Track forum general chit chat.

[slowdown_dan]

There's no secret sauce or something that won't be a compromise on the street OR the track when deciding between the safety and security of a stock seat/ belt vs a more track focused setup. While I understand safety is a system, there are a few very specific tweaks/compromises that can be made that aren't totally detrimental to the entire system functioning. Want to underline here, this is only the research I've found and I'm not anything close to an expert opinion.

I went the Nogaro route, with QFP. On the track that's coupled with HANS and helmet. On the street I rely on the QFP to give where it's supposed to give, and the front and pillar airbags to meet me in the middle. Did I lose the seat airbag? Yes. That is really the only thing I feel I gave up to tilt the car towards better on track performance of a lightweight, low slung fixed back seat. It's still power slide adjustable. I still have lumbar support, albeit manual squeeze pump, and it's still really easy to get in and out of (one of the most important features for me as I'm 6'4)

I also put a grand total of 1k street miles on my m3 this year so the phrase "ymmv" is not metaphorical in this instance.

[Grillpt]

Originally Posted by Grip Addict

Is that straight as long as it looks on track maps? lol

I saw some E92 M3 footage on the track even some slower drivers seem to peg the 140s

I ran the full course (grand course whatever they call it) and yes both the front and back straights are long AF. My Evo was only 300whp and I hit 140 on both.

Agreed with whoever said the esses take balls to go fast. I white knuckled it every lap. Got in around 120 and out around 108. Gotta hit your marks perfectly or u risk going off.

It's awesome and scary as balls at the same time.

[derbo]

Originally Posted by butte2butte

There's no secret sauce or something that won't be a compromise on the street OR the track when deciding between the safety and security of a stock seat/ belt vs a more track focused setup. While I understand safety is a system, there are a few very specific tweaks/compromises that can be made that aren't totally detrimental to the entire system functioning. Want to underline here, this is only the research I've found and I'm not anything close to an expert opinion.

I went the Nogaro route, with QFP. On the track that's coupled with HANS and helmet. On the street I rely on the QFP to give where it's supposed to give, and the front and pillar airbags to meet me in the middle. Did I lose the seat airbag? Yes. That is really the only thing I feel I gave up to tilt the car towards better on track performance of a lightweight, low slung fixed back seat. It's still power slide adjustable. I still have lumbar support, albeit manual squeeze pump, and it's still really easy to get in and out of (one of the most important features for me as I'm 6'4)

I also put a grand total of 1k street miles on my m3 this year so the phrase "ymmv" is not metaphorical in this instance.

Thanks for the insight! I think at the end of the day, I might end up with a Pole position ABE and just deal with the lost of side airbags.

My wife does drive my car and the height adjustment was nice for that which doesn't exist in any aftermarket setup right now.

[Kelse92]

Originally Posted by derbo

Thanks for the insight! I think at the end of the day, I might end up with a Pole position ABE and just deal with the lost of side airbags.

My wife does drive my car and the height adjustment was nice for that which doesn't exist in any aftermarket setup right now.

A lot of couples I know that are different heights and drive the same car do sliders on the seat and then a booster cushion. There’s a few decent ones out there.

[StripclubDJ]

.

[slcook54]

Are you running RIAs? StripclubDJ

[StripclubDJ]

Originally Posted by slcook54

Are you running RIAs? StripclubDJ

M4 Gt4 wheels

[slowdown_dan]

Originally Posted by StripclubDJ

M4 Gt4 wheels

What did you do to get the fronts to fit? 305/645's on the front? I've been waiting for just one person to do the work on this chassis and post up before I pulled the trigger myself.

[StripclubDJ]

Originally Posted by butte2butte

What did you do to get the fronts to fit? 305/645's on the front? I've been waiting for just one person to do the work on this chassis and post up before I pulled the trigger myself.

This.

I moved the whole front track in

[Adrian g.]

Originally Posted by StripclubDJ

This.

I moved the whole front track in

Nice.

What are your alignment specs if you don't mind sharing them.

[StripclubDJ]

Originally Posted by Adrian g.

Nice.

What are your alignment specs if you don't mind sharing them.

-3.7 / 0 toe , front
-2.0 / 2mm toe in each wheel, rear

[Exclusivs]

Nice! Looking good

[k_mann]

Okay I'm sure this has been answered somewhere but I've been digging and can't seem to get an answer.

For you guys running 18x10 square, do you use 75 or 90mm studs? I get the typical spacers with those wheels is 12 and 5, which 75 would accommodate. But wasn't sure if any you experienced both and had a preference?

[roastbeef]

Originally Posted by aututto

Okay I'm sure this has been answered somewhere but I've been digging and can't seem to get an answer.

For you guys running 18x10 square, do you use 75 or 90mm studs? I get the typical spacers with those wheels is 12 and 5, which 75 would accommodate. But wasn't sure if any you experienced both and had a preference?

No point in a stud being longer than it needs to be.

[derbo]

Originally Posted by roastbeef

No point in a stud being longer than it needs to be.

extra weight. amirite?

[dparm]

Longer studs will give more flexibility for running wheels with more offset (or spacers).

[k_mann]

Originally Posted by roastbeef

No point in a stud being longer than it needs to be.

I'm gonna use that one next time she tells me it's too small

[M43S7RO]

Slicer did the work a while back, read here:

https://www.m3post.com/forums/showthread.php?p=23978836

I have these and had custom longer MSI studs made and had them pressed by Core4. I run them up front with 15mm spacer in order to clear the oem strut on 285 tires. The offset of the wheels and the fact that they have a 20mm pad means that every dimension of your setup matters, i.e. strut diameter, tire width.

I initially tried the 90mm studs and had no free threads of engagement. I wasnt comfortable with this and so the custom studs.

From what I've gathered, many aftermarket coilovers have a smaller diameter shaft than oem struts and so may not need as much spacer, depending on the tire width you are looking to run.

Originally Posted by butte2butte

What did you do to get the fronts to fit? 305/645's on the front? I've been waiting for just one person to do the work on this chassis and post up before I pulled the trigger myself.

[StripclubDJ]

Originally Posted by dparm

Longer studs will give more flexibility for running wheels with more offset (or spacers).

This. And this.

Do it once , and forget about it

[redpriest]

Originally Posted by StripclubDJ

This. And this.

Do it once , and forget about it

Just make sure you have a long enough socket heh heh...

[rhyary]

Anyone tried 305/30/19 on the rear?
While the 295/30/19 has plenty of traction, the 305/30/19 has few more options.

[turbo_joe]

Originally Posted by rhyary

Anyone tried 305/30/19 on the rear?
While the 295/30/19 has plenty of traction, the 305/30/19 has few more options.

It can fit with the right spec wheels and some work