IS F (2008-2014) Discussion topics related to the IS F model

Figs or RR Racing LCA bushing?

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Old 02-03-18, 11:31 PM
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Ramfis
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Default Figs or RR Racing LCA bushing?

I need to buy this bushing but not decided yet. I'm wondering if the RRRacing (USRS) is too tough on the road and will have the interior rattleling and vibrating? How this two bushings compares? Any comments will be appreciated.
Thanks
Old 02-04-18, 12:31 AM
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isfvss
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Read a few threads first. RR Racing you will notice a tiny difference over small ripples only. For the first drive, but you will love the TIGHTNESS of the front suspension the end.
Old 02-04-18, 04:21 AM
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Jz39
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Seriously, the difference in NVH is almost zero with the RR. Don’t worry about it at all. It is 100% upside.
Old 02-04-18, 05:28 AM
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flowrider
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OP, welcome to the site. Lot's of GREAT information here. My thought here its that you learn to use the Search function. Lots and Lots of threads concerning this topic. Personally, I have the RRRacing USRS bushings and am very happy with them. NVME is increased, but the trade off is totally worth it. IMO, either the USRS or Figs solution are both great options. Figs bushings come to two durometer ratings.

Lou
Old 02-04-18, 05:45 AM
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Vitveet
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Originally Posted by Jz39
Seriously, the difference in NVH is almost zero with the RR. Don’t worry about it at all. It is 100% upside.
I think we should be honest with the new guy..... definitely not "zero" nor all "100% upside".
Now I'm not sure if there's a difference between the years (I have a '12....maybe the earlier years had more upside than downside being that they have different suspensions) but it was all downhill on my '12 (besides fixing the tire wear issue, which the USRS did do). NVH definitely increase a large bit.
But I'm not really complaining though, moreso just giving my honest feedback. My '12 with stock suspension rode like a Cadillac it was sooo smooth and forgiving! So much so, that I had to hurry and lower it and do the USRS so it could feel like a true sports car. I ride smooth all week in the RX350, so didn't want the same feeling in the weekend fun car....and the USRS fixed my "issue"!☺️

V.
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Old 02-04-18, 07:13 AM
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Diesel350
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Originally Posted by Vitveet
I think we should be honest with the new guy..... definitely not "zero" nor all "100% upside".
Now I'm not sure if there's a difference between the years (I have a '12....maybe the earlier years had more upside than downside being that they have different suspensions) but it was all downhill on my '12 (besides fixing the tire wear issue, which the USRS did do). NVH definitely increase a large bit.
But I'm not really complaining though, moreso just giving my honest feedback. My '12 with stock suspension rode like a Cadillac it was sooo smooth and forgiving! So much so, that I had to hurry and lower it and do the USRS so it could feel like a true sports car. I ride smooth all week in the RX350, so didn't want the same feeling in the weekend fun car....and the USRS fixed my "issue"!☺️

V.
I got these in the garage waiting to install on my 12. Hopefully I don’t regret it.
Old 02-04-18, 07:30 AM
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Jz39
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I stand by my statement that there is zero downside to the RR busings, at least on my 2011. This is one of my favorite mods I've ever done to any car. It's that good. I would just say you can "feel" the car a bit more through the steering, which I consider a very good thing. If you're driving in an area with roads so bad that any additional stiffness is going to make driving unbearable, than you've got bigger problems than the bushings and probably could benefit from a different ride.

Install 'em ASAP. You'll wonder why you ever waited this long! I could literally never imagine driving the car stock again.

V-any chance you got a bad install or something? I just can't rectify your impressions with anything I've observed.

Last edited by Jz39; 02-04-18 at 07:38 AM.
Old 02-04-18, 07:47 AM
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Originally Posted by Jz39
I stand by my statement that there is zero downside to the RR busings, at least on my 2011. This is one of my favorite mods I've ever done to any car. It's that good. I would just say you can "feel" the car a bit more through the steering, which I consider a very good thing. If you're driving in an area with roads so bad that any additional stiffness is going to make driving unbearable, than you've got bigger problems than the bushings and probably could benefit from a different ride.

Install 'em ASAP. You'll wonder why you ever waited this long! I could literally never imagine driving the car stock again.

V-any chance you got a bad install or something? I just can't rectify your impressions with anything I've observed.
Again, not downing the USRS one bit. I mainly bought it to fix the inner tire wear and it definitely has done that! I'm at 18k miles on my current tires and they are wearing 100% evenly, which I'm proud of!
You are right, turn in is better, handling and feel is better! But it DOES make the ride harsher, no denying it there. Again, in my case, not a bad thing by any means as I personally LIKE THIS FEEL BETTER being that I'm driving a sports sedan. Some people may not though, especially if it's a daily driver and/or they do a lot of riding over rough rodes. Everyone and every situation is/could be different. For that reason, just trying to give honest feedback. But no complaints about them here and I love them for the job they do and a cheap "mod"!

