18" Square Setup - Rotatable

[SYT_Shadow]

Originally Posted by drroc

I guess the other popular option is to get TA5R 18x10.5 with ET36. I wonder how would the NT01 275 feel on the rear. Unfortunately, Nitto doesn't have a size between 275 and 305. I could go with Conti ECF 295 front and rear, but I wasn't that impressed with the grip under power, which is not surprising since its a 200TW tire.

Edit: It looks like Apex EC7 18x10.5 ET40 is pretty close to the BW TA5R wheel.

275s feel great on 10.5 wheels.

The difference between the et36 vs et40 is running a 15mm spacer up front vs 20

[drroc]

Originally Posted by SYT_Shadow

275s feel great on 10.5 wheels.

The difference between the et36 vs et40 is running a 15mm spacer up front vs 20

So you don't feel that the rear gets overworked in the 275 rear size? Running 275 vs 305 is certainly cost effective

[SYT_Shadow]

Originally Posted by drroc

So you don't feel that the rear gets overworked in the 275 rear size? Running 275 vs 305 is certainly cost effective

I prefer running 295 square, but have run 275 many times. Throttle modulation on corner exit is always important, and the lesson learned with 275s will be useful with 295s as well.

And in the 275 square situation, it is still the fronts who are getting overworked!

[drroc]

Originally Posted by SYT_Shadow

I prefer running 295 square, but have run 275 many times. Throttle modulation on corner exit is always important, and the lesson learned with 275s will be useful with 295s as well.

And in the 275 square situation, it is still the fronts who are getting overworked!

What 295s do you run?

[M3SQRD]

Originally Posted by drroc

I guess the other popular option is to get TA5R 18x10.5 with ET36. I wonder how would the NT01 275 feel on the rear. Unfortunately, Nitto doesn't have a size between 275 and 305. I could go with Conti ECF 295 front and rear, but I wasn't that impressed with the grip under power, which is not surprising since its a 200TW tire.

Edit: It looks like Apex EC7 18x10.5 ET40 is pretty close to the BW TA5R wheel.

I have sets of the TA5R in square (track) and staggered (street) setups. The TA5R is a solid wheel based on its weight and strength vs. cost. Apex wheels are another option. The BW offset is better because you can run standard wheel studs that can accommodate a 15 mm spacer. Last I looked, there weren’t any off-the-shelf studs that worked with 20 mm spacers. What suspension are you running?

There are a decent number of 285 or 295 tire options available in the TW 200 category so you’re not limited to the NT01. I’m not a huge fan of recommending tires because people drive differently, their cars are setup differently, and they are looking for different things from tires (or weigh things differently).

[RugbyBro]

Originally Posted by M3SQRD

I have sets of the TA5R in square (track) and staggered (street) setups. The TA5R is a solid wheel based on its weight and strength vs. cost. Apex wheels are another option. The BW offset is better because you can run standard wheel studs that can accommodate a 15 mm spacer. Last I looked, there weren’t any off-the-shelf studs that worked with 20 mm spacers. What suspension are you running?

There are a decent number of 285 or 295 tire options available in the TW 200 category so you’re not limited to the NT01. I’m not a huge fan of recommending tires because people drive differently, their cars are setup differently, and they are looking for different things from tires (or weigh things differently).

+1 for TA5R. Rock solid wheels at a great price w/ better chassis specific offsets than other manufacturers.

I run the BW 92mm race studs with up to a 25mm Motorsport Hardware spacer, so that's an option. BW also sells 121mm studs that can accommodate even larger spacers

[drroc]

Originally Posted by M3SQRD

I have sets of the TA5R in square (track) and staggered (street) setups. The TA5R is a solid wheel based on its weight and strength vs. cost. Apex wheels are another option. The BW offset is better because you can run standard wheel studs that can accommodate a 15 mm spacer. Last I looked, there weren’t any off-the-shelf studs that worked with 20 mm spacers. What suspension are you running?

There are a decent number of 285 or 295 tire options available in the TW 200 category so you’re not limited to the NT01. I’m not a huge fan of recommending tires because people drive differently, their cars are setup differently, and they are looking for different things from tires (or weigh things differently).

I have MCS 2WNR shocks front and rear with Ground Control camber plates up front with -3.2 degrees of camber. The shocks are paired with Eibach 600lbs springs. I am also running BW M14 73mm Premium Race studs.

