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BMW Suspension... how does BMW do it?

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Old Jun 9, 2005 | 01:55 PM
  #41  
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Originally Posted by AcuraFanatic
1995 you ass
my bad

Originally Posted by 95SiR
it drives extremely well, but still feels like a japanese car though h: it doesnt have that "heavy weight" feeling h:
yeah, it's hard to describe it. i think it's because the steering feels too light
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Old Jun 9, 2005 | 02:08 PM
  #42  
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Originally Posted by rich
yeah, it's hard to describe it. i think it's because the steering feels too light
that and just everything. weird. hard to describe... kinda like how bmw has their own funkdafied bimmer cow leather smell :exnbp:
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Old Jun 9, 2005 | 02:16 PM
  #43  
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the car was built with handling and comfort in mind. Hence, weight balance, suspension geometry, spring rates and damping were all optimized.

Take a look at a civic... it was built with economy in mind. Its nose-heavy, loses suspension travel and ride comfort rapidly with lowering, it can't possibly fit stock-diameter tires wider than 215mm. There's only so much you can correct with aftermarket parts without seriously compromising comfort.
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Old Jun 9, 2005 | 02:17 PM
  #44  
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I think heavy car makes a difference. German cars are usually pretty heavy (Mercedes, Audi, BMW) and that weight does a lot for resisting road roughness. Big tires then on a heavy car (3400 lbs 3 series) won't be so jarring as on a 2600 lbs civic. Add the buttery smooth V6 and you don't notice the hunk of 3400 lbs you're toting around.

So do Germans over estimate their mpg? BMW says their 3 series sedan gets 21/29 mpg. Compared to a WRX subie, which says 20/27 on a 3100 lbs impreza. This doesn't sound right.
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Old Jun 9, 2005 | 02:19 PM
  #45  
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Originally Posted by chimchim
I think heavy car makes a difference. German cars are usually pretty heavy (Mercedes, Audi, BMW) and that weight does a lot for resisting road roughness. Big tires then on a heavy car (3400 lbs 3 series) won't be so jarring as on a 2600 lbs civic. Add the buttery smooth V6 and you don't notice the hunk of 3400 lbs you're toting around.

So do Germans over estimate their mpg? BMW says their 3 series sedan gets 21/29 mpg. Compared to a WRX subie, which says 20/27 on a 3100 lbs impreza. This doesn't sound right.
subaru's don't get very good milage because of their awd... i bet a 330xi gets worse than 21/29
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Old Jun 9, 2005 | 02:39 PM
  #46  
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Originally Posted by chimchim
I think heavy car makes a difference. German cars are usually pretty heavy (Mercedes, Audi, BMW) and that weight does a lot for resisting road roughness. Big tires then on a heavy car (3400 lbs 3 series) won't be so jarring as on a 2600 lbs civic. Add the buttery smooth V6 and you don't notice the hunk of 3400 lbs you're toting around.

So do Germans over estimate their mpg? BMW says their 3 series sedan gets 21/29 mpg. Compared to a WRX subie, which says 20/27 on a 3100 lbs impreza. This doesn't sound right.
its an i6 in the bmw btw.
and like he said, awd kills gas mileage. my local street mileage sucks ass at avg 15-17mpg
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Old Jun 9, 2005 | 02:40 PM
  #47  
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Originally Posted by chimchim
I think heavy car makes a difference. German cars are usually pretty heavy (Mercedes, Audi, BMW) and that weight does a lot for resisting road roughness. Big tires then on a heavy car (3400 lbs 3 series) won't be so jarring as on a 2600 lbs civic. Add the buttery smooth V6 and you don't notice the hunk of 3400 lbs you're toting around.

So do Germans over estimate their mpg? BMW says their 3 series sedan gets 21/29 mpg. Compared to a WRX subie, which says 20/27 on a 3100 lbs impreza. This doesn't sound right.
i believe the fuel economy numbers are only estimates - not actual measurements based on experiments or controlled tests - and are supplied by the EPA, not the manufacturers.

edit: http://www.msnbc.msn.com/id/7128017/
i'm trying to find the article that discusses exactly how they come up with the estimates.... it looks like they are tests conducted by manufacturers, but they follow the EPA's requirements for testing. they're done in a lab on a dyno, under controlled conditions, and don't represent real world conditions whatsoever. i think in this case, an AWD or heavy car's mileage estimate could easily look much better on paper than in reality
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Old Jun 9, 2005 | 02:53 PM
  #48  
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http://www.macon.com/mld/macon/news/...n/11781243.htm
It involves putting a car on a dynamometer - a sort of treadmill for autos - with its engine going. The dynamometer is set to simulate a 10-mile open-highway drive at an average 48 mph and then a simulated city drive of 11 miles with 23 stops, at an average 20 mph.

The waste substances emitted are measured, not the actual fuel use - it is extrapolated from the amount of waste given off. These ideal-situation, indirectly-measured lab tests, failed to represent real driving conditions and habits 30 years ago
so the EPA fuel economy numbers aren't even measured by the amount of fuel being consumed.......
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Old Jun 9, 2005 | 03:06 PM
  #49  
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Originally Posted by 95SiR
its an i6 in the bmw btw.
and like he said, awd kills gas mileage. my local street mileage sucks ass at avg 15-17mpg
Whoops... you're right. Inline, not V. My bad.

And :doh: what am I thinking... AWD of course. Brain fart.
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Old Jun 9, 2005 | 03:46 PM
  #50  
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Originally Posted by 95SiR
it drives extremely well, but still feels like a japanese car though h: it doesnt have that "heavy weight" feeling h:
I've driven both an '06 330i 6-speed manual w/ sport package and a 2005 G35 automatic sedan recently, and I thought the bimmer felt more light on its feet.

The 330i was super nice, definitely nicer than the G35. The operative question being whether or not it's $7k nicer than the G35. The G35 was pretty alright itself, and had a bunch more power than the 330i (280 hp vs. 255 hp). The bimmer feels kinda high strung, and just like my Miata you need to keep the revs over 2 grand because it doesn't like being lugged. The G35 can cruise at 1200 rpm all day. But the 330i has the way better chassis.

Last edited by MrFatbooty; Jun 9, 2005 at 03:49 PM.
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