Sponsored by The Tire Rack

[mle]

Hello,

what do you think ? Do i need spaces @ front / rear at my BMW e92 M3 ?

Front 1: Apex EC-7 9.5x18 ET 22 with 265/35 R 18 Federals 595 RSR
Front 2: Apex EC-7 10x18 ET 27 with 265/35 R 18 Federals 595 RSR
Rear: Apex EC-7 11x18 ET 25 with 285/30 R 18 Federals 595 RSR

Thank you

[ApexWheels]

Originally Posted by mle

Hello,

what do you think ? Do i need spaces @ front / rear at my BMW e92 M3 ?

Front 1: Apex EC-7 9.5x18 ET 22 with 265/35 R 18 Federals 595 RSR
Front 2: Apex EC-7 10x18 ET 27 with 265/35 R 18 Federals 595 RSR
Rear: Apex EC-7 11x18 ET 25 with 285/30 R 18 Federals 595 RSR

Thank you

Hello,

All of those wheels/tires would fit without spacers or rubbing. The 285/30/18 tire will be a little bit short in the rear; we would recommend a 295/30/18, but I understand that the Federal RS-R does not come in that size. We would also recommend a 275/35/18 for the 18x10" ET25 front wheel, but the Federal RS-R does not come in that size either.

Please let us know if you have any other questions for your fitment and we'd be happy to help you out, thanks!

[mle]

Originally Posted by ApexRaceParts

Hello,

All of those wheels/tires would fit without spacers or rubbing. The 285/30/18 tire will be a little bit short in the rear; we would recommend a 295/30/18, but I understand that the Federal RS-R does not come in that size. We would also recommend a 275/35/18 for the 18x10" ET25 front wheel, but the Federal RS-R does not come in that size either.

Please let us know if you have any other questions for your fitment and we'd be happy to help you out, thanks!

Thank you. KW V3 is installed at the moment. Any rubbing problems with this setup?

[slicer]

Originally Posted by ApexRaceParts

Hello,

All of those wheels/tires would fit without spacers or rubbing. The 285/30/18 tire will be a little bit short in the rear; we would recommend a 295/30/18, but I understand that the Federal RS-R does not come in that size. We would also recommend a 275/35/18 for the 18x10" ET25 front wheel, but the Federal RS-R does not come in that size either.

Please let us know if you have any other questions for your fitment and we'd be happy to help you out, thanks!

Why don't you ask if he has KW coilovers? Your wheels will rub with KW's.

Originally Posted by mle

Thank you. KW V3 is installed at the moment. Any rubbing problems with this setup?

Yes the 10" wheel will certainly rub (need at least 5mm spacers or possibly 10mm). The 9.5" et22 will probably also rub but that depends on how wide the tire is. I run 5mm spacers on my et22 wheels with 275/35/18 tires.

[ApexWheels]

Originally Posted by mle

Thank you. KW V3 is installed at the moment. Any rubbing problems with this setup?

Originally Posted by slicer

Yes the 10" wheel will certainly rub (need at least 5mm spacers or possibly 10mm). The 9.5" et22 will probably also rub but that depends on how wide the tire is. I run 5mm spacers on my et22 wheels with 275/35/18 tires.

No problem mle. I was unaware that KW's were installed on your car. The 18x10" ET25 will require a 5mm spacer to clear the front suspension with those tires. Some other less aggressive street tires in 265/35/18 may be able to clear the suspension issues without a spacer. The 18x9.5" ET22 should be fine with 265/35/18 Federal RS-R's because the rim is both narrower and lower offset which pushes it away from the suspension.

[pkimM3r]

Originally Posted by ApexRaceParts

No problem mle. I was unaware that KW's were installed on your car. The 18x10" ET25 will require a 5mm spacer to clear the front suspension with those tires. Some other less aggressive street tires in 265/35/18 may be able to clear the suspension issues without a spacer. The 18x9.5" ET22 should be fine with 265/35/18 Federal RS-R's because the rim is both narrower and lower offset which pushes it away from the suspension.

Didnt really clear with 265 and had to raise the car and use 3mm soacers just in case mnow i have 275 up front with 5mm spacers. I ride kw cs.

[mle]

Originally Posted by pkim1079

Didnt really clear with 265 and had to raise the car and use 3mm soacers just in case mnow i have 275 up front with 5mm spacers. I ride kw cs.

So it rubbed with 265/35 with 9.5x18 ET 22 at the front ?

