[Wahla]

Will oem style 666 wheels fit on my H&R (40/35) lowered F30? The specs on the 666 are:
Front: 20x9J et 29 with 265/30R20 PSS
Rear: 20x10J et 40 with 285/30R20 PSS

[alohasurftoad]

rear may rub under compression

at ET29, outer shoulder of front tire may graze/rub the front part of the fenderwell liner or tab while turning at or near full lock.

i'd move the 265/30/20 to the rear and change front tire size to 255/30/20 or 235/35/20.

try it out and let us know if it rubs or not.

fwiw at 11.55kg and 12.32 kg they are heavy for forged M wheels. with taller wider tires that heighten gearing, add rolling resistance and weight, there will be a more than negligible impact on acceleration and steering.
.

[BMWILUVU]

265 is very pokey in the front and may rub at 20" especially lowered.

[Wahla]

Originally Posted by alohasurftoad

rear may rub under compression

at ET29, outer shoulder of front tire may graze/rub the front part of the fenderwell liner or tab while turning at or near full lock.

i'd move the 265/30/20 to the rear and change front tire size to 255/30/20 or 235/35/20.

try it out and let us know if it rubs or not.

fwiw at 11.55kg and 12.32 kg they are heavy for forged M wheels. with taller wider tires that heighten gearing, add rolling resistance and weight, there will be a more than negligible impact on acceleration and steering.
.

Okay will look for either 225/35 or 235/35 fronts to be on the safe side. Are the front tires as important as the rear? Or can I stick with a more budget friendly option? Running just stage 1 328i so PSS seems a bit overkill.

[alohasurftoad]

Originally Posted by Wahla

Okay will look for either 225/35 or 235/35 fronts to be on the safe side. Are the front tires as important as the rear? Or can I stick with a more budget friendly option? Running just stage 1 328i so PSS seems a bit overkill.

front tires are more important than the rear because you are steering with them and the front brakes are the main brakes.

225/35 on 9" will be stretched to the point where if you touch a curb there will be no protection at all.

if you are leaving the rear with 285, it would be better paired with 255/30/20. i would try to avoid a 50mm stagger as it increases tendency to understeer in the curves. however if you predominantly go fast going straight only, i suppose it is fine because straight line stability would increase.

[Wahla]

Originally Posted by alohasurftoad

front tires are more important than the rear because you are steering with them and the front brakes are the main brakes.

225/35 on 9" will be stretched to the point where if you touch a curb there will be no protection at all.

if you are leaving the rear with 285, it would be better paired with 255/30/20. i would try to avoid a 50mm stagger as it increases tendency to understeer in the curves. however if you predominantly go fast going straight only, i suppose it is fine because straight line stability would increase.

I guess it will be some stretch on the rear tires as well with 265/30 on 10"? Some stretch is fine for me as long as it is not extreme. So some quality 235/35 on the fronts and move the 265/30 to the rears and I will be set without risks of rubbing? Will it provide approximately the same amount of stretch around?

[alohasurftoad]

Originally Posted by Wahla

I guess it will be some stretch on the rear tires as well with 265/30 on 10"? Some stretch is fine for me as long as it is not extreme. So some quality 235/35 on the fronts and move the 265/30 to the rears and I will be set without risks of rubbing? Will it provide approximately the same amount of stretch around?

yes, 265/30/20 is slight stretch on 10", whereas 275/30/20 sidewall will be perpendicular. 255/30/20 sidewall is perpendicular on 9" width.

your cars fitment will look somewhat like below but your front will be 1mm further out and stretched 1/4" more on a 9".
https://f30.bimmerpost.com/forums/sh....php?t=1598356

[alohasurftoad]

here is the 20" thread
https://f30.bimmerpost.com/forums/sh....php?t=1047084

if you are wondering about 245/35/20 front, it will rub the fenderwell liner at ET29 due to 26.8" height.

[Wahla]

Originally Posted by alohasurftoad

yes, 265/30/20 is slight stretch on 10", whereas 275/30/20 sidewall will be perpendicular. 255/30/20 sidewall is perpendicular on 9" width.

your cars fitment will look somewhat like below but your front will be 1mm further out and stretched 1/4" more on a 9".
https://f30.bimmerpost.com/forums/sh....php?t=1598356

That fitment looks awesome! Any reccomendations on tires (235/35 R20) that are similar to the PSS? Cant seem to find them.

[Wahla]

Originally Posted by alohasurftoad

here is the 20" thread
https://f30.bimmerpost.com/forums/sh....php?t=1047084

if you are wondering about 245/35/20 front, it will rub the fenderwell liner at ET29 due to 26.8" height.

Okay so 265/30 in the front are no-go?

[alohasurftoad]

Originally Posted by Wahla

Okay so 265/30 in the front are no-go?

At ET29 265/30/20 will probabaly rub while turning at or near full lock. If it does, adding negative camber may resolve it. Let us know how it goes.

[Dang3r]

You want to run the tire/rim dimensions of the M4 comp on your tiny 3 series?
That'll look riced and as already read add some rubber to your wheel wells.

[J555]

As suggested by alohasurftoad, 235/35 + 265/30 (275/30 for x-drive) is the best you can do. With such low profile, I'd recommend buying some comfier tires - Falken FK510 or 520 are possibly the first choice as more budget friendly, still very good tires.

[_ObiJon]

Originally Posted by J555

As suggested by alohasurftoad, 235/35 + 265/30 (275/30 for x-drive) is the best you can do. With such low profile, I'd recommend buying some comfier tires - Falken FK510 or 520 are possibly the first choice as more budget friendly, still very good tires.

This is my 428i xDrive with 245/35 Falken FK510s on 666m's for reference.

[Onizukachan]

If you like the look of 666m, Just get the Alzor 19x8.5 et33’s