225/55 r17 winters on 17x8

coder · 12-14-2015, 01:48 PM

I have 17x8 all around for my winter setup.
Friend is selling a set of Blizzak WS 225/55 r17, wondering if it would fit without rub.
Wheels are motegi mr11878052745 (17x8 5-120 ET-45).
I'm replacing 215/45r17.

Sorry if this is covered, I didn't have much luck searching the forums/internets for this setup.

Fume · 12-14-2015, 01:55 PM

225/45R17 is the proper sizing (stock on 128i). 225/55/R17 fills the wheel well by almost 1 inch more. My guess is it'll be too tall.

one 35i · 12-16-2015, 08:29 PM

Should not be a problem. Sidewall is 10mm taller but that is only roughly 1/2 inch. Considering that some people run 19" rims and you are at 17" then no problem. Call Tire Rack if you want to verify--they are usually good for info such as this.

Iron Man · 12-17-2015, 08:16 AM

Quote:

Originally Posted by one 35i

Should not be a problem. Sidewall is 10mm taller but that is only roughly 1/2 inch. Considering that some people run 19" rims and you are at 17" then no problem. Call Tire Rack if you want to verify--they are usually good for info such as this.

It is not the rim diameter you need to compare, but the overall wheel diameter that is the issue. 225/55/17 is 7.1% larger than 225/45/17 (~26.7" vs. ~25"), so the speedometer would be way off (~6.6%). Changing rim size is not an issue, if you keep the overall wheel diameter close to the original (usual rule of thumb is ~3% or less).

Gary@TireRack · 12-17-2015, 09:39 AM

Quote:

Originally Posted by Iron Man

It is not the rim diameter you need to compare, but the overall wheel diameter that is the issue. 225/55/17 is 7.1% larger than 225/45/17 (~26.7" vs. ~25"), so the speedometer would be way off (~6.6%). Changing rim size is not an issue, if you keep the overall wheel diameter close to the original (usual rule of thumb is ~3% or less).

+1

225/55R17 is too tall to fit.

one 35i · 12-17-2015, 08:43 PM

Great to have such a forum where the knowledge base is shared. Sorry, I didn't mean to mislead on the original question!

12-14-2015, 01:48 PM	#1
coder New Member 6 Rep 17 Posts Drives: 2009 135i "m sport pkg" Join Date: Oct 2012 Location: Detroit iTrader: (0)	225/55 r17 winters on 17x8 I have 17x8 all around for my winter setup. Friend is selling a set of Blizzak WS 225/55 r17, wondering if it would fit without rub. Wheels are motegi mr11878052745 (17x8 5-120 ET-45). I'm replacing 215/45r17. Sorry if this is covered, I didn't have much luck searching the forums/internets for this setup. Last edited by coder; 12-14-2015 at 01:54 PM.. Reason: Add more info on rims
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12-14-2015, 01:55 PM	#2
Fume First Lieutenant 52 Rep 374 Posts Drives: '19 Porsche 718 Cayman GTS Join Date: Jul 2013 Location: Seattle iTrader: (1)	225/45R17 is the proper sizing (stock on 128i). 225/55/R17 fills the wheel well by almost 1 inch more. My guess is it'll be too tall. __________________ New Car: 2019 Porsche 718 Cayman GTS \| Stock for now Old Car: 2013 BMW 128i \| 6MT \| BMW Performance Grills \| CDV Delete \| SSK \| Performance Exhaust \| M3 RSFB \| TCKR DA
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12-16-2015, 08:29 PM	#3
one 35i Second Lieutenant 27 Rep 240 Posts Drives: CSM/terra Join Date: Mar 2008 Location: sold iTrader: (3)	tires Should not be a problem. Sidewall is 10mm taller but that is only roughly 1/2 inch. Considering that some people run 19" rims and you are at 17" then no problem. Call Tire Rack if you want to verify--they are usually good for info such as this.
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12-17-2015, 08:43 PM	#6
one 35i Second Lieutenant 27 Rep 240 Posts Drives: CSM/terra Join Date: Mar 2008 Location: sold iTrader: (3)	tires Great to have such a forum where the knowledge base is shared. Sorry, I didn't mean to mislead on the original question!
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