After springs and spacers 15/20mm
The following 17 users liked this post by Velobrew:
1wacko (08-09-22),
arentz07 (07-12-22),
Carolina50 (07-12-22),
delpaso (07-27-22),
DLPTony (07-12-22),
and 12 others liked this post.
. The springs and spacer from were? 
07-12-22, 02:07 PM
#3
Pole Position
Very nice! Is the ride quality affected?
07-12-22, 03:07 PM
#4
Pole Position
RSR IS350 downs have a spring rate of 5.48 kg/mm Front and 8.16kg/mm Rear. By comparison RC F and GS F spring rates are 8.67 Front and 14.4 Rear and even that's supposed to be too soft according to many.
07-12-22, 09:36 PM
#6
Driver
Thread Starter
07-12-22, 10:56 PM
#7
Pole Position
@macmaster what are is500 rates? Are the springs not progressive?
These RSR downs are definitely stiffer than stock but I like the sportier handling.
These RSR downs are definitely stiffer than stock but I like the sportier handling.
Last edited by macmaster; 07-12-22 at 11:07 PM.
Trending Topics
07-13-22, 04:10 AM
#8
Pole Position
We have a mint 2004 G35 coup (100k miles) in the stable too and I can’t stand the ride. It handles like a beast, but even with good tires the road feel is too much for me.
I would love to lower mine like yours, the look is freaking bada$$, but the smoothness must remain.
The following 3 users liked this post by DLPTony:
07-13-22, 08:08 AM
#9
Pole Position
Egads…stiffer than in Sport+? Oof, hard pass. 😜
We have a mint 2004 G35 coup (100k miles) in the stable too and I can’t stand the ride. It handles like a beast, but even with good tires the road feel is too much for me.
I would love to lower mine like yours, the look is freaking bada$$, but the smoothness must remain.
We have a mint 2004 G35 coup (100k miles) in the stable too and I can’t stand the ride. It handles like a beast, but even with good tires the road feel is too much for me.
I would love to lower mine like yours, the look is freaking bada$$, but the smoothness must remain.
The following users liked this post:
DLPTony (07-13-22)
07-13-22, 08:12 AM
#10
Lead Lap
^^ Changing the LCA bushings may help provide a more crisp handling response. The IS 500 uses the same LCA bushings as the IS 350, and I have installed the one from the GS F and has improved it a bit. The more drastic improvements would be going with FIGs or RR Racing but some say that these can introduce more NVH - I wanted to keep mine as close to OEM riding quality. There is no question that lowering the car will make it handle even better
07-13-22, 08:22 AM
#11
Pole Position
^^ Changing the LCA bushings may help provide a more crisp handling response. The IS 500 uses the same LCA bushings as the IS 350, and I have installed the one from the GS F and has improved it a bit. The more drastic improvements would be going with FIGs or RR Racing but some say that these can introduce more NVH - I wanted to keep mine as close to OEM riding quality. There is no question that lowering the car will make it handle even better
The following users liked this post:
wthrman2 (07-13-22)
07-13-22, 11:29 AM
#12
Lead Lap
Yeah, the GS F LCA are a good compromise and maintaining the Lexus ride signature. It is not perfect but a step in the right direction and for 200 to 300 dollars including installation is not a deal breaker.
The following users liked this post:
Carolina50 (07-13-22)
07-13-22, 03:24 PM
#13
Intermediate
07-13-22, 05:53 PM
#14
Lead Lap
^^ Well, I tried ordering through Megazip but ran into an issue when they tried to verify my CC so I just got flustered and canceled the order and got them from the dealer since they would install them anyway. I paid about 100$ (Canadian) per unit but much cheaper via megazip (Thanks to Sasnuke for the tip) and then 1 hour of installation labor. The Lexus dealer hourly rate was about 20$ more than the Toyota dealer that installed them on my 2021 IS but overall, it was still cheap. You should be able to get these done for between 200-300$ all in especially in the US and if you order online, would be closer to the 200$ mark. They checked the alignment after but because it was so minor, they never charged me because I had ordered rims and other parts from them. Hope this helps.
The following users liked this post:
giS (07-13-22)
07-13-22, 06:12 PM
#15
Intermediate
^^ Well, I tried ordering through Megazip but ran into an issue when they tried to verify my CC so I just got flustered and canceled the order and got them from the dealer since they would install them anyway. I paid about 100$ (Canadian) per unit but much cheaper via megazip (Thanks to Sasnuke for the tip) and then 1 hour of installation labor. The Lexus dealer hourly rate was about 20$ more than the Toyota dealer that installed them on my 2021 IS but overall, it was still cheap. You should be able to get these done for between 200-300$ all in especially in the US and if you order online, would be closer to the 200$ mark. They checked the alignment after but because it was so minor, they never charged me because I had ordered rims and other parts from them. Hope this helps.
The following users liked this post:
wthrman2 (07-13-22)