[TSiSPY007]

Hey guys,

Really hoping the wheel/tire gurus can give me a definitive answer once and for all.

Am I correct in assuming that the new MPS4S will be similar dimensions to the MPSS, and that a 235/40-19 and 265/35-19 set-up is ideal for my 2013 335i xDrive going on some new 19"x8.5" +35 and 19"x9.5" +35 rims (currently lowered on coils to 0.75" wheel gap in front and 0.25" wheel gap in rear with the 400M and 441M wheels I've been running in summer/winter; I'm using 10mm spacers in front and 15mm in rear right now but hope not to have to use them for the new wheels unless necessary)?

I shouldn't get any rubbing on fender or suspension parts, right? Or should I go with a lower-profile 235/35-19 265/3-19?

This is what the 40 profile tires on the 8.5" +35 rim would be in front:

http://www.willtheyfit.com/index.php...8-5&offset2=35

And the 35 profile on the 9.5" +35 rear:

http://www.willtheyfit.com/index.php...9-5&offset2=35

Thanks for your feedback!

Fred

[mr_kay]

265/35 might rub in the rear depending on your alignment, height, dips in the road and passenger weight. 265/30 would be safe but its a bit of a thin sidewall. 255/35 would work as well and is the OEM size for 19" wheels.

[Kabrich]

Originally Posted by TSiSPY007

Hey guys,

Really hoping the wheel/tire gurus can give me a definitive answer once and for all.

Am I correct in assuming that the new MPS4S will be similar dimensions to the MPSS, and that a 235/40-19 and 265/35-19 set-up is ideal for my 2013 335i xDrive going on some new 19"x8.5" +35 and 19"x9.5" +35 rims (currently lowered on coils to 0.75" wheel gap in front and 0.25" wheel gap in rear with the 400M and 441M wheels I've been running in summer/winter; I'm using 10mm spacers in front and 15mm in rear right now but hope not to have to use them for the new wheels unless necessary)?

I shouldn't get any rubbing on fender or suspension parts, right? Or should I go with a lower-profile 235/35-19 265/3-19?

This is what the 40 profile tires on the 8.5" +35 rim would be in front:

http://www.willtheyfit.com/index.php...8-5&offset2=35

And the 35 profile on the 9.5" +35 rear:

http://www.willtheyfit.com/index.php...9-5&offset2=35

Thanks for your feedback!

Fred

Your incorrect assumption is that the MPSS are identical to the MPS4S....or that a 235, 265 (or any tire for that matter) is really the width stated.

You need to research the specs.

For example the MPSS Tread Width is 234mm while the MPS4S is 216mm, while the rear MPS4S is wider than the MPSS in the rear.

See:

http://f30.bimmerpost.com/forums/sho...20&postcount=1

[mineral_f30]

Originally Posted by Kabrich

Your incorrect assumption is that the MPSS are identical to the MPS4S....or that a 235, 265 (or any tire for that matter) is really the width stated.

You need to research the specs.

For example the MPSS Tread Width is 234mm while the MPS4S is 216mm, while the rear MPS4S is wider than the MPSS in the rear.

See:

http://f30.bimmerpost.com/forums/sho...20&postcount=1

I think you are confusing Section Width with Tread Width:

Section Width: https://www.tirerack.com/tires/tiret...jsp?techid=200

Tread Width:https://www.tirerack.com/tires/tiret...jsp?techid=201

The listed width of a tire 235 (front) or 265 (rear) is the section width. That's the measurement of the tire's width from its inner sidewall to its outer sidewall, which is consistent of all tires listed in that size for all brands and models.
This is what the OP is concerned about, since he's asking about fitment and potential rubbing.

The tread width is the contact patch, ie. the width of the tread that comes into contact with the road.
It makes me wonder about the huge 1-inch difference in the MPSS (9.2 inches) vs. the Conti ECS (8.2 inches) for the 235 fronts!

[Kabrich]

Originally Posted by mineral_f30

I think you are confusing Section Width with Tread Width:

Section Width: https://www.tirerack.com/tires/tiret...jsp?techid=200

Tread Width:https://www.tirerack.com/tires/tiret...jsp?techid=201

The listed width of a tire 235 (front) or 265 (rear) is the section width. That's the measurement of the tire's width from its inner sidewall to its outer sidewall, which is consistent of all tires listed in that size for all brands and models.
This is what the OP is concerned about, since he's asking about fitment and potential rubbing.

