Installed RCF / GSF bushings..
01-28-20, 04:42 PM
#32
So 4 short months later....I have these installed. And paid to have it done while I was at work. Couldn't wait to find the time any longer while putting miles on my new tires.
(This is the kind of stuff that happens to me since having a newborn lol).
Immediate reactions.
there is a difference to be felt between 40-70mph but not much. However in sport mode the steering is definitely even stiffer than beforehand in sport mode. This was clear but nothing I'll ever notice again. I left it off sport mode the rest of the drive to better feel the difference since I usually am in Normal Drive mode.
Little more precise at 100mph while in light turns. More like I was on a rail than before. 100 while coming around the bend felt more like 80, 90? Not a huge difference here though dont let me overstate.
The biggest difference was with hard braking. From about 85-40 the car remained much more solid than before. Felt really good actually like THIS is how it's supposed to be.
Lastly on a slightly uneven/bumpy road the steering remained straight much more than it had before.
Im ok with the steering in the IS. I like that its not a completely numb feeling like some comparable makes....however just a tad more stiff like in sport mode I would like to have in normal mode. Was hoping to get more of that but all in all for the little change it was.....got good results.
But I also have to remember reason #1 is tire wear...hoping to save $100s down the line.
(This is the kind of stuff that happens to me since having a newborn lol).
Immediate reactions.
there is a difference to be felt between 40-70mph but not much. However in sport mode the steering is definitely even stiffer than beforehand in sport mode. This was clear but nothing I'll ever notice again. I left it off sport mode the rest of the drive to better feel the difference since I usually am in Normal Drive mode.
Little more precise at 100mph while in light turns. More like I was on a rail than before. 100 while coming around the bend felt more like 80, 90? Not a huge difference here though dont let me overstate.
The biggest difference was with hard braking. From about 85-40 the car remained much more solid than before. Felt really good actually like THIS is how it's supposed to be.
Lastly on a slightly uneven/bumpy road the steering remained straight much more than it had before.
Im ok with the steering in the IS. I like that its not a completely numb feeling like some comparable makes....however just a tad more stiff like in sport mode I would like to have in normal mode. Was hoping to get more of that but all in all for the little change it was.....got good results.
But I also have to remember reason #1 is tire wear...hoping to save $100s down the line.
The following users liked this post:
Jazzrock (01-28-20)
01-28-20, 04:49 PM
#33
I notice very little difference, but I've never gone 100 MPH in this car. 75 is what I like to stay at. I'm surprised you could go 100 in LA, if that's where you are. 
01-28-20, 06:58 PM
#34
100 isnt hard here/there without causing any hazard. Car is pretty quick from 75 to 100!
The difference is so subtle at the low speed.
The brakes were where it's at. I slammed on the brakes down towards 40mph or so and changed lanes to give the car a better chance to wander off a bit. Totally stable.
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Jazzrock (01-28-20)
01-29-20, 11:03 PM
#35
Former Sponsor
https://youtu.be/RWa3EDMvQXE
This has been previously posted somewhere. I showed my mechanic this video after he quoted 4 hours and he charged me $100 for the job. Its like 30-45 min.
This has been previously posted somewhere. I showed my mechanic this video after he quoted 4 hours and he charged me $100 for the job. Its like 30-45 min.
01-30-20, 09:20 PM
#36
Instructor
So 4 short months later....I have these installed. And paid to have it done while I was at work. Couldn't wait to find the time any longer while putting miles on my new tires.
(This is the kind of stuff that happens to me since having a newborn lol).
Immediate reactions.
there is a difference to be felt between 40-70mph but not much. However in sport mode the steering is definitely even stiffer than beforehand in sport mode. This was clear but nothing I'll ever notice again. I left it off sport mode the rest of the drive to better feel the difference since I usually am in Normal Drive mode.
Little more precise at 100mph while in light turns. More like I was on a rail than before. 100 while coming around the bend felt more like 80, 90? Not a huge difference here though dont let me overstate.
The biggest difference was with hard braking. From about 85-40 the car remained much more solid than before. Felt really good actually like THIS is how it's supposed to be.
Lastly on a slightly uneven/bumpy road the steering remained straight much more than it had before.
