Ever since I first came to Oppositelock, some of the most fun I’ve had with this community is taking part in races in Forza, particularly the endurance races. In 2016, they were organized into a full series. Now, for 2018, we’re doing it again with the best race cars of the 1960s. This is The Oppositelock Endurance Championship II! In this post, I have the specifics of the series, including the schedule and eligible cars. You can also begin to sign up for the series in this post.

As with the original Oppo Endurance Championship, this series is going to combine all of the one-off endurance races that are run throughout the year with a linked schedule, car list, and points championship. Despite the fact that there will be points, it is certainly not competitive racing or extremely aggressive racing. If you’re spending hours tuning your car weeks before a race you’re doing it wrong. Just have fun with it. People race in cars sponsored by Doug Dimmadome, finish the race in reverse, and do impromptu Le Mans starts. We’re pretty chill and just talk about cars and banter a lot of the time. That doesn’t stop us from having some great racing, though.


It is open to anyone and everyone. It doesn’t matter how good or bad you are at the game. We have people of all skill levels regularly race with us. It results in some great racing, too. These whole series, especially the endurance races, are some of the most fun I’ve ever had in Forza. Here are some pics from the previous Oppo Endurance Championship in 2016 showing the action.



This series will mimic the races of the World Sportscar Chmampionship of the 1960's and 1970's. All of the tracks that are both in Forza and that series’ calendar are included, with a few other tracks that seemed fitting to include. There will be a total of 12 rounds: seven 1.5 hour, three 2 hour, and two 2.4 hour races. Beforehand, there will be a ten minute qualifying session to set the grid. At the start of the actual race, there will be a formation lap, with the race start for each individual car when they reach the start/finish line. Yellow flag and caution rules will also be in effect.


They will be handled the same way as any of our other races. Drive like you are in an actual race, and not an online public matchmaking lobby, and you will be fine. If you are new to racing with us or need a refresher, take a look at SVTyler’s post on driving etiquette. If you follow those guidelines, you will be just fine in the race. In terms of assists and lobby setup, damage will be set to simulation, collisions will be set to always on, all assists (minus friction) are allowed, and there will a required number of pit stops depending on track and race length. The total number will be announced before each round. Also, while all assists are allowed, many of us use very few of them, mostly limited to driving line, manual without clutch, and the occasional ABS. Just something to keep in mind. In addition, I kind of discourage the use of any assists given the nature of the cars in the series, but if you want/need them, feel free to use them.

Also, instead of using parties or gamechat, we are going to be using an app called Discord to communicate during the races. It is available for free on any desktop or mobile OS. Please join the Discord server even if you don’t have a mic, that way you can still hear everyone else. Or just join if for the dank shitposting. If for some reason we are not using the app or it fails, we will be using gamechat to communicate, and hoping for the best.





Here is the current schedule for the races. There will be one race per month. The specific time and date of each race will be determined by polls about 2 weeks before the earliest optional time, when possible. In addition, if a track has a night/weather option, there will also be a poll to determine which version of the track to race. In addition, to allow as much input from you all as possible, two races will be up to a vote of every track that was not already raced on that were around at the same time as these cars.


January 6th, 8:00 PM EST: Daytona Full, Day; 2.4 Hours COMPLETED


February 17th, 8:00 PM EST: Watkins Glen Full Alt; 1.5 Hours COMPLETED


March 24th, 4:30 PM EST: Sebring Full; 2 Hours COMPLETED


April 28th, 8:00 PM EST: Maple Valley Full Reverse; 1.5 Hours COMPLETED


May 19th, 8:00 PM EDT : Spa; 1.5 Hours COMPLETED


June 17th, 6:00 PM EDT: Le Mans Old Mulsanne; 2.4 Hours COMPLETED


July 29th, 6:00 PM EDT: Nurburgring Nordschleife; 1.5 Hours COMPLETED


August 25th, 6:00 PM EDT: Suzuka Full; 1.5 Hours COMPLETED


September 29th, 8:00 PM EDT: Monza Full Circuit Alt; 1.5 Hours COMPLETED


November 4th, 4:30 PM EST: Road Atlanta Full; 2 Hours COMPLETED


December 1st, 6:00 PM EST: Mugello Full; 1.5 Hours COMPLETED


December 22nd, 4:30 PM EST: Road America Full; 2 Hours COMPLETED



We will be racing vintage GT, touring and prototype cars for this race broken into 2 classes: Sports-Proto and GT. There will be a set build for each car that you must match. 


