Weapon F

I think this comes down to two things First, like everyone here has stated your Tires? check the state of wear and if they need to be replaced then do so with quality tires such as Michelin PSS, Conti, DW, etc what ever your budget allows.

And the second thing is learn how to properly launch and drive your car practice makes perfect. 13.5 @109 were same times I was running when I had my ISx50 with factory rubber at English Town. I averaged between 13.4 to 13.5's consistently with my old IS350 running F sport spring,F sport sway bar, F sport exhaust. The biggest mod you can do is to yourself, learning how to exact the most performance out of your F by practicing launching, braking, learning proper line etc. Take course,get some track time these thing will lead to biggest gains you can see with your car.

Just F Me

Uhhhhhhhhh....from my understanding, it has something to due with the fact that since 2008/2009 models have an open diff with reliance on electronics opposed to a LSD.

Torque is transferred to the wheel that has the least resistance, which is actually the wheel that is spinning. One wheel is spinning, one is not, therefore it causes the fish tail because the power is being shifted from one side to the other. LSD will prevent some of this and allow the torque to go to both wheels, but won't allow one wheel to receive 100% of the power. Especially if maybe traction control is off.

Not sure how much of that is right...I just tried to use what I did know or thought I knew to come up with something...LOL.

chrisp1

for the record the suspension changes and torsen lsd started in the 2011+ models. One of the reasons I bought a 2011

MK4Sup_isF

iTrader: (10)

Those changes were on the 2010. 11+ got the new cluster and led headlights

chrisp1

see the enclosed article by car and driver under the section a thorough revamp. They talk about how the suspension totally changed and the torsen lsd replace the open diff


http://www.caranddriver.com/reviews/...ad-test-review

Rossi

iTrader: (4)

2010 is the first model year with mechanical LSD,
2011+ suspension, steering was revised.
2013 more suspension tweaking.

MK4Sup_isF

iTrader: (10)

You were right about the suspension revamp on 2011 but 2010 were the first year of torsen LSD
http://www.motortrend.com/cars/2010/...uspension.html

chrisp1

this may be a dumb question but why does every article list 2010 as just mechanical limited slip but not torsen, and the 2011 is always listed as a torsen limited slip

Just F Me

Again...you're wrong.... LSD was added in 2010 models.

You must be the type that shoots first and asks questions later.

2012 and 2011 LED DRL headlights are different too. 2012 uses a whiter LED

Lets have Lobuxracer chime in on this...he has access to Toyota Factory manuals and he can post up the differences between the years. Joe Z might have access to this information as well.

chrisp1

this article may clear things up
http://blog.caranddriver.com/lexus-i...eels-for-2010/

chrisp1

I guess im the type that believes what the pros write in car magazines I could definitely be wrong, im just going by what im reading.The article below from car and driver must be wrong or a typo then. It says the torsen limited slip replaced 2010s open differential setup. http://www.caranddriver.com/reviews/...ad-test-review

Rossi

iTrader: (4)

Yes, you are wrong ..... The mechanical LSD added to 2010 model year was noted in every car magazine

The only reason I opted out of 2008/2009 model.

More pros writing bellow....
http://www.edmunds.com/lexus/is-f/2010/

chrisp1

Car and Driver obviously has it wrong. Kind of surprising they would miss a simple piece of info like that

MRxSLAYx

The question was rhetorical as its not going to happen lol. An open differential car is not going to fishtail while spinning unless the driver wants it to. Your understanding of how differentials work is somewhat alright, but its a bit off...

Open differentials send equal amounts of torque to both tires, usually resulting in situations known as "Single Tire Fire". Keep in mind, Single Tire Fire = No Fishtail. Getting both tires to lose traction is more difficult with an open differential because torque is not transferred from side to side as resistances change.

At the end of the day, the traction issues with this car seem to be tire related. Available data on the ISF platform shows no advantage to the 2010+ LSD in relation to straight line traction. In actually, the eLSD cars have constantly put down better 60' times



C&D never get it wrong. I mean they were spot on when they said the e90 M3 was superior to the R35 GTR right

chrisp1

just checked out a few of your videos....dang that car is quick