[Bryan_G87]

Hello all, I have been fortunate enough to get my dealers HEA car and have gone to a few autocross events already. I figured I would post updates on how the car does with different mods and maybe learn a few things from the more experienced crowd out there. I have never been a forum user so I am excited to meet some other enthusiasts!

[Sherlock997]

Congrats on the M2 and welcome! Awesome to see these being autocrossed as I'm planning to do the same when I get mine. Wanting to do the MPHAS kit, square set of 305 tires, and camber plates.

How does it handle smaller autocross type courses? I think I have seen a few of your vids in the Facebook groups.

[fcman]

How did the car do? I’m coming out of a c7 which was an absolute monster, even on 300tw mpss. Not expecting the same level of performance from the bmw but hoping it can hold its own pretty well in factory spec

[Lappy]

Curious to what is done to the car as that does not look BS legal

[Bryan_G87]

The car was bone stock for the first two events. We have a smaller group, but I was 7 tenths off top overall raw for the first event and 1.6 second off top raw on the second. The second event was a much tighter course where a built miata on slicks is much harder to keep up with.. I will say on the slower layout the car did start pushing but it was manageable. I’m still newish to autocross so I know there is a lot more for me to learn as a driver.

I still get confused with the different rules for the classes and so on the third event I had just installed the AST HAS kit so I should have been in STU I believe. I want to build the car class specific, I was thinking of just adding camber plates and a 19x10.5 295 squared set up, which I believe is allowed in STU(correct me if I’m wrong). With that being said, the little bit of camber added from lowering the car nearly eliminated the under steering. I have been driving with the M traction control set to 4 and that allows really good rotation in my opinion.

[Bryan_G87]

Originally Posted by Sherlock997

Congrats on the M2 and welcome! Awesome to see these being autocrossed as I'm planning to do the same when I get mine. Wanting to do the MPHAS kit, square set of 305 tires, and camber plates.

How does it handle smaller autocross type courses? I think I have seen a few of your vids in the Facebook groups.

Thanks! The second event I went too was a very tight technical course and I did suffer from a bit of pushing but it was manageable, i installed the AST HAS kit before the third event and even just lowering the car got rid of most the pushing! I want to do camber plates and a square set up and see if that completely eliminates it. The traction control on this car is amazing and really let’s you push the limits of the car coming out of turns.

[Lappy]

Originally Posted by Bryan_G87

The car was bone stock for the first two events. We have a smaller group, but I was 7 tenths off top overall raw for the first event and 1.6 second off top raw on the second. The second event was a much tighter course where a built miata on slicks is much harder to keep up with.. I will say on the slower layout the car did start pushing but it was manageable. I’m still newish to autocross so I know there is a lot more for me to learn as a driver.

I still get confused with the different rules for the classes and so on the third event I had just installed the AST HAS kit so I should have been in STU I believe. I want to build the car class specific, I was thinking of just adding camber plates and a 19x10.5 295 squared set up, which I believe is allowed in STU(correct me if I’m wrong). With that being said, the little bit of camber added from lowering the car nearly eliminated the under steering. I have been driving with the M traction control set to 4 and that allows really good rotation in my opinion.

Not sure how involved you plan to be in scca autox, however the car is not classed anywhere currently (B-street for a stock car is likely to be released in this month's fast track due in a week or so). With your mods the car is not classed in STU and would likely fall under a catch all making it useless from a competitive stand point. Just a heads up in the event you decided to get serious. If you are out to just have fun, feel free to do whatever but don't expect to actually compete.

[Bryan_G87]

Originally Posted by Lappy

Not sure how involved you plan to be in scca autox, however the car is not classed anywhere currently (B-street for a stock car is likely to be released in this month's fast track due in a week or so). With your mods the car is not classed in STU and would likely fall under a catch all making it useless from a competitive stand point. Just a heads up in the event you decided to get serious. If you are out to just have fun, feel free to do whatever but don't expect to actually compete.

Thanks for the input, are you referring to the HAS Kit to be mod that knocks me out of any classes? If it is too much for STU, then would it fall into BSP? (if they end up classing the car as bs)

[Lappy]

Originally Posted by Bryan_G87

Thanks for the input, are you referring to the HAS Kit to be mod that knocks me out of any classes? If it is too much for STU, then would it fall into BSP? (if they end up classing the car as bs)

SSP is the catch all class for sport cars over 2.0L, however that is not legal for national competition. Like I said, if you care about national competition, I would hold of on the modifications. If you don't care, have fun.