Im ok with the steering in the IS. I like that its not a completely numb feeling like some comparable makes....however just a tad more stiff like in sport mode I would like to have in normal mode. Was hoping to get more of that but all in all for the little change it was.....got good results.
But I also have to remember reason #1 is tire wear...hoping to save $100s down the line.
(This is the kind of stuff that happens to me since having a newborn lol).
Immediate reactions.
there is a difference to be felt between 40-70mph but not much. However in sport mode the steering is definitely even stiffer than beforehand in sport mode. This was clear but nothing I'll ever notice again. I left it off sport mode the rest of the drive to better feel the difference since I usually am in Normal Drive mode.
Little more precise at 100mph while in light turns. More like I was on a rail than before. 100 while coming around the bend felt more like 80, 90? Not a huge difference here though dont let me overstate.
The biggest difference was with hard braking. From about 85-40 the car remained much more solid than before. Felt really good actually like THIS is how it's supposed to be.
Lastly on a slightly uneven/bumpy road the steering remained straight much more than it had before.
Im ok with the steering in the IS. I like that its not a completely numb feeling like some comparable makes....however just a tad more stiff like in sport mode I would like to have in normal mode. Was hoping to get more of that but all in all for the little change it was.....got good results.
But I also have to remember reason #1 is tire wear...hoping to save $100s down the line.
Have you ever seen a Lexus source that describes how/when it does it?
Ive seen brochures, websites, magazines etc detailing what sport/sport+ do but never heard/seen anything about stiffer steering (except vgrs in rwd models). Plz link one if you know of one.
01-30-20, 09:26 PM
#37
I personally have not noticed (or really paid attention to) whether the steering is stiffer in sports mode. I know RWD FSport models get Variabie Gear Ratio Steering (I think that’s what it’s called) but never heard of AWD models having that or even a similar feature.
Have you ever seen a Lexus source that describes how/when it does it?
Ive seen brochures, websites, magazines etc detailing what sport/sport+ do but never heard/seen anything about stiffer steering (except vgrs in rwd models). Plz link one if you know of one.
Have you ever seen a Lexus source that describes how/when it does it?
Ive seen brochures, websites, magazines etc detailing what sport/sport+ do but never heard/seen anything about stiffer steering (except vgrs in rwd models). Plz link one if you know of one.
All I know is my IS350 Base definitely does get stiffer in sport mode. I believe the F-Sport drivers reported this happening in Sport+ mode? Not sure if it was in Sport mode for them too. It's most easily noticed at lower speeds, the change takes just a couple seconds so easy to switch back and forth between normal and sport when rounding a turn at say 40mph.
Wouldn't it be odd if that didnt happen in an AWD.
01-31-20, 09:19 AM
#38
Lexus Test Driver
I do not have a source for you sorry.
All I know is my IS350 Base definitely does get stiffer in sport mode. I believe the F-Sport drivers reported this happening in Sport+ mode? Not sure if it was in Sport mode for them too. It's most easily noticed at lower speeds, the change takes just a couple seconds so easy to switch back and forth between normal and sport when rounding a turn at say 40mph.
Wouldn't it be odd if that didnt happen in an AWD.
All I know is my IS350 Base definitely does get stiffer in sport mode. I believe the F-Sport drivers reported this happening in Sport+ mode? Not sure if it was in Sport mode for them too. It's most easily noticed at lower speeds, the change takes just a couple seconds so easy to switch back and forth between normal and sport when rounding a turn at say 40mph.
Wouldn't it be odd if that didnt happen in an AWD.
01-31-20, 11:54 AM
#39
upd: Tested it today, and Sport+ and Sport definitely set a different weight to the steering wheel.
Last edited by sunamer; 01-31-20 at 11:27 PM.
02-01-20, 10:22 PM
#40
02-02-20, 11:44 AM
#41
Instructor
02-03-20, 03:27 PM
#42
Racer
Thread Starter
02-03-20, 03:29 PM
#43
15 RWD f sport, no VGRS. VGRS is responsible for dynamic changes in the steering ratio, not how heavy the steering wheel feels, which is dictated by the power steering ecu..
02-03-20, 08:37 PM
#44
Pole Position
Sport mode (not Sport+ mode) does indeed cut back EPS assist a little to make the steering feel “tighter” or “heavier” along with more aggressive shifting from the transmission. I swear there are like 50 threads on this topic lol.
