the Cup Series will put on a great show as they turn left and right for the first time at IMS.

“We can’t wait to welcome back fans to see NASCAR and INDYCAR together during this
exciting weekend as we add another memorable chapter in the long, storied history of the
Indianapolis Motor Speedway.”

It also will mark the first NASCAR Cup-IndyCar doubleheader with a crowd as fans weren’t permitted at IMS in July because of the novel coronvavirus (COVID-19) pandemic.

Over the course of Wednesday, NASCAR is releasing its 36-race slate for next season. IndyCar has yet to release its full 2021 schedule.