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IS F (2008-2014) Discussion topics related to the IS F model

ISF WEIGHT VS Speed

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Old 10-30-11, 08:20 PM
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lexuz125th
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Default ISF WEIGHT VS Speed
Guys have a quick question in terms of the weight of our cars affecting the performance. When changing exhaust systems, wheels, etc how much weight is added or lost? Also when putting people into the car how much of the 0-60 or the speed in general is lost, lets say a full car 800LBS
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Old 10-30-11, 08:29 PM
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MRxSLAYx
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My 300lb friend puts me back about 2.5-3 cars from a 40-140mph roll
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Old 10-30-11, 08:41 PM
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Originally Posted by MRxSLAYx
My 300lb friend puts me back about 2.5-3 cars from a 40-140mph roll
Wow, that's a big performance loss! How does he fit in the seats?
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Old 10-30-11, 10:22 PM
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Old 10-30-11, 10:37 PM
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Originally Posted by lexuz125th
Guys have a quick question in terms of the weight of our cars affecting the performance. When changing exhaust systems, wheels, etc how much weight is added or lost? Also when putting people into the car how much of the 0-60 or the speed in general is lost, lets say a full car 800LBS
try this little app to get some estimates.

http://www.060calculator.com/
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Old 10-30-11, 11:03 PM
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Originally Posted by vraa
^ lol .. sorry but was not expecting that.. hillarious
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Old 10-30-11, 11:50 PM
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Originally Posted by vraa
LOL aww man
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Old 10-31-11, 04:42 AM
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MRxSLAYx
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Originally Posted by LexyISF
Wow, that's a big performance loss! How does he fit in the seats?
Fits just fine.
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Old 10-31-11, 06:39 AM
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Yea i'm still waiting for someone to start pulling weight from the car via seats and such just to see, heh
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Old 10-31-11, 10:02 AM
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Originally Posted by MicaISF
try this little app to get some estimates.

http://www.060calculator.com/
Good point. I was playing with this yesterday in regards to a tuned IS-F's numbers. I was surprised that using 440 flywheel HP at 3800 pounds, the 0-60 was in the mid 3.9's. When I subtractraced 50 pounds from the weight down to 3750, the 0-60 time actually went up to the high 3.9s. Maybe the loss of weight reduces the traction and the ability for the rear tires to hook up???
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Old 11-01-11, 12:30 PM
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it's only a guesstimate and definitely not ISF specific. I would not read too much into a few fraction of a second.
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Old 11-01-11, 02:46 PM
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Originally Posted by madastep
Yea i'm still waiting for someone to start pulling weight from the car via seats and such just to see, heh
I'll leave that for the Honda boys!
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Old 11-01-11, 04:05 PM
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Originally Posted by madastep
Yea i'm still waiting for someone to start pulling weight from the car via seats and such just to see, heh
Naw I'll never do that to my F. This is a sport luxury car not an evo. Why would you wanna take out the luxury in this car?
I love my heavy beast. She's plumpy, but she can still touch her toes!
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Old 11-01-11, 04:16 PM
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Originally Posted by DCoolBeans
Naw I'll never do that to my F. This is a sport luxury car not an evo. Why would you wanna take out the luxury in this car?
I love my heavy beast. She's plumpy, but she can still touch her toes!
hahaha
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Old 11-01-11, 07:26 PM
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Seat is extremely easy to remove, took me no more than 5 mins to get it out of the car.
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