F8X M3/M4 Macht Schnell wheel spacer reference thread

[pigwet]

Quick video of 12mm Macht Schnell on F80 M3 with stock suspension. The car was not driven between shots.

[pigwet]

Year/model BMW
2015 M3

Wheels/offset
Front: (ie: 19 x 9.0 Style 437M, ET29)
Rear: (ie: 19 x 10.0 Style 437M, ET40)

Tire size
Front: Michelin Pilot Super Sport 255/35-19
Rear: Michelin Pilot Super Sport 275/35-19

Suspension
Adaptive M Suspension, Stock springs

Spacer size
Front: 12mm
Rear: 12mm

[tom @ eas]

Wow, fantastic pictures! Thanks for posting.

[M3Fanatics]

Hey Tom,

I was thinking about getting the KW sleeve kit for the M3 and was wondering if there will be any rubbing issue with a 15/15 spacer setup on the stock 19in rims and tires, I'm usually the only person in the car and the trunk is empty most of the time. Also do you think that there will be any problems with the KW and Adaptive suspension.

Thanks.

[tom @ eas]

Originally Posted by M3Fanatics

Hey Tom,

I was thinking about getting the KW sleeve kit for the M3 and was wondering if there will be any rubbing issue with a 15/15 spacer setup on the stock 19in rims and tires, I'm usually the only person in the car and the trunk is empty most of the time. Also do you think that there will be any problems with the KW and Adaptive suspension.

Thanks.

15/15 would work but would recommend 12/15 instead since the front wheels are slightly offset a bit more aggressive than the rear.

This way all four wheels are perfectly flush with the fenders.

[M3Fanatics]

Thanks a lot for your reply, so you recommend 12 on the front and 15 on the back.

[tom @ eas]

Originally Posted by M3Fanatics

Thanks a lot for your reply, so you recommend 12 on the front and 15 on the back.

Other way around, 15mm front and 12mm rear (assuming stock tire sizes are being retained).

[Revartr]

Planning on doing the KW HAS kit and dropping her all the way. Was either going to do 15/15 or 18/18. Running stock 437M wheel/tire setup. Wanting to be as flush as possible, with a little poke, similar to how my Z was setup (see attached). What do you recommend?

[kevin @ eas]

Originally Posted by Revartr

Planning on doing the KW HAS kit and dropping her all the way. Was either going to do 15/15 or 18/18. Running stock 437M wheel/tire setup. Wanting to be as flush as possible, with a little poke, similar to how my Z was setup (see attached). What do you recommend?

This car is 15 all around if you want an idea of what the fit looks like. The 18/15 though would be more what you are looking for with a little more poke in the front.

[Revartr]

Originally Posted by kevin @ eas

This car is 15 all around if you want an idea of what the fit looks like. The 18/15 though would be more what you are looking for with a little more poke in the front.

From the looks of it, I may actually want to do 20/20. Doesn't look like I'd have to worry about rubbing, would I?

[vip]

Are there any wheel lock and lugs that work with spacers for either 18" or 19" setups?

[kevin @ eas]

Originally Posted by Revartr

From the looks of it, I may actually want to do 20/20. Doesn't look like I'd have to worry about rubbing, would I?

I know the 20's had some rubbing. I would stick to 18's and lower for a rub free fitment.

Originally Posted by vip

Are there any wheel lock and lugs that work with spacers for either 18" or 19" setups?

The ones we have used the most are the RAD wheel locks. If you shoot me your spacer sizing I can show you the right size bolt.

[gogoevo]

I'm planning on a 15/12 spacer using the stock 19's and KW HAS lowered all the way down. This setup will be used for track/autoX exclusively. I'm also searching for another set of wheels - 10f &11r using 275/305 tire that will see some track time but not much. I'm guessing the second set of wheels / tires won't need spacers. My question is this: given the frequency of wheel changes, are there any adverse effects of removing and reapplying the spacers over time, other than human error?

[tom @ eas]

Originally Posted by Revartr

From the looks of it, I may actually want to do 20/20. Doesn't look like I'd have to worry about rubbing, would I?

You will experience some rubbing if lowered with a 20/20 setup with aggressive driving. Might want back to a 15/18 setup.

Originally Posted by gogoevo

I'm planning on a 15/12 spacer using the stock 19's and KW HAS lowered all the way down. This setup will be used for track/autoX exclusively. I'm also searching for another set of wheels - 10f &11r using 275/305 tire that will see some track time but not much. I'm guessing the second set of wheels / tires won't need spacers. My question is this: given the frequency of wheel changes, are there any adverse effects of removing and reapplying the spacers over time, other than human error?

None really, just make sure the mating surfaces (back of wheel & rotor) are clean of any surface rust before reinstalling.

And always torque lugs in start pattern to 105ft-lb. afterwards.

[tom @ eas]

Originally Posted by Revartr

Planning on doing the KW HAS kit and dropping her all the way. Was either going to do 15/15 or 18/18. Running stock 437M wheel/tire setup. Wanting to be as flush as possible, with a little poke, similar to how my Z was setup (see attached). What do you recommend?

15/18 should get you there. Did you plan on running springs or coilovers?

[ftedd]

Originally Posted by tom @ eas

Black Sapphire M3, fresh from the dealership.



















Year/model BMW
2015 M3

Wheels/offset
Front: (ie: 19 x 9.0 Style 437M, ET29)
Rear: (ie: 19 x 10.0 Style 437M, ET40)

Tire size
Front: Michelin Pilot Super Sport 255/35-19
Rear: Michelin Pilot Super Sport 275/35-19

Suspension
Stock springs

Spacer size
Front: 15mm
Rear: 12mm

This looks great! I'm going to do this 15/12 set up on my identical M3.
Need help with springs though...the 435 is different than the M3 sport springs? Which will lower the car equally and not create a situation where the front rakes down? Thanks.

[tom @ eas]

Originally Posted by ftedd

This looks great! I'm going to do this 15/12 set up on my identical M3.
Need help with springs though...the 435 is different than the M3 sport springs? Which will lower the car equally and not create a situation where the front rakes down? Thanks.

Here's some real world examples:

Stock


435 H&R Sport Springs


M3/M4 H&R Sport Springs

OEM Spring measurement


435 H&R Sport measurement


M3/M4 H&R Sport Spring Measurement


Front drop is identical. Approximately 1/4" different in rear height between 435 vs M3/M4.

[ftedd]

Originally Posted by tom @ eas

Here's some real world examples:

Stock


435 H&R Sport Springs


M3/M4 H&R Sport Springs

OEM Spring measurement


435 H&R Sport measurement


M3/M4 H&R Sport Spring Measurement


Front drop is identical. Approximately 1/4" different in rear height between 435 vs M3/M4.

Thank you. Will be doing 435 springs.

[dmk08]

Originally Posted by ftedd

Thank you. Will be doing 435 springs.

Because those spring rates are right for an m?

[ftedd]

Originally Posted by dmk08

Because those spring rates are right for an m?

haven't heard of issues...have you? can't do the bigger drop of the m springs.

[dmk08]

Originally Posted by ftedd

haven't heard of issues...have you? can't do the bigger drop of the m springs.

I would think the springs would be too soft and mess with the handling. I wouldnt think it would break the car.

[ftedd]

Originally Posted by dmk08

I would think the springs would be too soft and mess with the handling. I wouldnt think it would break the car.

Humm...good point. Need to research.