Questions about weights
08-23-2005, 01:12 PM
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First question: why is the 545i at 3803 pounds so much heavier than the 530i at 3472? It doesn't seem like the bigger engine should weigh 325 pounds more.
Second question: why does the manual tranny only decrease the weight by 11 pounds on the 545i and 18 on the 530i? I was under the impression that an automatic was quite a bit heavier than a manual. Thanks, JJ.
Second question: why does the manual tranny only decrease the weight by 11 pounds on the 545i and 18 on the 530i? I was under the impression that an automatic was quite a bit heavier than a manual. Thanks, JJ.
08-23-2005, 02:08 PM
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The weight difference between the 545 and 530 is mostly due to the engine. This difference will allow the 530 to be more tossable around the corners.
If you compare the M5 to the 545, there is a number of differences, but again, the main difference in weight is due to the engine. I believe the M5 is upwards of 4000lbs.
Not sure about the 2nd question though.
If you compare the M5 to the 545, there is a number of differences, but again, the main difference in weight is due to the engine. I believe the M5 is upwards of 4000lbs.
Not sure about the 2nd question though.
08-23-2005, 02:12 PM
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Originally Posted by Jack Jones' date='Aug 23 2005, 04:12 PM
First question:? why is the 545i at 3803 pounds so much heavier than the 530i at 3472?? It doesn't seem like the bigger engine should weigh 325 pounds more.
Second question:? why does the manual tranny only decrease the weight by 11 pounds on the 545i and 18 on the 530i?? I was under the impression that an automatic was quite a bit heavier than a manual.? Thanks, JJ.
Second question:? why does the manual tranny only decrease the weight by 11 pounds on the 545i and 18 on the 530i?? I was under the impression that an automatic was quite a bit heavier than a manual.? Thanks, JJ.
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Also, I'd add the weight of stiffer springs, bigger brakes, bigger tires (esp sport)and more fluids capacities from coolants, oil, and etc.
08-23-2005, 02:15 PM
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Originally Posted by CVTBenhogan' date='Aug 23 2005, 03:12 PM
Also, I'd add the weight of stiffer springs, bigger brakes, bigger tires (esp sport)
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08-23-2005, 02:16 PM
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Originally Posted by heezy545i' date='Aug 23 2005, 05:15 PM
[quote name='CVTBenhogan' date='Aug 23 2005, 03:12 PM']Also, I'd add the weight of stiffer springs, bigger brakes, bigger tires (esp sport)
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[/quote]Yeah, the bigger rear tires on the 545i.
08-23-2005, 02:37 PM
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My Ride: 2006 BMW 550i "Ben Hogan's 5 Iron"
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Originally Posted by Jack Jones' date='Aug 23 2005, 04:12 PM
Second question:? why does the manual tranny only decrease the weight by 11 pounds on the 545i and 18 on the 530i?? I was under the impression that an automatic was quite a bit heavier than a manual.? Thanks, JJ.
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The gearbox is likely to be beefier in the 545 to handle the greater torque and power.
08-23-2005, 02:48 PM
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Originally Posted by heezy545i' date='Aug 23 2005, 04:08 PM
The weight difference between the 545 and 530 is mostly due to the engine.? This difference will allow the 530 to be more tossable around the corners.
If you compare the M5 to the 545, there is a number of differences, but again, the main difference in weight is due to the engine.? I believe the M5 is upwards of 4000lbs.
Not sure about the 2nd question though.
If you compare the M5 to the 545, there is a number of differences, but again, the main difference in weight is due to the engine.? I believe the M5 is upwards of 4000lbs.
Not sure about the 2nd question though.
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If you increase the engine torque, you need heavier clutch, transmission, driveshaft, differential, and axles. Now you need larger brakes to stop the heavier car, which adds weight, and now you need heavier springs, shocks and A-arms because the unsprung weight is heavier as well. You need heavier gage exhaust, more piping, extra converters... It all adds up pretty quickly.
08-23-2005, 02:57 PM
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Originally Posted by wolverine' date='Aug 23 2005, 03:48 PM
Actually, in both cars the engines are only marginally heavier.? The main difference is in the heavier drivetrains and suspension components necessary to withstand the added torque of the engine, and the higher speeds and heavier weights.? It's all additive.
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08-23-2005, 03:12 PM
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My Ride: 545i Mystic Blue/Black Leather Type 124 Wheels
The official weight difference between the 545i engine and the new 530i N52 engine isabout 66 pounds
The difference between the 2 auto transmissions is sbout 22 pounds
The first exhaust catalysts weight difference is about 9 pounds
So as you can see the differences start to add up
The difference between the 2 auto transmissions is sbout 22 pounds
The first exhaust catalysts weight difference is about 9 pounds
So as you can see the differences start to add up
