550 vs. 545....
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dont forget that torque is what make the car have lower 0-60 times. its a matter of how much torque/lb at what rpm. the motor with the better ratio earlier in the rpm band will record the better time.
horse power is just torque with prms for good measure. look at the honda with 155 ft-lb torque and 210ph at 9000 rpm. the 0-60 time is slow.
horse power is just torque with prms for good measure. look at the honda with 155 ft-lb torque and 210ph at 9000 rpm. the 0-60 time is slow.
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Originally Posted by merklebob' post='204829' date='Nov 29 2005, 02:45 PM
dont forget that torque is what make the car have lower 0-60 times. its a matter of how much torque/lb at what rpm. the motor with the better ratio earlier in the rpm band will record the better time.
horse power is just torque with prms for good measure. look at the honda with 155 ft-lb torque and 210ph at 9000 rpm. the 0-60 time is slow.
horse power is just torque with prms for good measure. look at the honda with 155 ft-lb torque and 210ph at 9000 rpm. the 0-60 time is slow.
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Originally Posted by merklebob' post='204829' date='Nov 29 2005, 11:45 AM
dont forget that torque is what make the car have lower 0-60 times. its a matter of how much torque/lb at what rpm. the motor with the better ratio earlier in the rpm band will record the better time.
horse power is just torque with prms for good measure. look at the honda with 155 ft-lb torque and 210ph at 9000 rpm. the 0-60 time is slow.
horse power is just torque with prms for good measure. look at the honda with 155 ft-lb torque and 210ph at 9000 rpm. the 0-60 time is slow.
#24
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dont forget that torque is what make the car have lower 0-60 times. its a matter of how much torque/lb at what rpm. the motor with the better ratio earlier in the rpm band will record the better time.
horse power is just torque with prms for good measure. look at the honda with 155 ft-lb torque and 210ph at 9000 rpm. the 0-60 time is slow.
horse power is just torque with prms for good measure. look at the honda with 155 ft-lb torque and 210ph at 9000 rpm. the 0-60 time is slow.
[/quote]
Right. I always thought of it this way. Torque gets you going and is useful in lower rpms, horsepower keeps you going especially in upper RPMs. Both are needed for a great 0-60 time. The Mazda cars must be in the upper RPM ranges at all times in every gear in order to turn in a good 0-60 time.
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Originally Posted by fishskis' post='204523' date='Nov 28 2005, 08:58 PM
Thanks for the replies, but to be honest, that is not what I was looking for. I have done the math too. Numbers can be misleading; for example my e46 M3 convertible smg has very similar acceleration and handling numbers as my 545, but they are very different cars.
I am interested in how the FEEL of the two cars compares. Is there anybody out there who has driven both (for more than a test-drive)?
Thanks.
I am interested in how the FEEL of the two cars compares. Is there anybody out there who has driven both (for more than a test-drive)?
Thanks.
First Impressions. 550i feels like it has alot more HP than the 545i. Because the 550i is at 450 miles on the odo, I haven't even brought it above 4500rpm. Seat of the pants feels like the torque and responsiveness is much great than 35hp. and 30 FT LBS Torque. The wife even complemented on how much peppier the 550i felt, than her car. After driving the 545i, I am thinking something is wrong with it, as it seems down on power. I am sure it is all in my head and butt o meter. The torque seems to come on stronger and quicker in the 550i. I am also sure that is what an extra 400cc of displacement will do.
The other thing I noticed is the 545i is smoother on the downshifts and doesn't have any drag on the transmission when I let off the gas. The 550i, has a bit of a weird drag when I let off the gas and has an extra little kick in the 2nd to 1st downshift. This may have to do with the disc cleaning features and the pre load of the master cylinder for emergency stopping. Not bothersome, just different.
I do have a friend with a dyno, so I am going to get both cars dynoed and see what the real HP numbers are and what the differences really are.
I will keep all informed. I will eventually get both to a drag strip as well for some 1/4 mile times, but not until next spring.
Regards, Mike.
#26
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The other thing I noticed is the 545i is smoother on the downshifts and doesn't have any drag on the transmission when I let off the gas. The 550i, has a bit of a weird drag when I let off the gas and has an extra little kick in the 2nd to 1st downshift. This may have to do with the disc cleaning features and the pre load of the master cylinder for emergency stopping. Not bothersome, just different.
