BMW 207M Wheel Weight?

128_Pilot · 12-05-2011, 10:17 AM

Hello all,

Searching here I read once the OEM double spoke (Style 207M) alloy wheels in 17 x 7.0 front, 17 x 7.5 rear come in at 22.5lbs each.

Can anyone confirm this?

SIDE NOTE:

The OE Goodyear's EMT 205/50-17 & 225/45-17 come in at 26.0lbs each.

That's 48.5lbs per corner of unsprung weight.

Replacing the wheels with ARC-8's in 18x8.5" sq that weigh 18.1lbs and the 245/35-18 Michelin PSS (new sku for them spring of 2012) which might weigh in at 22lbs each.

Savings in unsprung weight would be 8.4lbs per corner.

wolfe · 12-05-2011, 10:29 AM

For the 207M wheels, I believe the fronts are 10.13kg (22.3 lbs), and the rears are 10.16kg (22.4 lbs). The stock runflat tires are really heavy, presumably because the sidewalls are so tall and so thick.

I've just replaced my 207M's (and runflats) with some 18x8 and 18x9 wheels, with regular tires. I reduced unsprung weight by a little, but as far as I know it's not just the weight - it's how it's distributed from the center of the hub.

I would say mine 'feel' about the same weight on the car, or perhaps a fraction heavier. The extra grip should be amazing though. With something as light as you're going with, I'm sure that won't be an issue at all.

szcyxzh · 12-05-2011, 11:06 AM

I keep the 207M with a set of Conti DWS. Will replace prob four years later. Not bad looking and not bad function.

Dackelone · 12-05-2011, 11:16 AM

Quote:

Originally Posted by wolfe

For the 207M wheels, I believe the fronts are 10.13kg (22.3 lbs), and the rears are 10.16kg (22.4 lbs). The stock runflat tires are really heavy, presumably because the sidewalls are so tall and so thick.

I've just replaced my 207M's (and runflats) with some 18x8 and 18x9 wheels, with regular tires. I reduced unsprung weight by a little, but as far as I know it's not just the weight - it's how it's distributed from the center of the hub.

I would say mine 'feel' about the same weight on the car, or perhaps a fraction heavier. The extra grip should be amazing though. With something as light as you're going with, I'm sure that won't be an issue at all.

^^+1. Wolf's info looks correct. You can look up any BMW OE wheel here...

http://felgenkatalog.auto-treff.com/

128_Pilot · 12-05-2011, 12:11 PM

Thanks wolfe & Dackelone, you guys are great!

e46monk3y · 12-05-2011, 12:24 PM

Front - 10,13kg's
Rears - 10,16kg's

John_01 · 12-06-2011, 11:57 PM

I wouldn't trust the weights from BMW official figures. Generally BMW wheels are heavier than stated in the parts catalogue.

12-05-2011, 10:17 AM	#1
128_Pilot Wholesale Rep for The Tire Rack 7 Rep 48 Posts Drives: 2012 128i M Sport Join Date: Jul 2011 Location: State of Indiana iTrader: (0)	BMW 207M Wheel Weight? Hello all, Searching here I read once the OEM double spoke (Style 207M) alloy wheels in 17 x 7.0 front, 17 x 7.5 rear come in at 22.5lbs each. Can anyone confirm this? SIDE NOTE: The OE Goodyear's EMT 205/50-17 & 225/45-17 come in at 26.0lbs each. That's 48.5lbs per corner of unsprung weight. Replacing the wheels with ARC-8's in 18x8.5" sq that weigh 18.1lbs and the 245/35-18 Michelin PSS (new sku for them spring of 2012) which might weigh in at 22lbs each. Savings in unsprung weight would be 8.4lbs per corner.
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12-05-2011, 10:29 AM	#2
wolfe Captain 134 Rep 613 Posts Drives: e82 / e70 / r56 / r60 Join Date: Apr 2010 Location: USA iTrader: (1)	For the 207M wheels, I believe the fronts are 10.13kg (22.3 lbs), and the rears are 10.16kg (22.4 lbs). The stock runflat tires are really heavy, presumably because the sidewalls are so tall and so thick. I've just replaced my 207M's (and runflats) with some 18x8 and 18x9 wheels, with regular tires. I reduced unsprung weight by a little, but as far as I know it's not just the weight - it's how it's distributed from the center of the hub. I would say mine 'feel' about the same weight on the car, or perhaps a fraction heavier. The extra grip should be amazing though. With something as light as you're going with, I'm sure that won't be an issue at all.
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12-05-2011, 11:06 AM	#3
szcyxzh First Lieutenant 19 Rep 399 Posts Drives: 128I Join Date: Jul 2011 Location: Orlando, FL iTrader: (2)	I keep the 207M with a set of Conti DWS. Will replace prob four years later. Not bad looking and not bad function.
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12-05-2011, 12:11 PM	#5
128_Pilot Wholesale Rep for The Tire Rack 7 Rep 48 Posts Drives: 2012 128i M Sport Join Date: Jul 2011 Location: State of Indiana iTrader: (0)	Thanks wolfe & Dackelone, you guys are great!
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12-05-2011, 12:24 PM	#6
e46monk3y Enlisted Member 0 Rep 34 Posts Drives: e82 125i Join Date: Dec 2009 Location: Johannesburg South Africa iTrader: (0)	Front - 10,13kg's Rears - 10,16kg's
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12-06-2011, 11:57 PM	#7
John_01 Colonel 232 Rep 2,643 Posts Drives: E90 325i, E82 135i Join Date: Mar 2009 Location: Sydney, Australia iTrader: (0)	I wouldn't trust the weights from BMW official figures. Generally BMW wheels are heavier than stated in the parts catalogue.
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