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Auto Club Speedway - Sports Car Circuit

Fontana, California, USA
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Miata
GT3 RS
FZ1
F1
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MX-5 Miata
911 GT3 RS 4.0
Yamaha FZ1
F1 Car
Length:
2.84 MI
4.57 KM
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*PLEASE NOTE* The racing lines and simulations shown here are based on a simplified analysis that does not incorporate 3D effects such as camber and elevation, track irregularities, or surface conditions. It assumes perfect grip and perfect pilot control. Always temper your approach to a racetrack with common sense and an awareness of your skill level. Be safe out there!
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Lap Times Explained

Each column represents a vehicle driven on different racing lines. For example, the first row of the first column is the time for the Miata driven on its own line. The second row represents the Miata driven on the Porsche's racing line, and so on. It is expected that when a vehicle is driven on its own line (large font) the lap time will be the quickest. Otherwise, Al has not done his job very well.

Vehicle
Line Miata GT3 RS Moto F1 beta
Miata 1'56.81 +1.48 +2.34 +0.20
GT3 RS +2.25 1'37.80 +0.95 +0.69
Moto +3.15 +0.67 1'39.41 +1.64
F1 +1.13 +1.58 +2.37 1'08.12

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Auto Club Speedway - Sports Car Circuit

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The Racing Line at Auto Club Speedway - Sports Car Circuit

Auto Club Speedway is a 2.0 mile, D-shaped superspeedway that hosts annual NASCAR events and some Indycar series. If you're reading this page, however, the real beauty of this track is an extensive interior road course with several possible configurations. For most track day and competitive events, the interior course is used in combination with Turns 1 and/or 2 of the superspeedway, resulting in the tight and technical being paired with the blistering speeds of the massive straight and 14-degree banked corners.

Unlike most facilities, Auto Club Speedway has dedicated layouts for cars and motorcycles. The Sports Car Circuit contains over half of the superspeedway track, including the monster banking in Turns 1 and 2. That's where underpowered cars can go from zero to hero as they fly around the high banking, leaving the more timid souls among us to trundle through down low where things are flatter and safer.

Just a couple notes about the racing line at Auto Club Speedway, apart from what's obvious from the diagram. There's a big piece of extra track laid out at the exit of Turn 6. Many drivers spill out on to this area as they drive out as hard as possible from 6, but for the most part that doesn't seem to be very helpful.

Turns 7 and 8 require only minimal braking, and non whatsoever for the Miata. Approaching 9, higher powered vehicles should be a bit left of mid-track, whereas the Miata enters 9 from the far left edge. Skipping ahead some, nobody actually needs to hit the apex at 14, as it would require slowing down unecessarily. Turns 17 through 21 should be treated as one giant left-hander, apexing at 17 and 19. Ignore the fool's apex at 18. After that, we get to play NASCAR and thunder on down the enormous straight prior to braking a bit for the banking at Turn 1.

Miata Challenge 2012

Founder's Notes

Drivers like entering Turn 5 wide and missing that first apex, but it should be quicker to hit it. Pretty similar to Al's line otherwise.

Joey Scarallo - Circuit Battles Lap Record

Founder's Notes

Oh yeah. It's not often that someone beats out Al's time for the GT3 RS, but Joey does it! He's probably pushing more horsepower but it's impressive nonetheless. He spills out pretty wide exiting 6, and it prevents him from being on the throttle as early as he could be. Also notice there is very little speed reduction leading up to 7/8.

Paul Dentice - Nissan 370Z Time Attack

Founder's Notes

Paul hits both apexes at Turns 5-6, which is good. Actually the whole line is good, except for running into the extra space after 6. Nice job on getting the record!

Nissan GTR Chasing Mclaren MP4 and Ferrari 458

Founder's Notes

The GTR is a bit underpowered here, but does a good job keeping up. There's several things about the lines I think could be improved. First, using the full track, especially in Turns 3-6. The driver is mid-track going into 5, and is also on the gas by the first apex. Instead, there should be trail braking all the way to mid-corner. I didn't really like anyone's line through Turn 9, either. The MP4 was out too wide, and the GTR was driving too much toward the outside of the track prior to turn-in.

Bryce Miller - 1'38.69 Pole Lap GT3 Cup 2011

Founder's Notes

A capital lap from Bryce Miller! A couple potential time savers: get on the gas earlier out of 13 to carry the car wide of the second apex. Then drive harder out of 17 in order to get all the way to the outside of the track, running slightly wide of the apex at 18 and hitting the apex at 19.