[AWC-F87]

Hey guys! As the title states, I want to know what you're running for square wheels on track.

I am killing sets of front tires way to fast and need to able to move them to the back and squeeze more life out of them.

I don't want a "barely" fits square setup. I want something that clears pretty well all around. Spacers are fine.

I'm thinking 18x9.5 et33 with a 275 tire. I know that 275 on 9.5 is max. But I'm not going any narrower of a tire. My car makes good power and will roast 275s as it is.

What are your thoughts and experiences?

[5.M0NSTER]

How much negative camber are you running up front? Curious since I run the factory staggered setup and don’t consume front tires too quick.

But my tracks are easy on tires.

[Ggeezer]

18x10 et33 square with a 10mm spacer up front running 275/35 tires all around.

You'll need at least 2.5 degrees of camber to safely clear the fender.

[dvas]

Originally Posted by AWC-F87

Hey guys! As the title states, I want to know what you're running for square wheels on track.

I am killing sets of front tires way to fast and need to able to move them to the back and squeeze more life out of them.

I don't want a "barely" fits square setup. I want something that clears pretty well all around. Spacers are fine.

I'm thinking 18x9.5 et33 with a 275 tire. I know that 275 on 9.5 is max. But I'm not going any narrower of a tire. My car makes good power and will roast 275s as it is.

What are your thoughts and experiences?

When you say killing the front tires, what tires are you running and how many days are you getting out of them.

Depending on your pace and tire, it's certainly possible to have really bad wear with the M2. I was killing Sport Cup 2s after 2 days when running them on stock 19" wheels and with stock suspension. Adding camber plates and coilovers, the wear got bumped to about every 4 days. It wasn't until I got track dedicated tires/wheels that I saw wear rates that were acceptable to me.

Now running Apex SM-10 18x10 33ET square with Nitto NT01 275/35/18 square and getting at least 10 days if I don't abuse them. 12mm spacer and -3.2 of camber.

[AWC-F87]

I'm currently on kw v3s with camber plates
-3 front camber -2 rear
Tiny bit of toe
SPL toe arm, thrust arm, upper rear arms
HR 35mm front bar

I'm on 18" wheels with 265/275 re71rs

I can get barely 8 20 min sessions out of my front tires. The rears I can get 16 20 min sessions.
But some of our track days are 8 20min sessions in one day.

I'm also thinking of going to NT01 per the recommendation of my coach that it'll last longer.

I'm also working to get a new set of coils. I know the v3 are too soft for how hard I drive.

So I'm still looking for the magic answer on what square setup will work good, fit a 275 tire and not open a can of rubbing worms.

[Ggeezer]

Originally Posted by AWC-F87

I'm currently on kw v3s with camber plates
-3 front camber -2 rear
Tiny bit of toe
SPL toe arm, thrust arm, upper rear arms
HR 35mm front bar

I'm on 18" wheels with 265/275 re71rs

I can get barely 8 20 min sessions out of my front tires. The rears I can get 16 20 min sessions.
But some of our track days are 8 20min sessions in one day.

I'm also thinking of going to NT01 per the recommendation of my coach that it'll last longer.

I'm also working to get a new set of coils. I know the v3 are too soft for how hard I drive.

So I'm still looking for the magic answer on what square setup will work good, fit a 275 tire and not open a can of rubbing worms.

I think your tires might be the problem. RE71R are extremely grippy but wear out extremely fast when overdriven/overheated.

I got maybe 20-25 20min sessions out of mine with ambient temps in low 20s Celsius. After that I switched to Hankook RS4 and have about 9-10 days on them and reckon I can get maybe 4-5 more after I flip them.

NT01 are also a great choice but may wear a bit quicker than the Hankooks.

[AWC-F87]

Originally Posted by Ggeezer

I think your tires might be the problem. RE71R are extremely grippy but wear out extremely fast when overdriven/overheated.

I got maybe 20-25 20min sessions out of mine with ambient temps in low 20s Celsius. After that I switched to Hankook RS4 and have about 9-10 days on them and reckon I can get maybe 4-5 more after I flip them.

NT01 are also a great choice but may wear a bit quicker than the Hankooks.

