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04-04-2007, 01:10 PM | #1 |
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Weight and power to weight ratio
OK looks like we have a winner 3483 lb curb weight (btw my guess back in 11/06 was 3500 even ). I sure hope the number is solid. IMO this is a fantastic achievement. The 335i weighs in at 3571 this is almost 100 lb lighter!! This is a huge achievement given the things that add weight to the vehicle relative to 335i: chassis stiffening, engine, clutch, rotors/calipers, tires, cooling system, exhaust system, etc.
I think the list of weight savings items other than composite roof and body panels will look pretty darn impressive once we learn about all of the effort that went into this. Updating my lb/hp list we now have:
Last edited by swamp2; 04-05-2007 at 03:28 AM.. |
04-04-2007, 01:27 PM | #2 |
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2008 M3 Cab vs hard top handling?
Thanks Swamp. Excellent info as usual.
It makes me wonder what it will "feel" like to drive (adrenalin rush for sure at least I expect). Do you have any thoughts on the carbon topped cab that will be released a bit later? I have one now (2004 M3) and while it is a bit heavier etc. on the track it is still a joy (and a bit scary at times) to drive. Do you think the newM3 carbon roofed cabs will offer an improvement from the softtops re handling and weight? Given the extra cost of the cabs this is an important consideration. K. |
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04-04-2007, 01:42 PM | #3 | |
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Maybe I'm looking at something wrong, but I've got 8.66 for the Audi RS4 with 420hp and weighing 3,638lbs. |
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04-04-2007, 02:03 PM | #4 |
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You guys' math is off. How can the RS4 have a better ratio than the M3? Assuming both are rated at 420hp, how can the heavier Audi have a better number? Even if the M3 is rated at 414hp, the Audi's extra 6hp can't possibly offset 155lbs of extra weight, can it?
My calculation using the industry standard horsepower per ton: M3 - 265hp/ton RS4 - 254hp/ton |
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04-04-2007, 02:05 PM | #5 |
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Not with the extra 50 lbs that silly thing will weigh. And you 'boys' better hope for a F430-esque launch control to boot if you plan on getting out on a 6-speed car.
But yeah, I like the weight. |
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04-04-2007, 02:06 PM | #6 | |
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I just divided weight by horsepower. In my calculations, the M3 still has a better ratio, but my RS4 numbers were different than Swamp's. |
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04-04-2007, 09:02 PM | #13 |
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Well, the RS4 ran a 12.8 @ 109.7 in 8/06 Road & Track with a curb weight of 3920 and 420 HP. The E92 will supposedly weight 442 lbs less with the same power. 12.5 sec źmile is my guess.
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04-04-2007, 10:49 PM | #14 |
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1/4 mile
I agree, 12.5 at, say, 110-112.
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04-04-2007, 11:00 PM | #15 |
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Some of you guys are reading the power to weight ratio backwards. The lower the number the better. It is really a listing of lbs per hp. Less lbs the better. Which is why the plastic car is listed as the best.
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04-05-2007, 12:45 AM | #16 |
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Yep, he is listing pounds per HP not the other way around. If it was HP per pounds then you would get fractions of HP..DUH!
To but it simply for you idiots (sorry I had a bad day), the smaller the number the better......!!!!!!!! Jason
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04-05-2007, 01:20 AM | #17 | |
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It doesn't matter how big or small the number is, you put the BEST number on top when making a list like this. Do you go to the bottom of a list to find the best lap time? I personally have nothing against the OP, just trying to point out an error. Calling us idiots because we don't think the same way the OP does on this subject (which is neither scientific nor logical) speaks volumes about yourself. |
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04-05-2007, 02:02 AM | #18 |
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Both are equally valid and I have seen both used in a lot of places. As long at the units are listed beside the number there should be no confusion.
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04-05-2007, 03:26 AM | #19 | |
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Clarifications
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BTW, all of this should have been pretty obvious. It doesn´t make anyone an idiot but you should be familiar with numbers of about 10 lb/hp. |
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04-05-2007, 05:14 AM | #20 | |
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remind me again, how far apart are the 'b' and 'p' keys on the keyboard?
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04-05-2007, 06:02 AM | #21 |
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swamp, i'm curious... where did you get the 3483 lb curb weight figure from? i must be missing something, because i haven't seen it in any of the recent posts.
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04-05-2007, 06:24 AM | #22 |
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The weight is real. Actually, can't believe you haven't seen it.
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