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RC-F bushings 48075-24010 and 48076-24010 (0 offset)
Had these on for nearly 2 years, very nice improvement over the factory ones. When I installed them first I could tell they were a bit firmer, but after 2 days I got used to the new feel. Remember driving on roundabouts (we have few of them in my area) and feeling the car being lot tighter on turns and it was going exactly where I intended it to go, without that flaky, mushy, feeling it had prior to the new bushings. Also changing lanes on the highway has improved. So 2 years in, the car still feels very solid, no squeaks and the tires are holding up great with nice and even wear.
I'm running IS-F take offs and getting even wear across the tire. That said the scrub from turning sharp is taking a toll on the edges but nothing drastic. I've got the toe and pressure pretty ideal for how the car is used. The rear tires could go first at this rate!
Order the RC-F parts for maintenance free DD....
If I ever do go poly they will have grease fitting installed. It's silly to have to pull it apart to lube the dang things. Heck they should have it that way anyway.
Hi Randy - Yep, you bought them from me I'm still happy with my RRRacing units
RC-F bushings 48075-24010 and 48076-24010 (0 offset)
Had these on for nearly 2 years, very nice improvement over the factory ones. When I installed them first I could tell they were a bit firmer, but after 2 days I got used to the new feel. Remember driving on roundabouts (we have few of them in my area) and feeling the car being lot tighter on turns and it was going exactly where I intended it to go, without that flaky, mushy, feeling it had prior to the new bushings. Also changing lanes on the highway has improved. So 2 years in, the car still feels very solid, no squeaks and the tires are holding up great with nice and even wear.
Thanks a lot for your thorough feedback and pictures! With everyone's input, I am going to pull the trigger and get these. I think I will be the perfect compromise to keep the comfort and add a little performance, while taking care of the tire problem. Thank you guys!
Hi Randy - Yep, you bought them from me I'm still happy with my RRRacing units
Lou
Yep! Sorta wish I'd just bought new RC-F, but these have been tested to speed limiter and are not bad for DD clocking 20k mi a year... Car has an IS-F rear anti-sway bar... Does OK in F-Sport trim. They actually did well with damping rates. Biggest gripe is the light steering input followed by bushing deflection of LCA...
Torque these bolts to 83 ft-lb with the wheels on the ground.
Question for you, what is the (1,150,83) corresponding to? Not able to see it all that well (viewing on phone) I know the big bolt on the RR was torqued down over 150 ft lbs if I remember correctly.
I’m kind of digging the RCF idea. Seems like a pretty good balance of performance and comfort. I’ll need to think a little more of which direction I want to go with. Alredy have Figs rear sway to install and going to buy some megan chassis bracing. I’m just trying to choose between the three with the Figs leading . Lol.
I have the Figs on my IS350 and it was the best thing I have ever done for my IS. My only regret was not installing them on the car when it was new. I would shy away from a factory LCA bushing option since they all are designed for dynamic toe deflection during cornering and braking. It has been said before that the IS will have more of a BMW feel after the install of the Figs/RR bushing and I can attest to that. Very positive feel and makes the vehicles stability increase 100x over. My IS350 has 57k miles on it now and it tracks better on the highway, corners more flat and the squirrely breaking was all but eliminated.
Hi guys, I just wanted to revive this real quick and say that I am loving the RC-F bushings. Much, much more comfortable than the RRs. Stiff, sure, but none of that rough chassis vibration I was feeling through my legs and my seat (along with reduced rattle in cabin). Steering seems nice and tight, braking is great, cornering is about the same, honestly I'm not noticing a huge performance downgrade from poly bushings, just much more comfortable. Time will tell whether they really do eliminate the tire wear issue but based on primavera's tire pics after two years, I think it's going to work out. I have spent so much time reading and worrying about bushings...I never want to hear about bushings again!
my toe was set to zero since i purchased my IS in 2014. Even with stock LCAB, i didn't have tire wear issues. Now running RCF LCAB and they're great. A lot more predictable. tires wearing evenly ofc. For a daily driver, no need to shell out $300 for poly bushings. Way Overpriced IMO and although they do offer increased limits but with the added NVH its a trade off that i'm not willing to sacrifice.
Totally agree, I feel like it took so much digging to find out about these. I wish I had heard about them from the start. Anybody that's on the fence my suggestion is to just go for it and get them.
10-21-18, 01:00 PM
I'm still happy with my RRRacing units
