Smaller tyres?

BNTLY · 11-19-2018, 06:54 PM

I’m running 225/50/18 all around on my f34.

I found a set of wheels and tires 235/45/17 for an E46. I’d like to use these as a winter setup as the tires are Bridgestone blizzaks.

I know it’ll affect mpg and mph calculations but is there anything that would prevent me from doin it?

Kjae · 11-19-2018, 07:55 PM

Make sure they clear your brakes (correct offset). Otherwise should be fine.

Billfitz · 11-19-2018, 09:07 PM

Wider tires don't work as well in snow. If anything you'd want narrower, say 215/55.

BNTLY · 11-20-2018, 10:50 AM

Thanks for the insight, I appreciate it.

Looked at specs for a 2006 e46 and the offset is the same @ ET34.

However, if I use 17 it’s recommended I go 225/55/17

The difference in the aspect ratio worries me. Is the 10mm difference concerning?

11-19-2018, 06:54 PM	#1
BNTLY Master Chief 54 Rep 228 Posts Drives: F34 Join Date: Jun 2018 Location: Bay Area, CA iTrader: (0)	Smaller tyres? I’m running 225/50/18 all around on my f34. I found a set of wheels and tires 235/45/17 for an E46. I’d like to use these as a winter setup as the tires are Bridgestone blizzaks. I know it’ll affect mpg and mph calculations but is there anything that would prevent me from doin it?
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11-19-2018, 07:55 PM	#2
Kjae Private 4 Rep 55 Posts Drives: 2014 F34 335xdrive Join Date: Jun 2017 Location: MA iTrader: (0)	Make sure they clear your brakes (correct offset). Otherwise should be fine.
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11-19-2018, 09:07 PM	#3
Billfitz Lieutenant General 8221 Rep 16,054 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	Wider tires don't work as well in snow. If anything you'd want narrower, say 215/55.
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11-20-2018, 10:50 AM	#4
BNTLY Master Chief 54 Rep 228 Posts Drives: F34 Join Date: Jun 2018 Location: Bay Area, CA iTrader: (0)	Thanks for the insight, I appreciate it. Looked at specs for a 2006 e46 and the offset is the same @ ET34. However, if I use 17 it’s recommended I go 225/55/17 The difference in the aspect ratio worries me. Is the 10mm difference concerning? Last edited by BNTLY; 11-20-2018 at 11:00 AM..
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