BTW what about 285/30 with 10.5x18 ET 27 @ rear ? Any rubbing problems ?

[pkimM3r]

Originally Posted by mle

So it rubbed with 265/35 with 9.5x18 ET 22 at the front ?

BTW what about 285/30 with 10.5x18 ET 27 @ rear ? Any rubbing problems ?

ahh sorry thought you were riding on a 10et25

[mle]

I will change to KW Clubsport (camber) with ~2.5 front and ~2 rear with:

-265/35 Federal RSR 595 + 9.5x18 ET 22 Apex EC7 front
-285/30 Federal RSR 595 + 11x18 ET 25 Apex EC7 Rear

what mm spacers do i need @ front and rear for no rubbing?

Are there any exp.?

Thank you

[slicer]

Originally Posted by mle

I will change to KW Clubsport (camber) with ~2.5 front and ~2 rear with:

-265/35 Federal RSR 595 + 9.5x18 ET 22 Apex EC7 front
-285/30 Federal RSR 595 + 11x18 ET 25 Apex EC7 Rear

what mm spacers do i need @ front and rear for no rubbing?

Are there any exp.?

Thank you

I would not recommend a 285/30/18 tire in the rear. It's more than 1" smaller diameter than OEM plus it's a smaller diameter than the front tire (while OEM is just the opposite - larger diameter in the rear). 285/35/18 is a better fit. Those federal tires are not available in proper M3 sizes, I would choose something different.

[mle]

Originally Posted by slicer

I would not recommend a 285/30/18 tire in the rear. It's more than 1" smaller diameter than OEM plus it's a smaller diameter than the front tire (while OEM is just the opposite - larger diameter in the rear). 285/35/18 is a better fit. Those federal tires are not available in proper M3 sizes, I would choose something different.

Well thank you. A friend of mine tried 265/285 many times @ track days. Its quite nice on 1 M and M3. So i wanted to try it too.

What do you think about the spacers ?

[slicer]

Originally Posted by mle

Well thank you. A friend of mine tried 265/285 many times @ track days. Its quite nice on 1 M and M3. So i wanted to try it too.

What do you think about the spacers ?

Possibly a 3mm or 5mm spacer in the front to clear the coilovers and none needed in the rear.

Federal tires don't have a good reputation (here in the US at least) and the sizing is not right IMO. I'm not sure why you would go that route.

[mle]

Originally Posted by mle

Well thank you. A friend of mine tried 265/285 many times @ track days. Its quite nice on 1 M and M3. So i wanted to try it too.

What do you think about the spacers ?

Do you think 6mm/wheel is too much? <6mm i will loose the aligment.

[slicer]

Originally Posted by mle

Do you think 6mm/wheel is too much? <6mm i will loose the aligment.

I'm not sure that I understand your question but if you are asking whether spacers will impact your alignment then the answer is no. Some people theorize that the alignment changes with spacers or a change in wheel offset but If it does; it's completely immaterial IMO.

[mle]

Originally Posted by slicer

I'm not sure that I understand your question but if you are asking whether spacers will impact your alignment then the answer is no. Some people theorize that the alignment changes with spacers or a change in wheel offset but If it does; it's completely immaterial IMO.

Well sorry i meant there are no spacers with "hub centric" <6mm. Is 6mm/wheel too much for this offset and 2.5 ?

[slicer]

Originally Posted by mle

Well sorry i meant there are no spacers with "hub centric" <6mm. Is 6mm/wheel too much for this offset and 2.5 ?

I'm not aware of any 6mm spacers in existence. It's either 3mm or 5mm. I use 5mm spacers all of the time without any adverse affects. Extra care does need to be taken when installing any spacer but a non-hubcentric spacer requires a little extra effort. I always make sure to tighten the lugs without any weight on the wheels. However, you can't fully torque the front wheels without a little weight on them (front wheel spins freely). I tighten the lugs as much as I can with the wheel in the air (using a star pattern). I then lower the car slowly until the front wheel touches the ground but still has very little weight on it. I then torque them to 88-90 ft/lbs.

As far as rubbing; I wouldn't have suggested the spacers if they would cause rubbing. I have ran 9.5" wheels with offsets ranging from et15 to et22 with 275mm tires. My car has -2 degrees of camber and they do not rub on the outside. I found that 9.5" et22 wheels with 275mm tires very slightly rubbed my KW spring perch. That is why I suggested a spacer with your proposed tire size (265/35/18). You may not need the spacer; it will depend on the shape and width of your tire (actual tire sizes vary from manufacturer to manufacturer). Camber in no way impacts the tire's inner clearance to the strut.

