Rear Differential Question - Limited Slip
#16
The ISF is supposed to be the direct competitor to the CTS-V, C63 AMG, and M3.
The F-Sport models supposed to compete with the V-Sport, M-Sport cars, and whatever XX-Sport other manufacturers are coming out with, but Lexus use the same engine as the regular model instead.
The F-Sport models supposed to compete with the V-Sport, M-Sport cars, and whatever XX-Sport other manufacturers are coming out with, but Lexus use the same engine as the regular model instead.
Neither the IS 350 F Sport nor the GS 350 F Sport come close to the CTS V Sport; not sure about those others.
#17
Nope, and Lexus didn't try to make a car to compete with those. If they had the cars would cost 30 and 20k more, and basically be on their competitors.
#19
Did you have traction control on or off on the track? I'm curious to know if the limited slip emulation still functions with the traction control system disabled.
#20
Since we are on the traction control issue, when I hold press the traction control button it says on the console "Trac Off" when i hold the button down for 5 seconds then a light with a picture of a car laying down some rubber shows up on the console. What is the difference of the two, what is it disabling on each step?
#21
I just wanted to clarify that the IS F-Sport also does not have a mechanical LSD. It utilizes an eLSD like the GS350 F-Sport (which is okay for the streets but less than desirable for the track). Besides the LFA, IS-F, and LS F-Sport, no other current Lexus US model has a mechanical LSD. The upcoming RC350 F-Sport and RC-F will also have mechanical LSDs.
Last edited by redspencer; 07-25-14 at 09:22 AM.
#22
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Since we are on the traction control issue, when I hold press the traction control button it says on the console "Trac Off" when i hold the button down for 5 seconds then a light with a picture of a car laying down some rubber shows up on the console. What is the difference of the two, what is it disabling on each step?
-Joe
#23
At autocross, I turn off the stability control system and the car spins the inside tire coming out of corners fairly easily. So I'd say with the stability system off, it does disable the 'LSD effect' (i.e. doesn't apply the brakes to the inside rear wheel when powering out of a corner).
I like the GS a lot, but it is still just a sporty street car, as opposed to a real track-capable car like the Cadillac. When the RC F debuts, hopefully we'll find out Lexus made it more like the CTS than the GS.
#24
shame on me for not checking the brake condition after every session--so it not only destroyed the pads, but also chewed up the rotors and destroyed the rubber piston sealing boots. Had I caught it sooner, it would have only meant a pad change.
At autocross, I turn off the stability control system and the car spins the inside tire coming out of corners fairly easily. So I'd say with the stability system off, it does disable the 'LSD effect' (i.e. doesn't apply the brakes to the inside rear wheel when powering out of a corner).
At autocross, I turn off the stability control system and the car spins the inside tire coming out of corners fairly easily. So I'd say with the stability system off, it does disable the 'LSD effect' (i.e. doesn't apply the brakes to the inside rear wheel when powering out of a corner).
Thanks for confirming the stability control eLSD link ... I suspected as much but have never been in a sustained max-effort situation to truly confirm in this car.
#25
TRAC OFF is just traction control, you can break the tires loose pretty much going straight, when it has the light that you are talking about illuminated it means that VSC is also disabled, which is what prevents you from losing stability like your back end from sliding out (if you wanted to go drifting in your car, you would need both off) if you wanted to do a burnout, you would only need the first step turned off. VSC stands for vehicle stability control. Also, if you have PCS, turning it completely off disables Pre-Crash Brakes.
-Joe
-Joe
To actually disable the system and have some fun you'll need to press and hold for the 10 for 15 seconds to fully disable the system.
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