Anyone have rubbing issues with 305 R888's?

[zbrit00x]

Recently put some 265/35/19 and 305/30/19 R888's on the F80.
I have found it rubs some in the rear and up front.

The setup is:
KW HAS, vorsteiner vff101 , 5mm spacer up front to clear HAS collar.
Front 19x9.5 offset 22
Rear 19x10.5 offset 34

The fronts I should be able to resolve by switching suspension and getting rid of the spacer, however the rear I am unsure about.

Id love to hear more from those running 305 R888's in the rear on ride height, suspension, offset, etc.

[Justin.AutoTalent]

Originally Posted by zbrit00x

Recently put some 265/35/19 and 305/30/19 R888's on the F80.
I have found it rubs some in the rear and up front.

The setup is:
KW HAS, vorsteiner vff101 , 5mm spacer up front to clear HAS collar.
Front 19x9.5 offset 22
Rear 19x10.5 offset 34

The fronts I should be able to resolve by switching suspension and getting rid of the spacer, however the rear I am unsure about.

Id love to hear more from those running 305 R888's in the rear on ride height, suspension, offset, etc.

There's a bit of modification required to fit it: shaving fenders, raising the rear, more camber (-2.5 to -3.0 degrees)

Most people just run a 295/30/19 R888 to avoid the headache

[MaX PL]

Originally Posted by Justin | AutoTalent

There's a bit of modification required to fit it: shaving fenders, raising the rear, more camber (-2.5 to -3.0 degrees)

Most people just run a 295/30/19 R888 to avoid the headache

Are those modifications only necessary for his particular setup are for anyone wanting to run a 305 in the rear?

[Cuturass]

I run my MT 305's with no issues at all.

[Justin.AutoTalent]

Originally Posted by MaX PL

Are those modifications only necessary for his particular setup are for anyone wanting to run a 305 in the rear?

It won't let me tag him, but maybe the owner can chime in here.

We did a lot of work to get the 305 MPSS to fit which are square but not as wide/thick as the R888.

- 3 degrees of camber
- modifications to fender lining
- switched to coils, raised the rear

still rubbed lightly

[mcvaughan]

Originally Posted by zbrit00x

Recently put some 265/35/19 and 305/30/19 R888's on the F80.
I have found it rubs some in the rear and up front.

The setup is:
KW HAS, vorsteiner vff101 , 5mm spacer up front to clear HAS collar.
Front 19x9.5 offset 22
Rear 19x10.5 offset 34

The fronts I should be able to resolve by switching suspension and getting rid of the spacer, however the rear I am unsure about.

Id love to hear more from those running 305 R888's in the rear on ride height, suspension, offset, etc.

In the front you probably need a 10mm spacer, coupled with more camber. More camber in the rear would help as well.

[Kasé Zomé]

OP -

Since you have the HAS kit, can't you just raise the rear a bit or are you maxed out? As others have said, running more negative camber should help but I think it'll be tough with 19s. I'm running 305/35/18 R888s and no rubbing (yet) on Macht Schnell springs.

[MasterP]

Camber for rear should be fine for you. Your setup isn't what I'd call aggressive. I'd prefer to run an 11 for a 305 R888 since the extra half inch would stretch that tire more but if you can't camber should be enough.

265/35 on a 9.5 et22 shouldn't rub within the stock front camber range.

I run a 265/35 on a 9.5 et22 with no issues even with 10 or 15mm spacers.

[AW BMW]

Originally Posted by MaX PL

Are those modifications only necessary for his particular setup are for anyone wanting to run a 305 in the rear?

Originally Posted by Justin | AutoTalent

It won't let me tag him, but maybe the owner can chime in here.

We did a lot of work to get the 305 MPSS to fit which are square but not as wide/thick as the R888.

- 3 degrees of camber
- modifications to fender lining
- switched to coils, raised the rear

still rubbed lightly

Hey Justin, yeah Max pl that's my car. No matter what we tried it rubbed with the 305 mpss tires. I ended up switching to 295s in the rear on the vorstiener wheels. Here is a close up picture of when I had the 305s on.

[zbrit00x]

Will be switching to kw v3's since the HAS is limited on the front for this setup.
The rears dont rub too bad, I raised it up some more, however I do believe a bit more camber should resolve the rub.

As for the front, I am not sure if a wider spacer would be a good idea. Seems like it would cause the tire to poke out more. These 265/35 r888's are meaty.