I have run ECF TW200 tire in the past, and I was a bit disappointed in its rear grip capabilities.

[M3SQRD]

Originally Posted by RugbyBro

+1 for TA5R. Rock solid wheels at a great price w/ better chassis specific offsets than other manufacturers.

I run the BW 92mm race studs with up to a 25mm Motorsport Hardware spacer, so that's an option. BW also sells 32mm studs that can accommodate even larger spacers

I haven’t looked for studs for a couple of years. I knew they used them. Nice to hear they’re offering longer studs as a standard part now that work with 25+ mm spacers.

I’m trying to picture 92 mm studs sticking out of a wheel with no spacer. It must have a James-Bond-esque look to it

[RugbyBro]

Originally Posted by M3SQRD

I haven’t looked for studs for a couple of years. I knew they used them. Nice to hear they’re offering longer studs as a standard part now that work with 25+ mm spacers.

I’m trying to picture 92 mm studs sticking out of a wheel with no spacer. It must have a James-Bond-esque look to it

yeah long lugs to cover the exposed threads are a must. I run 92 in the front and 73 in the rear with spacers regardless of track wheels or daily so they usually aren't too exposed. With no spacer you might look like you're straight out of a mad max movie lol.

I also erroneously said 32mm studs, BW sells *121mm* studs that can accept their *32mm* spacer and also there 41mm spacer.

[M3SQRD]

Originally Posted by drroc

I have MCS 2WNR shocks front and rear with Ground Control camber plates up front with -3.2 degrees of camber. The shocks are paired with Eibach 600lbs springs. I am also running BW M14 73mm Premium Race studs.

I have run ECF TW200 tire in the past, and I was a bit disappointed in its rear grip capabilities.

You’re F/R 600/600 lbf/in (rear c/o setup)?

I’ve heard mixed reviews on the ECF. Great example why I’m not a fan of recommending tires. I don’t have a problem letting people know what I run as an FYI, not a recommendation. Back in 2004, I was a huge fan of the original MPSC in 265 square on my e46 M3 but most people thought it was trash. I had no problems getting them to last a 45 min session without getting greasy and I could keep up with the guys running Hoosiers. If I had listened to people’s recommendations, I would have stayed away but it ended up being one of my favorite track tires.

[M3SQRD]

Originally Posted by RugbyBro

yeah long lugs to cover the exposed threads are a must. I run 92 in the front and 73 in the rear with spacers regardless of track wheels or daily so they usually aren't too exposed. With no spacer you might look like you're straight out of a mad max movie lol.

I also erroneously said 32mm studs, BW sells *121mm* studs that can accept their *32mm* spacer and also there 41mm spacer.

I knew what you meant. Stud’s must be longer than the thickness of a spacer to work

[SYT_Shadow]

Originally Posted by drroc

What 295s do you run?

Mostly Hoosier in the past few years

[drroc]

Originally Posted by M3SQRD

You’re F/R 600/600 lbf/in (rear c/o setup)?

Yes.

Eibach 600/600 lbf/in

-3.0 deg front camber
-2.2 deg rear camber
1/16 total front toe out
3/16 total rear toe in
Shocks set to 3 compression 6 rebound. (MCS 2WNR)

[M3SQRD]

Originally Posted by drroc

Yes.

Eibach 600/600 lbf/in

-3.0 deg front camber
-2.2 deg rear camber
1/16 total front toe out
3/16 total rear toe in
Shocks set to 3 compression 6 rebound. (MCS 2WNR)

R and C settings from fully open or fully closed? I’m guessing fully open based on your spring rates but I could be wrong. I think you have 14 clicks (15 positions) of R and C. I’m one of the few around here that runs a staggered setup. I also will run a squared setup. However, I find a 285/305 works well for my driving style. The 305 definitely helps manage the rear better. Another reason why I don’t recommend tires

MCS is an excellent choice! I was one of their first customers when MCS was first founded after AST bought Moton. I’m currently running 2WRs on our f22, e92 M and f82.

[drroc]

Originally Posted by M3SQRD

R and C settings from fully open or fully closed? I’m guessing fully open based on your spring rates but I could be wrong. I think you have 14 clicks (15 positions) of R and C. I’m one of the few around here that runs a staggered setup. I also will run a squared setup. However, I find a 285/305 works well for my driving style. The 305 definitely helps manage the rear better. Another reason why I don’t recommend tires

MCS is an excellent choice! I was one of their first customers when MCS was first founded after AST bought Moton. I’m currently running 2WRs on our f22, e92 M and f82.

