New Forum member and IS owner

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Jan 10, 2019 | 08:27 AM
  #16  
Quote: Most that replaced it were using either the RRRacing one or the FIGS one.
I think it was only recently discovered that the RC-F/GS-F ones would fit...as the part number is different because the bushings are harder.
Considering the price of the aftermarket ones, and that the RC/GS is an OEM part, I'll probably look at changing them out this Summer with the RC/GS part.
figgs and RRacing are insanely priced like 400 usd??
there also polyurethane and require annual greasing ti prevent squeaking...the RCF/GSF bushings don’t. Also I read from a lot of people on here that road noise, vibration and overall harshness was to much with figgs/rracing, I didn’t notice any increase in those things with the rcf/gsf bushings.
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Jan 10, 2019 | 08:32 AM
  #17  
Quote:


figgs and RRacing are insanely priced like 400 usd??
there also polyurethane and require annual greasing ti prevent squeaking...the RCF/GSF bushings don’t. Also I read from a lot of people on here that road noise, vibration and overall harshness was to much with figgs/rracing, I didn’t notice any increase in those things with the rcf/gsf bushings.
Yeah...price and side effects is what deterred me from the RRRacing and Figs ones.
Even if the RC/GS OEM pack it in a few years down the road, to replace them again I would still be ahead costwise, and it's an OEM part, which I much prefer.
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Jan 10, 2019 | 08:40 AM
  #18  
Quote: Yeah...price and side effects is what deterred me from the RRRacing and Figs ones.
Even if the RC/GS OEM pack it in a few years down the road, to replace them again I would still be ahead costwise, and it's an OEM part, which I much prefer.
really? Oem don’t last that long? As long as the stock factory ones would or even less?
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Jan 10, 2019 | 09:01 AM
  #19  
Quote:
figgs and RRacing are insanely priced like 400 usd??
there also polyurethane and require annual greasing ti prevent squeaking...the RCF/GSF bushings don’t. Also I read from a lot of people on here that road noise, vibration and overall harshness was to much with figgs/rracing, I didn’t notice any increase in those things with the rcf/gsf bushings.
Was wondering about that, as a number did comment that the ride was too harsh and they went back to stock. Not sure where you are in Ontario, but you likely have potholed and uneven roads around. So with these ones it was nearly all positives and no downside in ride, comfort, feedback through steering?
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Jan 10, 2019 | 09:40 AM
  #20  
Quote: Was wondering about that, as a number did comment that the ride was too harsh and they went back to stock. Not sure where you are in Ontario, but you likely have potholed and uneven roads around. So with these ones it was nearly all positives and no downside in ride, comfort, feedback through steering?
yup some roads are bad here. If you hit a big bump you’ll feel it, even without upgrading bushings...
stock the car felt weird. Hard braking would make the wheel squirrel around, any bend in the road the car would follow, car could never drive straight if I took hands off the wheel etc... did the upgraded RCF/GSF bushings and now it’s soooo nice. Drives straight as an arrow, no wondering/pulling anymore. No difference in road noise/harahness. I did the upgrade 1 week into owning the car, also huge plus is reduced inner tire wear which will save you more $$$ over time.
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Jan 10, 2019 | 10:44 AM
  #21  
Quote:


really? Oem don’t last that long? As long as the stock factory ones would or even less?
LOL! Lemme rephrase that.
I was suggesting that in the future IF the bushing went, then I'd still be ahead on replacement cost.
Rubber has a shelf life, and with the winters, salt, brine (most recent years) we have here in Ontario, the shelf life takes a little hit from that.
You figure tire rubber (which I know is a different formulation than the bushings) lasts 5-6 years before weather cracks start to appear and the rubber hardens, so how much longer can the bushings last?!
It's the dry rot that will eventually do them in.
I can only imagine in other climates this will be much better or much worse, depending where you are on the planet.
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Jan 10, 2019 | 11:37 AM
  #22  
Quote:


yup mine were 54$ usd each, I live in Ottawa...I ordered them to a P.O. box (ups store) like 30 min across border.. picked them up to save the 30$ in shipping they wanted...if ur near the border u could try that or just pay shipping Here’s the part #’s for them
48075-24010 and 48076-24010.
I used lexuspartsnow.com but as long as you buy those part numbers your good. Makes a huge difference in handling and steering wheel feel.
And the job only takes 30 minutes, make sure you don’t overpay... literally 30 minutes from the time I dropped car off to the time it was back in the parking lot waiting for me.
Is there a version of these for the 2018 IS350? lexuspartsnow.com says these will not fit my car...

Chris
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Jan 10, 2019 | 11:41 AM
  #23  
Technically the GS-F/RC-F bushings will not fit any IS when using a part lookup database.
The reality is the physical dimension of the part from either vehicle is the same, only the compound of the rubber is harder on the GS/RC...hence the part number for the GS/RC is different from the IS.

So to answer your question if there is a version for your 2018 IS, technically the answer is no.
However, if your 2018 IS has the same bushing part number as a 2014 (or 2015, or 2016, etc.) IS, then the GS/RC bushings will fit.
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Jan 10, 2019 | 12:18 PM
  #24  
Quote: Technically the GS-F/RC-F bushings will not fit any IS when using a part lookup database.
The reality is the physical dimension of the part from either vehicle is the same, only the compound of the rubber is harder on the GS/RC...hence the part number for the GS/RC is different from the IS.

So to answer your question if there is a version for your 2018 IS, technically the answer is no.
However, if your 2018 IS has the same bushing part number as a 2014 (or 2015, or 2016, etc.) IS, then the GS/RC bushings will fit.
Got it, I wasn't tracking, but am now - thanks!

Chris
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Jan 10, 2019 | 12:32 PM
  #25  
Quote:
stock the car felt weird. Hard braking would make the wheel squirrel around, any bend in the road the car would follow, car could never drive straight if I took hands off the wheel etc... did the upgraded RCF/GSF bushings and now it’s soooo nice. Drives straight as an arrow, no wondering/pulling anymore. No difference in road noise/harahness. I did the upgrade 1 week into owning the car, also huge plus is reduced inner tire wear which will save you more $$$ over time.
What were you driving before? Maybe it's more a function that you had a comparatively solid ride before, as I went from a Z4 and to me it feels fine.

Quote: Is there a version of these for the 2018 IS350? lexuspartsnow.com says these will not fit my car...
Yeah, said the same for my 2014.

So evidently Lexus didn't want to compromise on the ride of the IS too much, choosing rather to upgrade the RC.
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Jan 10, 2019 | 12:37 PM
  #26  
Quote: What were you driving before? Maybe it's more a function that you had a comparatively solid ride before, as I went from a Z4 and to me it feels fine.



Yeah, said the same for my 2014.

So evidently Lexus didn't want to compromise on the ride of the IS too much, choosing rather to upgrade the RC.
Are these for the front only, or both front and rear?

Chris
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Jan 10, 2019 | 12:40 PM
  #27  
Quote: Are these for the front only, or both front and rear?

Chris
The bushings in question are the front lower control arm bushings...which are located at the rear of the front lower control arm. Those are the ones that are easily replaced with the GS/RC bushings.

When you say rear, I not sure if you mean rear of the vehicle or rear of the arm.
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Jan 10, 2019 | 12:52 PM
  #28  
Quote: The bushings in question are the front lower control arm bushings...which are located at the rear of the front lower control arm. Those are the ones that are easily replaced with the GS/RC bushings.

When you say rear, I not sure if you mean rear of the vehicle or rear of the arm.
I meant rear of the vehicle, so that helps. Thanks again.

Chris
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