[Shmelgy]

I just put on my FI-Rs with the same tires and a 12mm spacer up front (I have -2.5 camber) and the rears rub under compression or even backing out of my driveway at an angle. I'm on KW Clubsports and I'm fairly low. I'm going to try and see what I can do tomorrow and I'll get back to you

[mcvaughan]

Originally Posted by zbrit00x

Will be switching to kw v3's since the HAS is limited on the front for this setup.
The rears dont rub too bad, I raised it up some more, however I do believe a bit more camber should resolve the rub.

As for the front, I am not sure if a wider spacer would be a good idea. Seems like it would cause the tire to poke out more. These 265/35 r888's are meaty.

The springs are still fairly wide on the V3's.

If you're using a spacer up front the only way to counter it is more camber.

[Shmelgy]

Ok so I am no longer rubbing. Added more negative camber in the rear and a bit of toe in. Front camber is -2.9, rear is -2.3

[Justin.AutoTalent]

Originally Posted by Shmelgy

Ok so I am no longer rubbing. Added more negative camber in the rear and a bit of toe in. Front camber is -2.9, rear is -2.3

The guys sent me pics, car looks great dude!

[GoodtoGo]

Originally Posted by AW BMW

Hey Justin, yeah Max pl that's my car. No matter what we tried it rubbed with the 305 mpss tires. I ended up switching to 295s in the rear on the vorstiener wheels. Here is a close up picture of when I had the 305s on.

Do you also have a similar pic with the 295s?

[AW BMW]

Originally Posted by GoodtoGo

Do you also have a similar pic with the 295s?

This is the closest I have with the 295s on. No rubbing at all even with 5 people in the car.

[Signature Wheel BMW]

Toyo Proxes R888 – R Compound is very wide compared to MPSS. We recommend 19x11 ET44 rear for proper fitment.

On the front, we would recommend 275/30/19.

275/30/19 front / 305/30/19 rear. The logic is OEM F8x tire size rear is 2.5-2.7% taller in the rear. If you run 265/35/19 front, the rolling diameter in the front and rear will be the same. This creates a lot of ECU intervention as it thinks the rear wheels are slipping, so power is reduced to attempt the slipping sensation.

A forum member ordered our track setup to mount the R-Compound tire sizes above, we'll post photos soon.

Respectfully,
Jimmy, Signature Wheel - BMW Specialist

[zbrit00x]

Originally Posted by Signature Wheel BMW

Toyo Proxes R888 – R Compound is very wide compared to MPSS. We recommend 19x11 ET44 rear for proper fitment.

On the front, we would recommend 275/30/19.

275/30/19 front / 305/30/19 rear. The logic is OEM F8x tire size rear is 2.5-2.7% taller in the rear. If you run 265/35/19 front, the rolling diameter in the front and rear will be the same. This creates a lot of ECU intervention as it thinks the rear wheels are slipping, so power is reduced to attempt the slipping sensation.

A forum member ordered our track setup to mount the R-Compound tire sizes above, we'll post photos soon.

Respectfully,
Jimmy, Signature Wheel - BMW Specialist

Which tires did he go with? From what I have seen r888's dont come in 275/30/19.

Also, have you tested putting it in mdm mode and seeing if it still pulled power. Typically thats the mode I drive in when needs be.

[Signature Wheel BMW]

Originally Posted by zbrit00x

Which tires did he go with? From what I have seen r888's dont come in 275/30/19.

Also, have you tested putting it in mdm mode and seeing if it still pulled power. Typically thats the mode I drive in when needs be.

His wheels and tires should arrive in less than 5 weeks, we'll post full details then. I was just responding to the rear tire fitment.

Try to get Euro MDM coded if you haven't done so, it does help and less intervention with tire diameter delta. Even with Euro MDM, the traction control light isn't flashing but members have reported interventions. You can detect the intervention using OBDII BT enabled app that monitors throttle/brake application.

[Justin.AutoTalent]

Here's Shmelgy's car with the 305/30/19 R888 Rear.

We did 265/35/19 | 305/30/19 because the rolling diameter is exactly the same at 26.3....

.

[Shmelgy]

So I was rubbing in some places at first. Added more negative camber in the rear and a bit of toe in. Front camber is -2.9, rear is -2.3, rub free

[zbrit00x]

Originally Posted by Shmelgy

So I was rubbing in some places at first. Added more negative camber in the rear and a bit of toe in. Front camber is -2.9, rear is -2.3, rub free

Very clean setup! I will try to camber out the rear a bit, but for the front im pretty limited.