The tread width is the contact patch, ie. the width of the tread that comes into contact with the road.
It makes me wonder about the huge 1-inch difference in the MPSS (9.2 inches) vs. the Conti ECS (8.2 inches) for the 235 fronts!

If you think none of that makes a difference in your "will it rub" question, best of luck to you. (It also flys in the face of anyone who has examined a BMW Star MPSS with a Generic MPSS, especially the larger size rears.)

[TSiSPY007]

Thanks for the input, guys!

I'm still not clear whether I should go with a 235/40-19 and 265/35-19 combo (minimal discrepency between front/rear and more sidewall/overall-diameter) or a 235/35-19 and 265/30-19 (less chance of rubbing) on my xDrive and the wheels/lowering I stated in the original post... a local tire dealer said to stick with OEM 225/40-19 255/35-19.

Thoughts?

Thanks.

Fred

[alohasurftoad]

not sure about the rubbing but 235/35F, 265/30R diameters are smaller than 26" oem spec so your speedo/odometer will read higher than actual. in the grand scheme it prolly doesn't make that much of a difference but rather stay close to 26" or a lil more if anything. so i prefer the 235/40F, 265/35R combo...

[Morasool]

Originally Posted by TSiSPY007

Thanks for the input, guys!

I'm still not clear whether I should go with a 235/40-19 and 265/35-19 combo (minimal discrepency between front/rear and more sidewall/overall-diameter) or a 235/35-19 and 265/30-19 (less chance of rubbing) on my xDrive and the wheels/lowering I stated in the original post... a local tire dealer said to stick with OEM 225/40-19 255/35-19.

Thoughts?

Thanks.

Fred

I have 235/40-19 and 265-35-19 on my 8.5" & 9.5" alloys. No rubbing at all.

See the images:

[mineral_f30]

Originally Posted by Morasool

I have 235/40-19 and 265-35-19 on my 8.5" & 9.5" alloys. No rubbing at all.

+35 offset with the 9.5" rears?

I'm in the same boat as OP.
Bought new wheels for the summer and hoping 265 will fit without issues.
Leaning towards Conti ECS instead of the MPSS though.

[Morasool]

Originally Posted by mineral_f30

+35 offset with the 9.5" rears?

I'm in the same boat as OP.
Bought new wheels for the summer and hoping 265 will fit without issues.
Leaning towards Conti ECS instead of the MPSS though.

yes +35 ofset

[TSiSPY007]

Originally Posted by Morasool

yes +35 ofset

Wow, that's great to hear, Marasool! Thanks so much for the feedback. Car looks *beautiful*, btw!

I'm sitting a bit lower than you, and my local tire guy;s been very helpful and is recommending I go with the OEM 225/40-19 and 255/35-19. That might be more sensible without too much diff in the width...should I still be going with the 8.5" +35 wheel in front and 9.5" +35 wheel in rear?

What have you decided on, mineral_f30? And what's your deciding factor going with the ECS vs. MPS4S (or were you considering the MPSS)?

Fred

[mr_kay]

Originally Posted by TSiSPY007

Wow, that's great to hear, Marasool! Thanks so much for the feedback. Car looks *beautiful*, btw!

I'm sitting a bit lower than you, and my local tire guy;s been very helpful and is recommending I go with the OEM 225/40-19 and 255/35-19. That might be more sensible without too much diff in the width...should I still be going with the 8.5" +35 wheel in front and 9.5" +35 wheel in rear?

What have you decided on, mineral_f30? And what's your deciding factor going with the ECS vs. MPS4S (or were you considering the MPSS)?

Fred

I've have two sets of wheels with x8.5 +35 and x9.5 +35. Perfect fitment I think. I'm lowered quite a bit and with some camber in the rear, I don't rub at all.

[TSiSPY007]

Originally Posted by mr_kay

I've have two sets of wheels with x8.5 +35 and x9.5 +35. Perfect fitment I think. I'm lowered quite a bit and with some camber in the rear, I don't rub at all.

Car looks amazing, mr_kay! Are you xDrive? And is the camber just the "natural" camber from the suspension compressing more as it sits lower?

Thx! Really appreciate it.

Fred

[mr_kay]

Originally Posted by TSiSPY007

Car looks amazing, mr_kay! Are you xDrive? And is the camber just the "natural" camber from the suspension compressing more as it sits lower?

Thx! Really appreciate it.

Fred

I'm RWD. The natural camber wasn't enough so I had them add some more when I got an alignment. You can add up to -3 degrees with the stock camber setup.