RR Racing Ultimate Steering Response System (USRS) limited time $20 discount
09-05-18, 09:57 AM
#46
Driver School Candidate
Does anyone know folks who have these on their 3is? A reviewer on the RR website said it made the ride a bit too stiff/harsh for daily driving. Not wanting to turn the IS into a gokart..
09-05-18, 10:27 AM
#47
I might want to get in on this group buy depending on the price, worst case scenario I don’t like the ride quality after the install I go back to the OEM and sell these for cheap to another forum guy.
09-05-18, 03:00 PM
#48
Pole Position
No word from RR Racing yet?
09-05-18, 03:27 PM
#49
Sponsor
iTrader: (1)
Rafi
The following users liked this post:
UngBuck (09-05-18)
09-05-18, 04:01 PM
#53
Since we have concluded on the GB, if anyone is looking between or considering alternatives:
FIGS Engineering offers 2 types but are more track orientated:
Both options are $360:
http://www.shopfigs.com/v3/CAT-LEXUS...P3491K-IN-BRKT
http://www.shopfigs.com/v3/CAT-LEXUS...91K-90-IN-BRKT
If you want OE quality, lower-price ($50-60 per bushing), minimal NVH, and potentially the toe fix.
You can fit the harder RCF & GSF bushings (Linked is the ISF thread):
https://www.clublexus.com/forums/is-...gs-in-isf.html
Part#: 48076-24010 and 48075-24010
RCF & GSF bushings are harder than the ISF, thus also not the same as indicated by part numbers.
By theory, the harder the bushing the more the fix for inner tire wear and the better the handling.
But the harder the bushing the more NVH your vehicle can encounter.
Hardest: FIGS & RRRacing
Harder: RCF & GSF
Hard: ISF
Here is a thread about the 2/3IS owners using the harder ISF bushing (should be 20% harder than regular 2/3IS):
Inner tire wear is claimed to be improved but still present.
https://www.clublexus.com/forums/sus...a-non-isf.html
Part#: 48075-30020 and 48076-30020
For the DIYers out there:
FIGS Engineering offers 2 types but are more track orientated:
Both options are $360:
http://www.shopfigs.com/v3/CAT-LEXUS...P3491K-IN-BRKT
http://www.shopfigs.com/v3/CAT-LEXUS...91K-90-IN-BRKT
If you want OE quality, lower-price ($50-60 per bushing), minimal NVH, and potentially the toe fix.
You can fit the harder RCF & GSF bushings (Linked is the ISF thread):
https://www.clublexus.com/forums/is-...gs-in-isf.html
Part#: 48076-24010 and 48075-24010
RCF & GSF bushings are harder than the ISF, thus also not the same as indicated by part numbers.
By theory, the harder the bushing the more the fix for inner tire wear and the better the handling.
But the harder the bushing the more NVH your vehicle can encounter.
Hardest: FIGS & RRRacing
Harder: RCF & GSF
Hard: ISF
Here is a thread about the 2/3IS owners using the harder ISF bushing (should be 20% harder than regular 2/3IS):
Inner tire wear is claimed to be improved but still present.
https://www.clublexus.com/forums/sus...a-non-isf.html
Part#: 48075-30020 and 48076-30020
For the DIYers out there:
I tossed in some low mile IS-F bushings a few weeks back. Set the toe at zero and called it done for now.
No increase in NVH and negligible change in steering input. Of course mine just hit 61k mi.
People be Wise when installing these. If the suspension is hanging down AND YOU TIGHTEN the nut, you will damage that bushing!!!
Tighten the nut ONLY when the cars suspension is at normal ride height! Otherwise you twist the bushing apart!
It won't fail in 500 mi but it will not survive 25k mi.
This applies to all bushings which have rubber bonded to inner and outer metal sleeves. Not ball joints, heim joints, bearings, or poly urethane.
No increase in NVH and negligible change in steering input. Of course mine just hit 61k mi.
