Silly question

Llep64 · 08-13-2019, 04:30 PM

Hello! I have a question.. i have a
2017 320 with 18 wheels, the current tires are 225/40/18 I have a chance to get some 225/40/18 for the front and
255/40/18 for the rear, will this work? I could also get some 235/40/18 for the front for about the same price... please advise
Thank you!

BeerHerder · 08-13-2019, 05:10 PM

Try posting over in the wheels, tires, suspension section. Those guys are geniuses with these kinds of questions.

FastF30 · 08-13-2019, 05:22 PM

you need 8.5" wide wheels for 255 tires to fit properly... 235's in the front and 255's in the rear might be out of the allowable range for the drivetrain if you have xdrive... no biggy if just rear wheel drive...

jh_f30 · 08-13-2019, 11:50 PM

OE tire sizes should've been 225/45/18. I had the same 397 stock wheels on my Sportline. They are 18x8. Ran 245/40/18 square without issue, any bigger is beyond the recommended width range for 8" wide wheels.

WallySlash · 08-14-2019, 10:29 PM

Quote:

Originally Posted by jh_f30

OE tire sizes should've been 225/45/18. I had the same 397 stock wheels on my Sportline. They are 18x8. Ran 245/40/18 square without issue, any bigger is beyond the recommended width range for 8" wide wheels.

Currently running 245/40/18. 2014 F32 xDrive. Any larger and you will have rubbing issues when turning from lock to lock.

Llep64 · 08-14-2019, 11:22 PM

Quote:

Originally Posted by WallySlash

Quote:

Originally Posted by jh_f30

OE tire sizes should've been 225/45/18. I had the same 397 stock wheels on my Sportline. They are 18x8. Ran 245/40/18 square without issue, any bigger is beyond the recommended width range for 8" wide wheels.

Currently running 245/40/18. 2014 F32 xDrive. Any larger and you will have rubbing issues when turning from lock to lock.

How do you like it? I'm afraid it will look too wide and small? Do you have a picture of your car? Thanks and sorry to bother

BWbimmer · 08-15-2019, 05:09 AM

Quote:

Originally Posted by Llep64

Hello! I have a question.. i have a
2017 320 with 18 wheels, the current tires are 225/40/18 I have a chance to get some 225/40/18 for the front and
255/40/18 for the rear, will this work? I could also get some 235/40/18 for the front for about the same price... please advise
Thank you!

The sidewall is 4mm higher betwenn 225 and 235. Can this be noticed?

WallySlash · 08-17-2019, 08:01 AM

Quote:

Originally Posted by Llep64

How do you like it? I'm afraid it will look too wide and small? Do you have a picture of your car? Thanks and sorry to bother

I like the look and road feel.

View post on imgur.com

kern417 · 08-17-2019, 09:28 PM

Quote:

Originally Posted by jh_f30

OE tire sizes should've been 225/45/18. I had the same 397 stock wheels on my Sportline. They are 18x8. Ran 245/40/18 square without issue, any bigger is beyond the recommended width range for 8" wide wheels.

This is your best bet for a square setup. 235/40 is a good option too.

BWbimmer · 08-18-2019, 03:21 AM

Just be aware, when you don't run the same diameter square you will ruin your transfer box on an XDrive. We have quite a few cases here in Germany, where BMW did not pay in the warranty period just because the tires were not up to their specs. Even not having the * on the sidewal made them pull out...

thatBimmerBloke · 08-19-2019, 09:59 AM

Quote:

Originally Posted by WallySlash

Currently running 245/40/18. 2014 F32 xDrive. Any larger and you will have rubbing issues when turning from lock to lock.

Currently running 255/40/18 MPSS on 18x8.5 ET38 all around on '16 F32 xDrive, no rubbing whatsoever, also MPSS runs a bit wider than usual. I asked a few members before going for it, even they never had any issues.

kern417 · 08-19-2019, 11:28 AM

Quote:

Originally Posted by thatBimmerBloke

Currently running 255/40/18 MPSS on 18x8.5 ET38 all around on '16 F32 xDrive, no rubbing whatsoever, also MPSS runs a bit wider than usual. I asked a few members before going for it, even they never had any issues.