Since we are running two different classes, I want to make my own notes about driving etiquette. GT cars have the absolute right to hold and use the racing line when a Sports-Proto is approaching/passing, if they decide to do so. However, it is VERY HIGHLY ENCOURAGED that prototype and GT drivers communicate during passes and that GT cars yield to prototypes whenever possible. That being said, if you are racing a Prototype, it is highly encouraged that you have a mic so you can warn GT drivers when you are going to pass. However, I recommend that you use a mic regardless of what car you are driving. If you are in a Prototype and stuck behind GT traffic, be patient and do not force your way through, and DO NOT DIVE BOMB GT CARS. The only thing that will happen if you try and weave through several side by side cars is a crash. Just in general, do not try a high risk maneuver. Be patient and let passing opportunities create themselves. TL/DR: Don’t be a dick.

Also, be careful when exiting pit road as to avoid oncoming traffic, fast or slow moving. USE THE BLEND LINES WHEN POSSIBLE. It is probably a good idea to call out when you are exiting the pits so the drivers passing by them know there will be slow traffic coming up in front of them. In addition, it is expected that all drivers will follow and obey track limits. Track limits will be defined as the area of the track enclosed on either side by grass, sand, varying types of tarmac, or any combination of the three. Of course, accident avoidance overrules track limits and you can go off-road in that situations. Cutting corners sharp is also fine so long as two tires remain on the track. However, driving off-road to completely skip a corner to gain a time/racing advantage will not be tolerated. Additionally, driving backwards on the track is not permitted at any point. Driving backwards will result in a very probable disqualification if there is a major incident.


Before the race, there will be a timed race session with damage set to cosmetic and collisions set to always off for you to set your fastest time and determine your spot on the gird. Qualifying is not required, however not participating in it will immediately move you to last place for the race start.

Here are the rules for cautions. Credit for the original rules goes to r/redditracing, as I’ve only made minor changes. For a caution to be called, a multiple car wreck must have occurred in which both cars either spin, flip, take significant damage, or lose serious time off track. One of the involved drivers and/or a witnessing driver must call the caution. When a caution is called, the race leader should slow to about 50 or 60 mph IMMEDIATELY to allow the field to catch up as quickly as possible. The race leader will also assume the role of pace car unless there is a pace car present in the race. If there are multiple pace cars, the one ahead of AND closest to the leader will go in front of the field. ABUSE OF THE CAUTION CALL WILL RESULT IN SEVERE PENALTY. The caution will last one to two laps. The field should form quickly and efficiently to reduce length of yellow. There is no passing under caution with one exception. Any and all cars that are not on the lead lap may make ONE lap up under yellow (if you are multiple laps down, you can only make up one lap per caution). However, they may not pit to repair damage if they take the free pass. There is also no guarantee that a free pass car(s) will catch the tail end of the field before green. The pits will open remain open for the full duration of the caution. Restarts will be single file at the start finish line unless otherwise specified. At the restart, the pace car will enter the pits, and then return to its on-track resting point on exit. Once there are less than 5 minutes left in the race, no cautions can be called.


For race timing, we will be using a lap counter. So, we’ll keep completing laps until the timer hits the total race time, and once that time is reached everyone will finish their current lap and park in finishing order in Turn 1. The race winner will then complete the remaining laps so we can get credits.


