ToothDoc

Oh, I forgot to mention, my car weighed in at 3523 pounds (before my butt got in it) at those 3.9 second times of which 60 pounds of reduction were from Fig's 2 pc rotors and Volk rims. These are hard numbers verified again and again year after year using VBOX and I have my own auto scales too. At that trim, I was doing 1.83 second 60 footers and that's when I finally broke into the 11.9xx ET.

FBO, you can definitely count on 4.2 even with full weight and summer weather.... but only with traction. Having 45% of the weight over the rear tires isn't really conducive to great launches.

I8ABMR

Damn, ToothDoc I am impressed. Very very cool. I am an eye doc by the way

MYISF

Interesting...didn't Motor Trend or someone clock 4.2 in the ISF back in 2008 or 2009? And did they do everything u r talking about? No spare, little gas in the tank, lighter wheels, etc...I doubt it but could be wrong...they may have ran it on less fuel and took out the spare but I assume the rest of the car was stock...and might I add with a professional driver. What amount of time is that worth? Not saying u can't drive. SO I say all of this not to disbute your results as I am sure they are what u say they are but if they can get 4.2 totally stock then I would think my car (which I have not weighed it but think it is around stock weight...loss weight due to H/E but gained it back with 20in wheels???) should be in that area and maybe a little less...I tell people low 4's when asked because depending on the conditions (weight, fuel amount, temperature, traction, etc...) I would think with I/H/E I am anywhere around 4.4 - 3.9...???

PS And don't even get me started with not every car is built and performs the same...remember the old saying of "Don't buy a car that is built on a Monday or a Friday"...I sure hope mine was built on a Wednesday...LOL

ToothDoc

Motortrend does a 1 foot rollout so their 4.2 is actually a 4.4. Also, they compensate for DA. They get their runs and then they correct it for DA.

It doesn't take a professional driver on an IS-F to go in a straight line. Just traction and changing the gears ONCE lol

vbb

iTrader: (3)

0-60 time is one of the classic ways of measuring a car's performance, but with all of the sports cars coming out these days with AWD and launch control, it really doesn't tell the whole tale. As so many have pointed out, the number is largely skewed by traction, or the lack thereof. In my opinion the better numbers are the roll on acceleration numbers 20-100mph, 60-80mph, etc. That will show how quick a car is without messing with the traction variable.

I mean, the Audi TTRS is throwing down 0-60 times in the mid 3 second range (3.5-3.6). Would anyone actually claim that car is as fast as some of the supercars that have similar times? No.

ToothDoc

trap speed and weight is a good way to measure horsepower. Most dragstrips are relatively flat. I don't trust 60-130 numbers because people who know how to play it, play the system (uphill in the beginning, downhill at the end, slope, etc.).

In the end, a 3600 pound car trapping about 120-121 (caymandive) is a good indication of good horsepower.

MYISF

Good to know...thanks

I hear you...just thought I would throw that out there...and I agree with paddle shifters and automatics that there is not much to do like if you had a 6 speed...I once took a guy for a ride in my 350Z (NISMO N/A mods) and then he went for a ride in a guys twin turbo 350Z (rigth after the ride with me) and later told me I could beat him...he said the guy did not know how to drive like I did...LOL In my ISF I actually like manual shifting with the stick as I don't really like the hand positions of the paddle shifters...maybe just somehting I need to get use to?

DaLurker

I think it shifts faster in Auto personally...

Stuno1

Up shift in 1/10th of a second. Hard to believe person could match that. Just depends when you want it to shift.

VtotheJ

iTrader: (2)

Best times are achieved by using Manual + Sport mode and bouncing off the rev limiter. Auto mode doesn't allow you to achieve that extra 500 or so RPM's.

I8ABMR

just listen for the beep and hit the paddle