ELexis

Thanks 2013FSport. Was going to follow up and question using jack stand on one side while the other side remains on ramp, and not having the one wheel under load while changing the LCAB. I would suggest taller ramps for some additional clearance however, seems the higher ramps to allow the vehicle the gradual incline to clear front, even more so in vehicle is lowered.

primavera

ELexis

Interested if any member that has installed the RC F control arm bushings (48076-24010 / Driver side) & (48075-24010 / Passenger side, experience a "creaking' noise, when extreme temperatures are encountered, 5° F and less (similar when non graphite poly-urethane bushings are used). If not the control arm bushings, perhaps it may be IS F sway bar (part # 4881153070) bushings (part # 4881553060) ?

Part # 48076-24010 (Left / Right 0 offset)
Lexus RC F Base 2015 - 2022
Lexus RC F Premium 2015 - 2019
Lexus RC F Track Edition 2020
Lexus RC F Fuji Speedway Edition 2021, 2022

Part # 48075-30030 (Left / Right 0 offset)
Lexus IS 350 2006 - 2013
Lexus RC 300 2017, 2018, 2022
Lexus RC 300 Base 2016, 2019, 2020, 2021
Lexus RC 300 F Sport 2016, 2020, 2021
Lexus RC 300 Premium 2019
Lexus RC 350 2017, 2018
Lexus RC 350 Base 2015, 2016, 2019, 2020, 2021, 2022
Lexus RC 350 F Sport 2015, 2016, 2020, 2021, 2022
Lexus RC 350 Premium 2019

Paul4949

Just arrived today and will install sometime this week. 0 offset for 2011 Lexus IS250 left and right side.

2013FSport

iTrader: (2)

RC parts would have been a better choice to minimize tire wear with no real change to anything else that negatively impacts ride quality.

JM2C

Paul4949

These were the correct parts listed for my year model. Will these not help the tire wear? I thought the main issue with the tire wear was the offset of the factory bushings. I thought the 0 offset was the goal. I would like to make sure if there is a difference I will return these and get the RC ones.

ELexis

Paul4949, Part # 48076-24010 (Left / Right 0 offset / Lexus RC F Base2015 - 2022 , RC F Premium2015 - 2019 , RC F Track Edition2020 , RC F Fuji Speedway Edition2021, 2022), I believe are made of a harder durometer rubber than OEM part Part # 48075-30030 (Left / Right 0 offset / Lexus IS 350 2006 - 2013).

Paul4949

Thank you I was thinking it would have to be a harder material for the rubber. That would be the only possible explanation for a difference in the two different part numbers. (30030-24010)

2013FSport

iTrader: (2)

Yes they are the correct PN by the book.
The OEM +/- offset the car may or may not have been equipped (could be a zero 'no offset' on one or both sides) can correct a small amount of caster variance from side to side.

Caster does not induce tire wear like incorrect Toe or excessive positive/negative Camber.
Caster is what helps the car drive straight on its own. Factory is like 8°.

So, the increased firmness of the RC-F bushing helps maintain toe better which can help tire life... that said, if 20% of a cars life is spent in a parking lot, the edges will be destroyed. Run the front only pressure up to 38 40 psi to minimize edge wear.
If the insides are still getting chewed off, toe it in slightly from its current setting.

Make sense?

Paul4949

Thank you, I will have my mechanic check the line up and make sure everything is correct.

Paul4949

Can I use Car ramps under both front wheels at the same time to do this job? Is adequate enough to torque them while they are under load?

Paul4949

What I meant to say earlier was. If I put the control arm bushings on myself and do them one side at a time with a floor jack, can I torque the bolts while on the floor jack but only tighten the nut on the control arm bushing then when finished pull the car upon car ramps and torque the control arm bushing nut to spec? Or does the whole car have to be level to torque the control arm bushing nut?

Paul4949

Installed them yesterday took me about 45 minutes to do both sides and easy installation under my carport. Now to have it lined up.