The other problem I have is the front tires don't wear evenly across. The outsides on the front tires wear faster than anywhere else. And that's on 2 different tracks now. So I really feel like the v3s are just too soft. Even with the big front sway bar on max stiffness slightly preloaded, it still clearly has enough roll to wear out the shoulders.

I'm still very interested to hear about some square set ups.

Good to know on the Hancock's. I'm going to give the Nt01s a try first. The re71rs definitely have insane grip the first couple laps after they're warm. My coach said it's more of a TT tire. Made to get warm and then lay down a few fast laps then cooled off. Running hard for 20 min sessions heats them up too much and they just melt. I saw tire temps at 150* Fahrenheit. Ambient was 80*

[243Racing]

Originally Posted by AWC-F87

Hey guys! As the title states, I want to know what you're running for square wheels on track.

I am killing sets of front tires way to fast and need to able to move them to the back and squeeze more life out of them.

I don't want a "barely" fits square setup. I want something that clears pretty well all around. Spacers are fine.

I'm thinking 18x9.5 et33 with a 275 tire. I know that 275 on 9.5 is max. But I'm not going any narrower of a tire. My car makes good power and will roast 275s as it is.

What are your thoughts and experiences?

"max" is a funny thing, lol. I have 295/30/18 tires on 18x10 wheels. They work great.

[243Racing]

Also wanted to mention:

When I test fitted my 18x10+33 wheels with Toyo R888R 275/35R18 tires on the front, the tires rubbed on the front fender liner.

I'm getting ready to switch to square 275's and the first thing I'm going to do is pull that fender liner and see what I can do to increase inner clearance.

[dvas]

Originally Posted by AWC-F87

I'm currently on kw v3s with camber plates
-3 front camber -2 rear
Tiny bit of toe
SPL toe arm, thrust arm, upper rear arms
HR 35mm front bar

I'm on 18" wheels with 265/275 re71rs

I can get barely 8 20 min sessions out of my front tires. The rears I can get 16 20 min sessions.
But some of our track days are 8 20min sessions in one day.

I'm also thinking of going to NT01 per the recommendation of my coach that it'll last longer.

I'm also working to get a new set of coils. I know the v3 are too soft for how hard I drive.

So I'm still looking for the magic answer on what square setup will work good, fit a 275 tire and not open a can of rubbing worms.

If you're running RE71s (which I didn't see you mention) then I think you should expect to get about 16 to 20 twenty minute sessions if you rotate with a square setup across the four corners. That's at least what I experienced, running at a hard pace amongst the fastest instructors.

Perhaps your car setup can be tweaked before you spend money upgrading your coilovers. For example, why are you running toe in on the fronts, I wonder if this is part of your issues? Generally the way to go with a BMW is zero toe to a tiny bit of toe out. Also, consider adding more negative camber if you're running often on track. I run at least -3.2 with good wear. I once asked Will Turner how he sets up his race cars and he said he runs at least -4 in the front.

[AWC-F87]

Originally Posted by dvas

If you're running RE71s (which I didn't see you mention) then I think you should expect to get about 16 to 20 twenty minute sessions if you rotate with a square setup across the four corners. That's at least what I experienced, running at a hard pace amongst the fastest instructors.

Perhaps your car setup can be tweaked before you spend money upgrading your coilovers. For example, why are you running toe in on the fronts, I wonder if this is part of your issues? Generally the way to go with a BMW is zero toe to a tiny bit of toe out. Also, consider adding more negative camber if you're running often on track. I run at least -3.2 with good wear. I once asked Will Turner how he sets up his race cars and he said he runs at least -4 in the front.

I've ran -3.5 camber before. Didn't make any difference on track. The v3 spring rates are too soft. Period.

The current alignment specs I posted earlier are by far the best I've ran yet.
The back has .2 toe and the front is .04. The car was coming out for corners like a rocket. It also had much better straight line braking characteristics. I experienced the best handling yet with my current alignment.

One thing all of you need to remember is that car setup is very personal. What one person likes another person may not like.

I'm simply asking for some guidance on a square tire setup that doesn't run like a SOB.