[M2siast]

First congrats and welcome!
Was the car bone stock in the pictures?
It looks slammed… what kind of suspension?

[Bryan_G87]

Originally Posted by M2siast

First congrats and welcome!
Was the car bone stock in the pictures?
It looks slammed… what kind of suspension?

Thanks! The pictures were from this last event last weekend, the car has AST HAS kit installed.

[M2siast]

Originally Posted by Bryan_G87

Thanks! The pictures were from this last event last weekend, the car has AST HAS kit installed.

Cool ok thanks.
Hope you didn’t run as BS then lol that’d be cheating

[Bryan_G87]

Originally Posted by M2siast

Cool ok thanks.
Hope you didn’t run as BS then lol that’d be cheating

Unfortunately I cheated this last event, but so did my only competitor which was my dad who was was codriving my car lol.. I have been doing some research and trying to figure out where I should be, but I am finding conflicting information

[M2siast]

Originally Posted by Bryan_G87

Unfortunately I cheated this last event, but so did my only competitor which was my dad who was was codriving my car lol.. I have been doing some research and trying to figure out where I should be, but I am finding conflicting information

I understand the confusion about which “street” class a new car would be (A-Street, F-Street), but a car with modified suspension is never in street, it’s always STX or modified.

Don’t the organizers assist with classing the car where you go? They usually have a geek who will know most things off hand

[Bryan_G87]

Originally Posted by M2siast

I understand the confusion about which “street” class a new car would be (A-Street, F-Street), but a car with modified suspension is never in street, it’s always STX or modified.

Don’t the organizers assist with classing the car where you go? They usually have a geek who will know most things off hand

They were not aware I made any changes since last event and our group is rather small. (20-30 entrants) We talked after the event and they were unsure where I was supposed to be. Going forward I am going to build the car to comply with SST, but run in SSP until they determine the class for this car. I want to build the car with limitations because otherwise it becomes a money pit. I don't intend to compete in nationals or anything like that, I just like the idea of trying to optimize a car within a class instead of just buying any and all parts available.

[Bryan_G87]

Here is a link to the Go-Pro footage for my best run on this last event. Critiques welcomed!

[Hendo741]

If you're running 200 TW or higher, XA has a much better PAX than SSP. XA is pretty much a street car catch all for "street tires." As it stands right now, the G87 isn't eligible for SST. That will likely change at a later date, but SST and XA PAX arent far off.

[Sherlock997]

Here's a pretty handy tool to figure out SCCA classing, select your car and it will highlight what classing the vehicle is eligible for and provide a high-level overview of classing rules. Of course, the G87 isn't in it yet.

https://www.scca-classifier.com/a/index.html

[Lappy]

Originally Posted by Bryan_G87

Here is a link to the Go-Pro footage for my best run on this last event. Critiques welcomed!

Try to slap the gopro on the side of the car so you can see your driver inputs and through the windshield, also turn off the camera stability settings as it masks what the car is actually doing.

Here's an example from one of my events.

[Sherlock997]

Originally Posted by Lappy

Try to slap the gopro on the side of the car so you can see your driver inputs and through the windshield, also turn off the camera stability settings as it masks what the car is actually doing.

Here's an example from one of my events.

The helmet view also works, although can be a little shaky at times. Also what's your setup on the F87? That turn-in looks incredible.

[Lappy]

Originally Posted by Sherlock997

The helmet view also works, although can be a little shaky at times. Also what's your setup on the F87? That turn-in looks incredible.

Thanks, the car is very balanced and behaves well. Unfortunately it took me like two years to figure out the setup and now its going away in a month or so for the g87.

Car is setup for Scca B-Street
BMW Camber Corrections Hubs
MCS 2wnr shocks
Dinan FSB and Endlinks
Forgeone 19x9/19x10 wheels with 255/275 Re71rs tires, 5mm spacer on the front.

[baron95]

Originally Posted by M2siast

I understand the confusion about which “street” class a new car would be (A-Street, F-Street), but a car with modified suspension is never in street, it’s always STX or modified.

Would the MP Sports Suspension (Z58) ordered as a manufacturer installed accessory which comes listed in the sticker as a factory option, be considered a modified suspension for the purposes of classing?