Listed below are the cars that are eligible for both classes as well as their respective build rules. If it is not listed, it is not eligible for the race. However, if you think I forgot a car or want to plead a car’s case, leave a comment on this post on why you think that car should be included. Once you look at the car list, you’ll see there is a lot of variety. In fact, pretty much any car that was vaguely a prototype or GT car from any racing series at that time is eligible. Hell I’ve balanced a BMW 2002 with a Ferrari 250 LM. So don’t be afraid to request for the inclusion of a car. There are a few I know I haven’t tested that I’d probably allow if BoP works out.


To make the field more diverse and for better pictures, custom made or storefront paint jobs, and unique numbers for each driver are highly encouraged. While all cars should have a race number, it may be too difficult to organize everyone having their own number, but try and give your car a unique paint job to help it stand out. Also, if you paint your car as something that it is not, like painting the Lola T70 as a Matra, and want it recognized as such, please let me know or make it obvious in the design so I can name it as such in the post races. Otherwise, it will be denoted as whatever it is in the game.

Some Other Important Notes

  • I have tested and will be testing all of the cars extensively to make sure they are as even as possible. In addition, I will keep testing them up until race day to make sure there weren’t any inconsistencies in my original testing.
  • The build rules for any and every car are not 100% set in stone and may be changed at any point for re-balancing of the field. Do not expect changes the week of the race unless there is a major issue or a car has been added to the series.
  • You can change cars as much as you want, however once you switch cars you cannot swap again for 2 rounds. So, if you swap cars for the 4th round, you couldn’t drive a different car until the 6th round. This also applies to swapping between the Sports-Proto and GT classes.
  • Custom rims are allowed on all cars so long as some rules are followed. For all cars, heavyweight/chrome rims (Dub, Lowenhart, etc.) are banned. Due to the build rules, the rims cannot change the PI of the car. For example, if the PI is R830, the PI must stay that way after the rims are added.
  • Special thanks to everyone who has helped test cars for this series.

UPDATE 1/1/18: BoP finalized for Daytona.

UPDATE 2/12/18: BoP finalized for Watkins Glen.

UPDATE 3/19/18: BoP finalized for Sebring.

UPDATE 4/23/18: BoP finalized for Maple Valley.

UPDATE 5/17/18: BoP finalized for Spa.

UPDATE 6/12/18: BoP finalized for Le Mans.

UPDATE 7/22/18: BoP finalized for Nurburgring.

UPDATE 8/23/18: BoP finalized for Suzuka.

UPDATE 9/25/18: BoP finalized for Monza.

UPDATE 11/1/18: BoP finalized for Road Atlanta.

UPDATE 11/29/18: BoP finalized for Mugello.

UPDATE 12/20/18: BoP finalized for Road America.




Special thanks to Darkzer24 and KCHRPM for setting up this points sheet.

For this series, there will be three different points championships: a sprint championship (all 1.5 hour races), an endurance championship (all 2+ hour races), and an overall championship. There will also be a separate manufactures championship for each as well. That means come December there will be TWELVE shitty MS Paint trophies awarded! In addition, the overall championship will have one drop round. So if you can’t make a round don’t worry. For the constructors championship, if there are multiple cars from the same constructor, the one with the highest finishing position is the one that will score points for the championship.



If you are participating in this series, please click the link below to complete a very brief survey so I can keep track of who signs up and their gamertags (the only information required is your gamertag and Oppo and/or Reddit username). Also, if you sign up and for whatever reason are not sent a friend request by me, feel free to send me one as well as a message indicating that you intend to join the series. My gamertag is Corey CC97. In addition, you can get in contact with SVTyler (GT: mackleroy45) or anyone on the Discord if you do not hear from me, and they will get you set up. If you do not complete the survey or get in contact with me or the other people racing somehow, there is a very good chance you will not be sent an invite to the race on raceday.




I will be posting reminders for the series and races frequently with links to this post. If you have questions, please leave a comment on this post or one of the reminder posts.

Share This Story

Get our newsletter