|
|
|
09-15-2007, 07:13 PM | #1 |
Private
1
Rep 91
Posts |
130 lbs
130 lbs. That is the difference between the published weights of the 335i coupe and the upcoming 135i coupe. Given this weight difference, and assuming that the engines are tuned the same and that the power is delivered similarly etc., does anyone out there know of a "formula" that will reliably predict the 135i's acceleration advantage? Btw, I didn't think the 135 would be so close in weight to the 335!
|
09-15-2007, 11:42 PM | #3 |
New Member
0
Rep 15
Posts |
With a published curb weight of 3196 (not sure how accurate this is, but check the link http://www.businessweek.com/autos/co...164_page_2.htm)
and assuming a 4.8 0-60 from the 335i I got a 0-60 time of 4.3s. That is also using a curb weight of 3571 for the 335i. To be honest I'm not sure how accurate this formula is because based on the 1/4 mile time of 13.3s for the 335i I'm getting 11.9s for the 135i. How sick would that be?
__________________
[SIGPIC][/SIGPIC]
|
Appreciate
0
|
09-16-2007, 12:21 AM | #4 | |
Major General
414
Rep 6,968
Posts |
Quote:
335i ~ 1600kg 135i ~ 1560kg.
__________________
- There's nothing in my pocket other than knives and lint
|
|
Appreciate
0
|
09-16-2007, 01:49 AM | #5 |
Enlisted Member
8
Rep 31
Posts |
The weight difference is negligible. Expect the 0-60 and 1/4 mile time to be nearly the same. The slight weight advantage the 135i has will be offset by the de-tune to the engine. There is no official information that there will be a de-tune, but we have seen undercarriage pictures which seem to show a more restrictive exhaust. However, caring about how quick the car is in a straight line compared to its big brother is missing the point. The 135i is a tighter package. With better brakes, smaller dimensions, slightly less weight, and a marketing comparison to the original 2002, expect the 135i to FEEL faster. If that electronic differential works out it WILL be faster at least in the corners. It will be about the driving FEEL. The 3 series has become a touring model, expect the 1 to have a responsiveness we haven't seen in a few generations aside from the M's. I've owned a few front-engine RWD cars and I'll tell you that my Miata felt faster than my E36 328is. That says something considering the Miata was actually a full second slower to 60. The 1 will be about the drive, not about the numbers. The only number you need to care about is the price, and you'll probably even stop worrying about that once you get behind the wheel.
__________________
[SIGPIC][/SIGPIC]
|
Appreciate
0
|
09-16-2007, 02:15 AM | #6 |
Major General
414
Rep 6,968
Posts |
That is good news if the sole hinderance to the engine's full potential is the exhaust. I wonder how accurate is BW's figure on the weight of the car. While the weight difference should be negligible in acceleration, I am sure it will make a difference in terms of driving experience. I can always feel the weight of an additional passenger.
__________________
- There's nothing in my pocket other than knives and lint
|
Appreciate
0
|
09-16-2007, 03:25 AM | #7 |
1addict, and proud
0
Rep 57
Posts |
I think you'll be able to feel a very slight difference in acceleration. I can always tell when I bring one or more passengers that my car is "lugging" more weight around. As for 0-60 and 1/4 times, negligible. MAYBE 1/10th of a second.
|
Appreciate
0
|
09-16-2007, 03:25 AM | #8 |
Colonel
94
Rep 2,012
Posts |
from what i know, an estimate of weight to 1/4 time is every 100 lbs off a vehicle will shave the vehicle's time by .1 seconds in the 1/4. Oh, and the miata is a car that makes u feel fast because it's so low to the ground, and there's not much sound deadening. Therefore it feels a lot faster than the 328.
|
Appreciate
0
|
09-16-2007, 04:16 AM | #9 | |
Private
2
Rep 82
Posts |
Quote:
|
|
Appreciate
0
|
09-16-2007, 06:59 AM | #10 | |
Private
1
Rep 91
Posts |
Quote:
And I got the 135i unladen weight from the "Technical Spec Sheet" that is posted in the sticky thread above - - 1,560 kg * 2.2046 lbs/kg = 3,439 lbs unladen weight. So, unless I am making a mistake somewhere, the difference is 3,571 - 3,439 = 132 lbs. |
|
Appreciate
0
|
09-16-2007, 07:20 AM | #11 | |
Private
1
Rep 91
Posts |
Quote:
|
|
Appreciate
0
|
09-16-2007, 09:37 AM | #12 | |
Major
36
Rep 1,329
Posts |
Quote:
|
|
Appreciate
0
|
09-16-2007, 11:48 AM | #13 | |
Lieutenant
17
Rep 524
Posts |
Quote:
Take a look at this link which shows the improvement brought from adding a real LSD to the Porsche Cayman S which also comes stock with only an E-LSD and has more inherent traction than the 135i, due to its mid-engine (135i should benefit even more from a real LSD): http://www.caymanclub.net/cayman-cha...ck-report.html
__________________
1973 Porsche Carrera RS 2.7 Carbon Fiber (240hp & 1,890 lbs)
|
|
Appreciate
0
|
09-16-2007, 02:53 PM | #14 | |
Major
36
Rep 1,329
Posts |
Quote:
I'll be putting a real LSD in mine as soon as I can or as soon as it's available |
|
Appreciate
0
|
09-16-2007, 02:59 PM | #15 |
Lieutenant Colonel
37
Rep 1,680
Posts |
|
Appreciate
0
|
09-16-2007, 03:33 PM | #16 | |
Lieutenant General
2146
Rep 10,176
Posts |
Quote:
With NOBODY having experience with this exact diff, I'm waiting before committing $$'s. I'm hoping to be pleasantly surprised. might not happen, but who knows? |
|
Appreciate
0
|
09-16-2007, 06:04 PM | #17 | |
Colonel
621
Rep 2,067
Posts |
Quote:
The big diff is that the weight on the 135i is lean muscle whereas on the 335i there is a little more fat .. |
|
Appreciate
0
|
09-16-2007, 07:07 PM | #18 |
First Lieutenant
11
Rep 394
Posts |
larryn--the reason he's bitching is because there's never been a good "e-lsd." They all suck.
135 will have more narrow tires than the 335, so traction will be a hindrance to 0-60. I suspect it will clock at the same as the 335. 1/4 it should be a tenth or two quicker. |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|