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I'm looking to add some additional enhancements in driving and stability for my 2010 IS350 with stock suspension, and wanted to find out about other people's experience with the F Sport Sway Bar set (Part number PTR0253094). Also, can it be installed with the stock suspension with no issues?
It's a worthwhile upgrade as the sway bars greatly increase roll resistance. You can definitely use them in combination with the stock shocks and springs.
It's a worthwhile upgrade as the sway bars greatly increase roll resistance. You can definitely use them in combination with the stock shocks and springs.
Thank you very much! I'm going to go thru the reviews, but it looks like the data you provided is sufficient!
On stock sport suspension now with ONLY a rear F-sport sway bar. Been a very worthwhile upgrade!
Along with the F Sport Sway Bar, I also bought RR Racing's Ultimate Steering Response System which is a Lower Control Arm bushing and housing upgrade Product Code:ISFXLCA001
They say it improves steering and braking by eliminating excessive movement in the lower control arm bushing. Lets see how these work out
Along with the F Sport Sway Bar, I also bought RR Racing's Ultimate Steering Response System which is a Lower Control Arm bushing and housing upgrade Product Code:ISFXLCA001
They say it improves steering and braking by eliminating excessive movement in the lower control arm bushing. Lets see how these work out
My First mod on my car. They're definitely worth the money.
How about upgrading the steering rack bushings while you're at it? I'd recommend the Fig Engineering polyurethane bushings for the sway bars as well..
The document from Lexus regarding the stiffness values of the suspension is useful but maybe less useful than it should be. The sway bars on the IS250 and IS350 are the same, but the increase in stiffness values in the chart are different. I suspect the values are actually with and without sport suspension for 2009-2013 sedan models (as 2006-2008 models used the same sway bar with and without sport package), but I haven't been able to verify the exact details.
Along with the F Sport Sway Bar, I also bought RR Racing's Ultimate Steering Response System which is a Lower Control Arm bushing and housing upgrade Product Code:ISFXLCA001
They say it improves steering and braking by eliminating excessive movement in the lower control arm bushing. Lets see how these work out
I've got the very same set on my car; got mine to help with the inner front tire wear as that continues to be a problem on my car (mainly for the way I drive it...HARD ) But it has helped; the wear isn't as quick to wear down the tires. All this even still after numerous alignments throughout its life.
I've got the very same set on my car; got mine to help with the inner front tire wear as that continues to be a problem on my car (mainly for the way I drive it...HARD ) But it has helped; the wear isn't as quick to wear down the tires. All this even still after numerous alignments throughout its life.
I have had the same experience with these bushings. Inner tire wear has been significantly reduced.
The only downside to these bushings is the increase in harshness due to irregularities in the road causing vibration (e.g. brick roads, etc.).
It's a worthwhile upgrade as the sway bars greatly increase roll resistance. You can definitely use them in combination with the stock shocks and springs.
LOL some of the models are a 300% increase? Do you roll side ways off your seat when turning the corner?
Originally Posted by Jeff Lange
The document from Lexus regarding the stiffness values of the suspension is useful but maybe less useful than it should be. The sway bars on the IS250 and IS350 are the same, but the increase in stiffness values in the chart are different. I suspect the values are actually with and without sport suspension for 2009-2013 sedan models (as 2006-2008 models used the same sway bar with and without sport package), but I haven't been able to verify the exact details.
Jeff
Are you saying the some of the percentage values are comparing a car with sports suspension vs one that does not?
I have had the same experience with these bushings. Inner tire wear has been significantly reduced.
The only downside to these bushings is the increase in harshness due to irregularities in the road causing vibration (e.g. brick roads, etc.).
-Kenij
So would you say NVH is significantly increased? If so, how bad is it? The reason I'm asking is I drive a lot between Northern and Southern California, and some of the roads I hit doing the 370 miles can have a lot of imperfections. 8 hours of a vibrating steering wheel could get tiring pretty quickly
Are you saying the some of the percentage values are comparing a car with sports suspension vs one that does not?
What I'm saying is that I don't know what the numbers are referring to. There are 3 types of ISx50 Sedan sway bars, 2006-2008, 2009-2013 without Sport Package and 2009-2013 with Sport Package. IS250 and IS350 use the same bars - so which bars are they actually comparing to?
I've modified the original F-Sport brochure document to what I believe is what was intended to be displayed on the chart for the IS RWD, IS AWD, IS-Convertible, and GS models. They all show a 1:3 front/rear ratio of improvement over stock.
Coincidentally, I'm in the middle of swapping out the stock sway bars with the F-Sport sway bars on the second IS that I have (IS350C). I can try to measure the stock sway bars of the IS350C to see if these figures do have validity. So far, I can attest that the IS350C front F-Sport sway bar is noticeably heavier than the OEM front sway bar. Once I get the rear bar swapped this weekend, I can provide further input.
I've got the very same set on my car; got mine to help with the inner front tire wear as that continues to be a problem on my car (mainly for the way I drive it...HARD ) But it has helped; the wear isn't as quick to wear down the tires. All this even still after numerous alignments throughout its life.
I wanted to ask you about NVH. Would you say steering feedback is harsh? Besides stiffer steering, does it introduce any vibrations and do road imperfections become much more noticeable? The reason I'm asking is I do a lot of long distance driving to Southern California, and long segments of the highways can have lots of imperfections due to heavy trucking across the state. I guess what I'm asking is for everyday driving will the effects be negative? 8 hours or more of a vibrating steering wheel can become annoying pretty fast
05-06-20, 07:06 AM
F Sport Sway Bar set installed UPDATE
) But it has helped; the wear isn't as quick to wear down the tires. All this even still after numerous alignments throughout its life.