I hope all of that clears up any confusion.

[s85e90]

Originally Posted by slicer

Possibly a 3mm or 5mm spacer in the front to clear the coilovers and none needed in the rear.

Federal tires don't have a good reputation (here in the US at least) and the sizing is not right IMO. I'm not sure why you would go that route.

They have been making a wave w/ their new tires. Specifically the 595 r in motorsports. Seems to be a good tire, but the sizing isn't too great

[mle]

Originally Posted by slicer

I'm not aware of any 6mm spacers in existence. It's either 3mm or 5mm. I use 5mm spacers all of the time without any adverse affects. Extra care does need to be taken when installing any spacer but a non-hubcentric spacer requires a little extra effort. I always make sure to tighten the lugs without any weight on the wheels. However, you can't fully torque the front wheels without a little weight on them (front wheel spins freely). I tighten the lugs as much as I can with the wheel in the air (using a star pattern). I then lower the car slowly until the front wheel touches the ground but still has very little weight on it. I then torque them to 88-90 ft/lbs.

As far as rubbing; I wouldn't have suggested the spacers if they would cause rubbing. I have ran 9.5" wheels with offsets ranging from et15 to et22 with 275mm tires. My car has -2 degrees of camber and they do not rub on the outside. I found that 9.5" et22 wheels with 275mm tires very slightly rubbed my KW spring perch. That is why I suggested a spacer with your proposed tire size (265/35/18). You may not need the spacer; it will depend on the shape and width of your tire (actual tire sizes vary from manufacturer to manufacturer). Camber in no way impacts the tire's inner clearance to the strut.

I hope all of that clears up any confusion.

Its a german company (SCC): http://spurverbreiterung.de/product_...-%20M390,%20M3

They built special spacers, e.g. double hub centric spacers with 6mm and 5x120.

the federal rsr 595 265/30 ~ 275mm. So you think a non hub metric spacers wont cause problems, e.g. steering wheel shiver or something like that ?

What do you think about 265/30 (275) with 9.5x18 et 22 with 10mm spacers each wheel, so 9.5x18 et12 with 265/30 (275). Rubbing outside?

[slicer]

Originally Posted by mle

the federal rsr 595 265/30 ~ 275mm. So you think a non hub metric spacers wont cause problems, e.g. steering wheel shiver or something like that ?

I already answered this above... No, not if they are installed correctly. And I don't see how it is possible to have a hub-centric spacer with anything thinner than 10mm. The hub protrusion is 10mm or 11mm. A 5mm spacer is not hub-centric but it allows 5mm to 6mm of hub to remain exposed; allowing the wheel to remain hub-centric.

Originally Posted by mle

What do you think about 265/30 (275) with 9.5x18 et 22 with 10mm spacers each wheel, so 9.5x18 et12 with 265/30 (275). Rubbing outside?

Do you mean 265/30 or 265/35? 265/30 is also far too small of a diameter. I don't see the purpose of going down to 18" wheels and then putting 30-series tires which are suitable for 19" wheels. You are partially defeating the purpose of going with 18's which allow a taller sidewall (if you use proper tire sizes).

Running a 10mm spacer can be done and you will probably be OK with -2.5 degrees of camber but it will be tight. Give it a try and report back. I know that 5mm spacers will work, and again, you may not even need spacers.

[mle]

Originally Posted by slicer

I already answered this above... No, not if they are installed correctly. And I don't see how it is possible to have a hub-centric spacer with anything thinner than 10mm. The hub protrusion is 10mm or 11mm. A 5mm spacer is not hub-centric but it allows 5mm to 6mm of hub to remain exposed; allowing the wheel to remain hub-centric.



Do you mean 265/30 or 265/35? 265/30 is also far too small of a diameter. I don't see the purpose of going down to 18" wheels and then putting 30-series tires which are suitable for 19" wheels. You are partially defeating the purpose of going with 18's which allow a taller sidewall (if you use proper tire sizes).

Running a 10mm spacer can be done and you will probably be OK with -2.5 degrees of camber but it will be tight. Give it a try and report back. I know that 5mm spacers will work, and again, you may not even need spacers.

Ofc i meant 265/35/18 sorry.

I'll try it. A friend of mine has this setup on track. No problems

285/30-18 michelin cups square 10x18 ET25 with 10mm spacers front and 3* front and 2,1* rear. But thats extreme.