Shocks set to 3 compression 6 rebound. Counted from full soft. Compression is with
the knob up and rebound is with the knob down. Always keep the knob in the down
position.

Are you running the 305 tire on a 10.5 or 11 rim?

[markw10702]

Originally Posted by M3SQRD

R and C settings from fully open or fully closed?

MCS recommends starting from the "0" position for both R and C. Softest position = 0, Stiffest position = 18.

https://www.motioncontrolsuspension....INSTR-2020.pdf

I am running the 2WNR on my 330Ci (S54 powered) track car. Love 'em.

[M3SQRD]

Originally Posted by markw10702

MCS recommends starting from the "0" position for both R and C. Softest position = 0, Stiffest position = 18.

https://www.motioncontrolsuspension....INSTR-2020.pdf

I am running the 2WNR on my 330Ci (S54 powered) track car. Love 'em.

You can go either way as long as you’re consistent. If you’re running higher rates, it’s easier to count down than it is to count up. On setup sheets, a neg number means you’re counting down from fully closed.

[M3SQRD]

Originally Posted by drroc

Shocks set to 3 compression 6 rebound. Counted from full soft. Compression is with
the knob up and rebound is with the knob down. Always keep the knob in the down
position.

Are you running the 305 tire on a 10.5 or 11 rim?

I had a set of 2WNR for a short time before switching to 2WR.

I use an 11et44 wheel. It’s possible to fit a 315 but then the car doesn’t want to turn in well. Crazy rear traction but the front just pushes. 20 mm stagger max works well.

[drroc]

Originally Posted by M3SQRD

I had a set of 2WNR for a short time before switching to 2WR.

I use an 11et44 wheel. It’s possible to fit a 315 but then the car doesn’t want to turn in well. Crazy rear traction but the front just pushes. 20 mm stagger max works well.

I have 11et44 rear and a 9.5 et22 front. The front is too narrow for 275s. I looked at the Apex EC7 wheels, but I couldn't find a 10.5 in a color that matched my rears. Anyway, I am going to try BimmerWorld TA5R Flow Form Wheel, 18x10.5 ET36 with 275 NT01s and see how it goes. If I find issues with rear traction, I can try to use 305s on 10.5s. Hopefully, the 0.5 inch width reduction won't be a huge issue for the sidewall.

[SYT_Shadow]

Originally Posted by drroc

I have 11et44 rear and a 9.5 et22 front. The front is too narrow for 275s. I looked at the Apex EC7 wheels, but I couldn't find a 10.5 in a color that matched my rears. Anyway, I am going to try BimmerWorld TA5R Flow Form Wheel, 18x10.5 ET36 with 275 NT01s and see how it goes. If I find issues with rear traction, I can try to use 305s on 10.5s. Hopefully, the 0.5 inch width reduction won't be a huge issue for the sidewall.

This should work, let us know.

For sure 9.5 doesn't work well on track.

[M3SQRD]

Originally Posted by drroc

I have 11et44 rear and a 9.5 et22 front. The front is too narrow for 275s. I looked at the Apex EC7 wheels, but I couldn't find a 10.5 in a color that matched my rears. Anyway, I am going to try BimmerWorld TA5R Flow Form Wheel, 18x10.5 ET36 with 275 NT01s and see how it goes. If I find issues with rear traction, I can try to use 305s on 10.5s. Hopefully, the 0.5 inch width reduction won't be a huge issue for the sidewall.

I’ve had good luck with a regular sized 275 on a 9.5et23 with good tire support. I’ve always used the following tire-wheel width relationships: 275 on 9.5”, 285 on 10”, 295 on 10.5” and 305 on 11”. I’ve yet to run into any abnormal tire wear/performance issues.

[drroc]

Originally Posted by M3SQRD

I’ve had good luck with a regular sized 275 on a 9.5et23 with good tire support. I’ve always used the following tire-wheel width relationships: 275 on 9.5”, 285 on 10”, 295 on 10.5” and 305 on 11”. I’ve yet to run into any abnormal tire wear/performance issues.

Thunderhill has some weird cambered corners where the front feels sketchy. At times it grips and then other times it starts to wash out a bit. So my thought is that a slightly wider rim would help in those cases. Let's see how it pans out in practice though