Regards, Mike.
[/quote]
Hi Mike,
Someone was also complaining about this same "drag" on his 550i when the gas pedal was let off awhile back. (I can't find the post anymore). Was that you?
I ask because the issue's "irritating factor" might be high if 2 owners mentioned it already.
(Thinking of 550i for my wife.)
Thanks for the report.
Regards,
Can
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Originally Posted by merklebob' post='204829' date='Nov 29 2005, 11:45 AM
dont forget that torque is what make the car have lower 0-60 times. its a matter of how much torque/lb at what rpm. the motor with the better ratio earlier in the rpm band will record the better time.
horse power is just torque with prms for good measure. look at the honda with 155 ft-lb torque and 210ph at 9000 rpm. the 0-60 time is slow.
horse power is just torque with prms for good measure. look at the honda with 155 ft-lb torque and 210ph at 9000 rpm. the 0-60 time is slow.
Right. I always thought of it this way. Torque gets you going and is useful in lower rpms, horsepower keeps you going especially in upper RPMs. Both are needed for a great 0-60 time. The Mazda cars must be in the upper RPM ranges at all times in every gear in order to turn in a good 0-60 time.
[/quote]
But, that's true for every car if it is going to run its best times. But, it's not true because engine torque is kept especially high using the procedure. It's because road torque is kept especially high.
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Originally Posted by Bimmer32' post='204580' date='Nov 29 2005, 12:17 AM
[quote name='Jeffs' post='204534' date='Nov 28 2005, 09:19 PM']
0-60 in 4.91 sec??? No way....that'll be way too fast and unrealistic IMO....
0-60 in 4.91 sec??? No way....that'll be way too fast and unrealistic IMO....
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This is a different experience. I had the M3 for 3 years and wanted a change of venue (and color), and this car so far is not a dissappoitment.
[/quote]
So Darkside, do you have the SMG on the new 550?
[/quote]
No, I have Steptronic. I had the SMGII in my e46 M3.
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Originally Posted by fishskis' post='204523' date='Nov 28 2005, 08:58 PM
Thanks for the replies, b
The other thing I noticed is the 545i is smoother on the downshifts and doesn't have any drag on the transmission when I let off the gas. The 550i, has a bit of a weird drag when I let off the gas and has an extra little kick in the 2nd to 1st downshift. This may have to do with the disc cleaning features and the pre load of the master cylinder for emergency stopping. Not bothersome, just different.
Regards, Mike.
Someone was also complaining about this same "drag" on his 550i when the gas pedal was let off awhile back. (I can't find the post anymore). Was that you?
I ask because the issue's "irritating factor" might be high if 2 owners mentioned it already.
(Thinking of 550i for my wife.)
Thanks for the report.
Regards,
Can
[/quote]
Can, it wasn't me on the original drag factor, and I do remember someone else mentioning it. I am going to have to drive the cars in true, back to back sessions to be sure about it. I just haven't had the time to do so.
I still wouldn't hesitate in buying the 550i, again. I did look at a 2006 911, but if I went with the Porsche, I would go with the Carrera S, model, and by the time I optioned it out, it was over 95K. A bit out of my budget. Congrats on your 911. I love Guards Red and the 911 is a great sports car!
Regards, Mike.
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Originally Posted by fishskis' post='204523' date='Nov 28 2005, 08:58 PM
Thanks for the replies, b
The other thing I noticed is the 545i is smoother on the downshifts and doesn't have any drag on the transmission when I let off the gas. The 550i, has a bit of a weird drag when I let off the gas and has an extra little kick in the 2nd to 1st downshift. This may have to do with the disc cleaning features and the pre load of the master cylinder for emergency stopping. Not bothersome, just different.
Regards, Mike.
Someone was also complaining about this same "drag" on his 550i when the gas pedal was let off awhile back. (I can't find the post anymore). Was that you?
I ask because the issue's "irritating factor" might be high if 2 owners mentioned it already.
(Thinking of 550i for my wife.)
Thanks for the report.
Regards,
Can
[/quote]
I had the same drag in the early SW versions with my 545. It got a lot better with SW upgrades.