Weight Of Is Vs I - BMW Forum

Rooz · 03-09-2005, 09:12 PM

Hey, was just wondering how much more does a 328i weight vs a 328is?? Both e36 that is,.... any clue?

drz · 03-09-2005, 10:00 PM

328i sedan manual: 3120 lbs
328i sedan automatic: 3197 lbs
328is coupe manual: 3120 lbs
328is coupe automatic: 3197 lbs
328i convertible manual: 3362 lbs
328i convertible automatic: 3362 lbs

drz · 03-09-2005, 10:01 PM

Ready for operation, with full tank of fuel, options not included
Source: BMW

chr328is · 03-09-2005, 11:43 PM

I trust your sources and whatever, but I am soooo confused about the weight. How are the 2 doors the same weight/ slightly heavier than the 4 doors? Does it have to do with the cages of the car? or the? or...... I'm so confused

kyle_baker · 03-09-2005, 11:46 PM

Quote:

Originally posted by chr328is@Mar 9 2005, 11:43 PM
I trust your sources and whatever, but I am soooo confused about the weight. How are the 2 doors the same weight/ slightly heavier than the 4 doors? Does it have to do with the cages of the car? or the? or...... I'm so confused

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yes i've been wondering the same thing chr328is, i cannot figure out what exactly makes the weight differences between the two, lol, other thant he obvious (2 dr. vs. 4 dr.), but i'm sure there is more than that, or maybe there isn't, lol, not really sure after all.

Deloriant · 03-10-2005, 01:13 AM

They aren't the same weight...that is misquoted..

Furious · 03-10-2005, 08:48 AM

deloriant where did you get your source from? and what is the proper weight?

im curious too, i was always under the impression (with no factual evidence to back it uP) that the 4 door was heavier but more ridged for better handling.

CiscoKid · 03-10-2005, 09:25 AM

Quote:

Originally posted by drz328i@Mar 9 2005, 10:01 PM
Ready for operation, with full tank of fuel, options not included
Source: BMW

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Deloriant · 03-10-2005, 09:28 AM

To be honest I don't have a source on hand...I remember reading it though...and common sense says they wouldn't weight the same...

drz · 03-10-2005, 09:48 AM

Common sense says the same to me, but BMWs manual says they weigh the same. I will look around a little bit more. I am just regusrgitating information here.

drz · 03-10-2005, 09:53 AM

According to consumerguide.com, the 'is' and 'i' weigh the same. I will chack tonight on my Bentley's manual.

thekid · 03-10-2005, 10:40 AM

It is quite common for 2 door models to weigh more. For instance the mid 90's Subarau Imprezza's. For auto-x you would think a two door model would be desireable. But no, the 2 dr model weighes in more. I believe that the difference was only 90 lbs or so.

But any way as to why this would be the case. It seems to me that doors would be stiffer than say a fender. Why? Because the door has stuff in it and is built to be pretty stiff. Also doors are made to take full side impacts and are the only things protecting you in such cases. The back half (behind the front... err doors) is bascially by it's self a large rear fender. They have to make up the rigidity of the body some how. I would imagine because of the body of the car it would take quite a bit to make one large fender as safe as a door and as ridgid because of the saftey things required by the door.

4evrwyntr · 03-10-2005, 11:03 AM

weight for the convertible may be due to the different engine (I'm not sure, but I think somewhere between the years of the e36 weren't the convertibles running older engines that the sedans/coupes) as well as the mechanics involved in the convertible top. More machinery = more weight.

4evrwyntr · 03-10-2005, 11:09 AM

Quote:

Originally posted by thekid@Mar 10 2005, 11:40 AM
It is quite common for 2 door models to weigh more. For instance the mid 90's Subarau Imprezza's. For auto-x you would think a two door model would be desireable. But no, the 2 dr model weighes in more. I believe that the difference was only 90 lbs or so.

But any way as to why this would be the case. It seems to me that doors would be stiffer than say a fender. Why? Because the door has stuff in it and is built to be pretty stiff. Also doors are made to take full side impacts and are the only things protecting you in such cases. The back half (behind the front... err doors) is bascially by it's self a large rear fender. They have to make up the rigidity of the body some how. I would imagine because of the body of the car it would take quite a bit to make one large fender as safe as a door and as ridgid because of the saftey things required by the door.

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Did not know that - that was very informative.
Also, note to my previous statement; about the engine, that was just speculation. I would not be surprised if that were quite far from the mark. As for the mechanics involved in making a convertible top ... well, convertible, I'm pretty sure that all that extra machinery will add to the weight of the car - as well as needing more reinforcement a la thekid's explanation of rigidity adding to the weight.

mrkbik · 03-10-2005, 12:17 PM

msn autos also say that the i and is weigh the same.