People be Wise when installing these. If the suspension is hanging down AND YOU TIGHTEN the nut, you will damage that bushing!!!
Tighten the nut ONLY when the cars suspension is at normal ride height! Otherwise you twist the bushing apart!
It won't fail in 500 mi but it will not survive 25k mi.
This applies to all bushings which have rubber bonded to inner and outer metal sleeves. Not ball joints, heim joints, bearings, or poly urethane.
Last edited by nan88; 09-05-18 at 05:04 PM.
09-05-18, 04:14 PM
#54
Sponsor
iTrader: (1)
If anyone is looking between or considering alternatives:
FIGS Engineering offers 2 types but are more track orientated:
Both options are $360:
http://www.shopfigs.com/v3/CAT-LEXUS...P3491K-IN-BRKT
http://www.shopfigs.com/v3/CAT-LEXUS...91K-90-IN-BRKT
If you want OE quality, lower-price ($50-60 per bushing), minimal NVH, and potentially the toe fix.
You can fit the harder RCF & GSF bushings (Linked is the ISF thread):
https://www.clublexus.com/forums/is-...gs-in-isf.html
Part#: 48076-24010 and 48075-24010
FIGS Engineering offers 2 types but are more track orientated:
Both options are $360:
http://www.shopfigs.com/v3/CAT-LEXUS...P3491K-IN-BRKT
http://www.shopfigs.com/v3/CAT-LEXUS...91K-90-IN-BRKT
If you want OE quality, lower-price ($50-60 per bushing), minimal NVH, and potentially the toe fix.
You can fit the harder RCF & GSF bushings (Linked is the ISF thread):
https://www.clublexus.com/forums/is-...gs-in-isf.html
Part#: 48076-24010 and 48075-24010
OE is crap even if it’s off an RCF, it’s only marginally stiffer than stock.
Our bushings are the only bushing that is thrust loaded and eliminates axial movement of the control arm.... the others DONT.
USRS is also better than OE Quality.
Rafi
09-05-18, 04:19 PM
#55
Pole Position
09-05-18, 04:25 PM
#56
Some people here in the thread might prefer OE parts to minimize questioning of a dealership denying their warranty.
I am just providing information and options to the members in this thread, with various sources and collective info.
Last edited by nan88; 09-05-18 at 04:35 PM.
The following users liked this post:
hotsaw11 (09-07-18)
09-05-18, 04:58 PM
#57
Pole Position
Well everyone, at least we tried to do a GB, sucks that the vendor wasn’t willing to do it.
09-05-18, 06:40 PM
#58
Driver School Candidate
I may pick them up and hold onto them for once I am out of warranty. Or get a definite that they won’t void it.
In the meantime any thoughts as to setting the toe and camber? An older thread mentioned setting the toe and camber as close to zero as possible. Not worried about a bit of loss on the handling. Would rather get better tire wear.
In the meantime any thoughts as to setting the toe and camber? An older thread mentioned setting the toe and camber as close to zero as possible. Not worried about a bit of loss on the handling. Would rather get better tire wear.
09-05-18, 06:53 PM
#59
I may pick them up and hold onto them for once I am out of warranty. Or get a definite that they won’t void it.
In the meantime any thoughts as to setting the toe and camber? An older thread mentioned setting the toe and camber as close to zero as possible. Not worried about a bit of loss on the handling. Would rather get better tire wear.
In the meantime any thoughts as to setting the toe and camber? An older thread mentioned setting the toe and camber as close to zero as possible. Not worried about a bit of loss on the handling. Would rather get better tire wear.
09-05-18, 08:00 PM
#60
Pole Position
No, actually this does fix inner tire wear. Some people think that it’s because of just the camber but it’s not. It’s the dynamic change in toe while braking and cornering that causes that inner tire wear if you change the camber it will help a little but you’ll still get inner tire wear because of the dynamic toe change.