M235i Winter Tires

danf15e · 10-25-2020, 04:06 PM

Hello everyone!

I currently live in Colorado and it has started to snow so I'm planning on putting winter tires on my stock 436M M235i wheels.
I understand that the wheels are 18x7.5 and 18x8 but I want to put 225/45/r18 all around. Will this work? Any other tire size recommendations?
Thank you in advance!

Estoril235 · 10-25-2020, 07:57 PM

Quote:

Originally Posted by danf15e

Hello everyone!

I currently live in Colorado and it has started to snow so I'm planning on putting winter tires on my stock 436M M235i wheels.
I understand that the wheels are 18x7.5 and 18x8 but I want to put 225/45/r18 all around. Will this work? Any other tire size recommendations?
Thank you in advance!

225/40/18 is the correct size, 45 may work if you're not lowered. You can run 225s on the 8 inch rear wheel.

230iZTR · 10-25-2020, 08:05 PM

I run 225/40/18 Michelin X-ice Xi3's on the stock staggered rims in winter. Its completely safe, and the narrowness is desirable because it helps ever so slightly with traction.

Pray for Mojo · 10-26-2020, 11:58 AM

I just made my stock staggered wheels my winter set after running 17s for 6 winters. Went with these sizes, I highly recommend, you get a bit more sidewall and more tire choices. Tires are Michelin Pilot Alpin PA4.

215/45/18
245/40/18

The diameter of the two is almost identical. You get more sidewall to protect your wheels and about an inch more ground clearance.

You could go square setup, but I think staggered with a bit wider on the rear is good when driving on dry cold pavement 90% of the time.

dradernh · 10-26-2020, 01:51 PM

Quote:

Originally Posted by Pray for Mojo

You get...about an inch more ground clearance.

Help me out, here; it's a 1/2" increase in ride height, isn't it?

Pray for Mojo · 10-26-2020, 04:49 PM

Quote:

Originally Posted by dradernh

Help me out, here; it's a 1/2" increase in ride height, isn't it?

Yeah you're right. I put so many possible sizes through the calculator I forgot the details. Overall diameter changes by 1" sidewall size by roughly 0.5". So you will ride about a 1/2" higher.

Front to back your diameter variance is only 0.38%, so even X-drive guys could run this setup.

10-25-2020, 04:06 PM	#1
danf15e New Member 0 Rep 7 Posts Drives: 2015 BMW M235i Join Date: Apr 2020 Location: Colorado Springs iTrader: (0)	M235i Winter Tires - Square tires on Stock Staggered Wheels? Hello everyone! I currently live in Colorado and it has started to snow so I'm planning on putting winter tires on my stock 436M M235i wheels. I understand that the wheels are 18x7.5 and 18x8 but I want to put 225/45/r18 all around. Will this work? Any other tire size recommendations? Thank you in advance!
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10-25-2020, 08:05 PM	#3
230iZTR Lieutenant 316 Rep 444 Posts Drives: Signal Orange wrapped 230i THP Join Date: Oct 2017 Location: Reno, NV iTrader: (0)	I run 225/40/18 Michelin X-ice Xi3's on the stock staggered rims in winter. Its completely safe, and the narrowness is desirable because it helps ever so slightly with traction. __________________ 17x9 APEX Arc8-R, 255/40/17 RE71RS, Vorshlag Plates, Swift Spec-R Springs, m-Performance Bumpstops, Dinan ShockWare, Paragon 2-piece rotors, Carbon lip, custom 3" alumalite splitter, GTS wing, FTP Intake and Charge pipe, BootMod3 Stage 1 OTS
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10-26-2020, 11:58 AM	#4
Pray for Mojo Major 430 Rep 1,115 Posts Drives: 2014 M235i & 2018 X3 M40i Join Date: Apr 2014 Location: Calgary iTrader: (0)	I just made my stock staggered wheels my winter set after running 17s for 6 winters. Went with these sizes, I highly recommend, you get a bit more sidewall and more tire choices. Tires are Michelin Pilot Alpin PA4. 215/45/18 245/40/18 The diameter of the two is almost identical. You get more sidewall to protect your wheels and about an inch more ground clearance. You could go square setup, but I think staggered with a bit wider on the rear is good when driving on dry cold pavement 90% of the time.
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