Thanks

[243Racing]

Originally Posted by AWC-F87

I've ran -3.5 camber before. Didn't make any difference on track. The v3 spring rates are too soft. Period.

The current alignment specs I posted earlier are by far the best I've ran yet.
The back has .2 toe and the front is .04. The car was coming out for corners like a rocket. It also had much better straight line braking characteristics. I experienced the best handling yet with my current alignment.

One thing all of you need to remember is that car setup is very personal. What one person likes another person may not like.

I'm simply asking for some guidance on a square tire setup that doesn't run like a SOB.

Thanks

I'm only seeing a 30mm HR Front bar, IIRC the stiffest bar I could find was the 32mm AFE bar - is that a typo or could you share where you found the 35mm bar.

Also, what tracks are you running and what kind of lap times?

[AWC-F87]

Originally Posted by BeastieBombRacing

I'm only seeing a 30mm HR Front bar, IIRC the stiffest bar I could find was the 32mm AFE bar - is that a typo or could you share where you found the 35mm bar.

Also, what tracks are you running and what kind of lap times?

Typo lol. It's the HR bar.

I've run willow springs PB- 1:35
Streets of willow PB- 1:25
Buttonwillow CW13 PB- 2:02

I've been running intermediate run groups. But after this last weekend my coach said it's time for advanced.

I'm an ex local amateur professional motocross racer. So im very comfortable closer to the limit than most.

[AWC-F87]

So does anyone have any helpful information about what square wheel offset will fit?

[Shadowfax028]

Originally Posted by AWC-F87

So does anyone have any helpful information about what square wheel offset will fit?

I'm running 18 x 10 with a et33. 275/30/18
square. I do have a 12mm spacer up front. It looks good, no rubbing at all. I am getting -3.5 negative camber on the front.

So far I'm liking it alot

[243Racing]

Originally Posted by Shadowfax028

I'm running 18 x 10 with a et33. 275/30/18
square. I do have a 12mm spacer up front. It looks good, no rubbing at all. I am getting -3.5 negative camber on the front.

So far I'm liking it alot

275/30? Those are really short tires. Any issues with DSC?

[Shadowfax028]

Originally Posted by BeastieBombRacing

275/30? Those are really short tires. Any issues with DSC?

My bad. 275/35/18

[243Racing]

Originally Posted by Shadowfax028

My bad. 275/35/18

Haha, np. I have been thinking about trying a 285/30 square for the track but concerned that the diameter is almost 2" shorter than the ORM rears

[AWC-F87]

Originally Posted by Shadowfax028

I'm running 18 x 10 with a et33. 275/30/18
square. I do have a 12mm spacer up front. It looks good, no rubbing at all. I am getting -3.5 negative camber on the front.

So far I'm liking it alot

Thank you!! No issues in the rear? What camber is the rear at? Is your car on coils?

[evilspiritM3]

Originally Posted by Shadowfax028

I'm running 18 x 10 with a et33. 275/30/18
square. I do have a 12mm spacer up front. It looks good, no rubbing at all. I am getting -3.5 negative camber on the front.

So far I'm liking it alot

I'm running the same, but with a 10mm spacer and about -2.5 degrees of camber up front. Nothing special in the rear. Fits perfectly.

[Shadowfax028]

Originally Posted by AWC-F87

Thank you!! No issues in the rear? What camber is the rear at? Is your car on coils?

-1.8 n the rear, I'm running Ohlins. No rubbing what so ever.

[AWC-F87]

Originally Posted by Shadowfax028

-1.8 n the rear, I'm running Ohlins. No rubbing what so ever.

Awesome. Thank you. I currently have a set of staggered BBS ria. Rear wheel is 18x10.5 et37. So I just want to make dam sure before I buy a set of ev-7s in 18x10et33 that I can make them clear all 4 corners.
I'm currently running -3 front -2 rear camber. I have v3s right now but have clubsport 3 ways being made.
So that will open a little more spring clearance up front.

I'm hoping that the 18x10 being a 1/2 inch narrower will fit perfectly in et33.

I don't want my 1/4 panels or fenders getting rubbed up. I don't care about the liners.

Thanks for the help guys. This was the simple feedback I was looking for.