V.
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Old 02-04-18, 08:26 AM
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Originally Posted by Vitveet
Again, not downing the USRS one bit. I mainly bought it to fix the inner tire wear and it definitely has done that! I'm at 18k miles on my current tires and they are wearing 100% evenly, which I'm proud of!
You are right, turn in is better, handling and feel is better! But it DOES make the ride harsher, no denying it there. Again, in my case, not a bad thing by any means as I personally LIKE THIS FEEL BETTER being that I'm driving a sports sedan. Some people may not though, especially if it's a daily driver and/or they do a lot of riding over rough rodes. Everyone and every situation is/could be different. For that reason, just trying to give honest feedback. But no complaints about them here and I love them for the job they do and a cheap "mod"!

V.
thanks, I realy appreciate the honest comments, that is exactly why I started the thread, I did use the search function and read a few but was not able yet to have the answer I was looking for, I’m not new on the site, you can see my posts since 2015. I really want to fix the inner wear issue but the roads are not the best here. I would like the stiffness on handling but I would not like to feel the care ripping apart when taking a crack on the road If you know what I mean. My first choice was the USRS, but considering the figs....
Old 02-04-18, 08:31 AM
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This is my second ser of tires (Toyo Sport T1) and only lasted 15K because of the inner wear.
Old 02-04-18, 09:37 AM
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Not much you can do to the F to really make it a better car. The lower control arm bushing is a serious improvement and makes a difference. I didn't have my 2011 only a few months, when I installed Fig's 90 durometer bushings. Smart move just for making the tires last longer.

There is an alignment specialist here that is a real suspension expert. Because of me, my friend bought a 2008 F and took it to him to check for a leaking strut. The specialist said NOT to install the bushings because the suspension was already "track ready". So go figure. We'll do it anyway.

By the way, installing the bushings did not change the alignment.

The cat back exhaust also made a difference. The older lady next door tells me that it made the car sound really cool.

Loren
Old 02-04-18, 09:44 AM
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Im gonna be lowering mine soon on the front only. Is it safe to say premature tire wear is guaranteed after lowering? Im not seeing any so far. Stock sized tires on the front with about 6/32" of tread left

If I end up getting bushings, I'll probably be going with Figs. They seem to be more forgiving than USRS. Mine is a daily driver
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Old 02-04-18, 10:00 AM
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Originally Posted by Ramfis
This is my second ser of tires (Toyo Sport T1) and only lasted 15K because of the inner wear


Both the RRRacing and Figs solutions are designed to compensate for the inner tire wear issue. And, as I said above, if your afraid of the NVH, and yes there is added NVH with my USRS bushings, the Figs bushings come with polyurethane bushings of different durometer ratings. The durometer ratings for the RRRacing bushings are 95. for the figs bushings - 80 and 90. So if you are worried about NVH you could choose the softer Figs bushing.

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Old 02-04-18, 10:20 AM
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Originally Posted by flowrider
Both the RRRacing and Figs solutions are designed to compensate for the inner tire wear issue. And, as I said above, if your afraid of the NVH, and yes there is added NVH with my USRS bushings, the Figs bushings come with polyurethane bushings of different durometer ratings. The durometer ratings for the RRRacing bushings are 95. for the figs bushings - 80 and 90. So if you are worried about NVH you could choose the softer Figs bushing.
I live in the “war zone” Cleveland area. I daily a GS350 on forged 19” oem lexus wheels and RS-R down springs. I’m most worried about bending a wheel or getting a cracked rim from going over road expansion gaps and larger cracks in the pavement. So let me ask you guys, the dampening is not affected by the LCA bushings ? It’s just allowing for more communication to travel into the steering wheel and the cars front suspension allows for more feel from the front wishbone suspension.

‘If that’s what these bushings do I’m all in. I just can’t take less dampening. I kinda drive slow over cracks to lessen the crashing effect I get from the low profile tires and larger wheels.

If it does affect the dampening, are we talking a estimated 5%, 10% or 15% increase in stiffness?


thanks,

Old 02-04-18, 12:38 PM
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^^^^As I indicated above they do effect NVH, so yes you will feel more of the road. Of course no effect shock on damping. One other advantage no one has mentioned is much reduced brake dive. On my ISF, brake dive has all but been eliminated. IMHO, wheel integrity will not be comprised by stiffer bushings.

Lou
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