OP's front wheels are 18x8 et32. So not only are they too skinny for 255 tires but they will poke 8mm farther than yours do. It's not the same setup.

thatBimmerBloke · 08-19-2019, 11:38 AM

Quote:

Originally Posted by kern417

OP's front wheels are 18x8 et32. So not only are they too skinny for 255 tires but they will poke 8mm farther than yours do. It's not the same setup.

Yes, on 8" wide wheel 255 won't work, 245 will be the max width for that. Also I think 397 has ET34? I was replying to another member, I thought he mean 255 causes rubbing issues.

kern417 · 08-19-2019, 12:03 PM

Quote:

Originally Posted by thatBimmerBloke

Yes, on 8" wide wheel 255 won't work, 245 will be the max width for that. Also I think 397 has ET34? I was replying to another member, I thought he mean 255 causes rubbing issues.

Yeah you're right

jdg54 · 08-19-2019, 08:04 PM

Go 235/45/18 square. It fills the wheel well gap quite nicely.

08-13-2019, 04:30 PM	#1
Llep64 Private First Class 18 Rep 161 Posts Drives: BMW 320i Join Date: Oct 2017 Location: Denton iTrader: (0)	Silly question Hello! I have a question.. i have a 2017 320 with 18 wheels, the current tires are 225/40/18 I have a chance to get some 225/40/18 for the front and 255/40/18 for the rear, will this work? I could also get some 235/40/18 for the front for about the same price... please advise Thank you! Attached Images
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08-13-2019, 05:10 PM	#2
BeerHerder Lieutenant 251 Rep 426 Posts Drives: F30 335, G01 X3, Victory Vegas Join Date: Mar 2019 Location: IL iTrader: (1)	Try posting over in the wheels, tires, suspension section. Those guys are geniuses with these kinds of questions. __________________ Glacier Silver Metallic 335i X-Drive - Can't leave well enough alone... Fabspeed DP, Wagner Evo Comp II IC, ER CP, BM3 Stage 2 93 OTS, Bimmertech Amp (more to come... always more) Graphite Metallic X3 (nothing yet, but... you know)
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08-13-2019, 05:22 PM	#3
FastF30 Lieutenant Colonel 521 Rep 1,288 Posts Drives: 2015 335i xdrive Msport Mbrake Join Date: Dec 2017 Location: Middle of the Road iTrader: (0) Garage List 2015 BMW 335i Xdrive [0.00]	you need 8.5" wide wheels for 255 tires to fit properly... 235's in the front and 255's in the rear might be out of the allowable range for the drivetrain if you have xdrive... no biggy if just rear wheel drive...
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08-13-2019, 11:50 PM	#4
jh_f30 Lieutenant Colonel 1308 Rep 1,827 Posts Drives: 2013 335i Sportline Auto RWD Join Date: Aug 2017 Location: Bay Area, CA iTrader: (2)	OE tire sizes should've been 225/45/18. I had the same 397 stock wheels on my Sportline. They are 18x8. Ran 245/40/18 square without issue, any bigger is beyond the recommended width range for 8" wide wheels. __________________ 2013 F30 335i RWD ZF Melbourne Red ~Remus Sport Axleback~VRSF Chargepipe~VRSF Catless Downpipe~GPlus FMIC~HR Sport Springs~Active Autowerke OBD Flash Tune Stage 2~
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08-18-2019, 03:21 AM	#10
BWbimmer Captain 277 Rep 833 Posts Drives: BMW F36, E36, E93 Join Date: Jul 2019 Location: Germany iTrader: (0) Garage List 08/2017 440i GC MPPSK [0.00]	Just be aware, when you don't run the same diameter square you will ruin your transfer box on an XDrive. We have quite a few cases here in Germany, where BMW did not pay in the warranty period just because the tires were not up to their specs. Even not having the * on the sidewal made them pull out... Last edited by BWbimmer; 08-18-2019 at 03:26 AM..
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08-19-2019, 08:04 PM	#15
jdg54 Second Lieutenant 95 Rep 224 Posts Drives: 2018 F30 340i Xdrive Join Date: Dec 2018 Location: Northern NJ iTrader: (0)	Go 235/45/18 square. It fills the wheel well gap quite nicely.
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