RR Racing USRS Install - anyone DIY w/o a lift?
12-24-17 | 05:39 AM
#16
Driver School Candidate
Joined: Apr 2010
Posts: 39
Likes: 2
From: LA
This was hands down the worst mod I've ever done to a car. The ride quality seriously sucked, UNLESS you were on an absolutely smooth road, and we know that's not going to be the case 90% of the time. Every little bump is very harsh, and don't get me started on all the creaks and rattles that started after the install. Thank god they went away after putting the stocks back on...
12-25-17 | 07:23 AM
#17
Thread Starter
Driver School Candidate
Joined: Dec 2014
Posts: 37
Likes: 3
From: Tennessee
This was hands down the worst mod I've ever done to a car. The ride quality seriously sucked, UNLESS you were on an absolutely smooth road, and we know that's not going to be the case 90% of the time. Every little bump is very harsh, and don't get me started on all the creaks and rattles that started after the install. Thank god they went away after putting the stocks back on...
12-26-17 | 10:17 AM
#18
Lexus Test Driver
Joined: Mar 2016
Posts: 8,851
Likes: 2,229
Or if you want the front tires to lasts you more than 25k.
I talked to 3 random (Yes random IS250/IS350 F sports) owners and they had no idea that they had inner front tire wear due to dynamic toe. I showed them the inner wear on their vehicle and all were showing metal tread, but the outside look perfectly new. And all of them have less than 30k miles. I'm actually surprise that dealer hasn't got sued for neglecting to mention the wear on the tire during the check up...
Anyway, this will fix that issue as well.
I talked to 3 random (Yes random IS250/IS350 F sports) owners and they had no idea that they had inner front tire wear due to dynamic toe. I showed them the inner wear on their vehicle and all were showing metal tread, but the outside look perfectly new. And all of them have less than 30k miles. I'm actually surprise that dealer hasn't got sued for neglecting to mention the wear on the tire during the check up...
Anyway, this will fix that issue as well.
30k is a LOT for this kind of car.
You also don't want your tires lasting too long because while you have tread, it'll be hard sun-beaten cracked tread. Causes its own set of problems.
Fast wear means you have fresh rubber.
Win/win/win.
12-26-17 | 10:20 AM
#19
Lexus Test Driver
Joined: Mar 2016
Posts: 8,851
Likes: 2,229
Your hard bushings may actually cause an accident on the street as any bump will upset your adhesion limits quicker, particularly in the rain. VSC won't save you in the more extreme circumstances.
12-26-17 | 07:17 PM
#20
Rookie
Joined: Jul 2017
Posts: 85
Likes: 7
From: CA
This was hands down the worst mod I've ever done to a car. The ride quality seriously sucked, UNLESS you were on an absolutely smooth road, and we know that's not going to be the case 90% of the time. Every little bump is very harsh, and don't get me started on all the creaks and rattles that started after the install. Thank god they went away after putting the stocks back on...
12-27-17 | 01:06 AM
#21
Instructor
Joined: Jul 2014
Posts: 974
Likes: 79
From: CA
It's not an issue. Performance sedan type cars tend to wear tires at about 20-25k miles. That's sought-after. I actually wish my tires wore faster. That's the mark of performance. If you want longevity, buy a Camry or Prius. Just understand tire wear comes w/ the territory. Ask any BMW 3 or 5 Series owner, particularly with sport package / sport alignment. BMW basically invented the elastic suspension model for sporty cars. Every sporty BMW=20k set of tires.
30k is a LOT for this kind of car.
You also don't want your tires lasting too long because while you have tread, it'll be hard sun-beaten cracked tread. Causes its own set of problems.
Fast wear means you have fresh rubber.
Win/win/win.
30k is a LOT for this kind of car.
You also don't want your tires lasting too long because while you have tread, it'll be hard sun-beaten cracked tread. Causes its own set of problems.
Fast wear means you have fresh rubber.
Win/win/win.
There is nothing “performance” about Lexus IS and it has no where close to having a sport aligment or suspension. If you bought an IS, especially your is200t, as a performance car then you’ve made a huge mistake.
Factory spec’ed aligment is completely opposite of what a sporty tuned alignment is. If anything it is made for stability, comfort and safety. And as same for the factory Lower Control Arm bushings which is made soft to reduce NVH (which causes the inner wear due excessive movement or compliance). Nothing to do with its “sporty” aligment since there is none.
You are generalizing the common alignment issues on other sporty car, this however is an isolated issue. I have and had several actual “sports” cars with none of this issue unless the alignment was set to negative toe which Factory spec’ed IS does not.
Factory spec’ed aligment is completely opposite of what a sporty tuned alignment is. If anything it is made for stability, comfort and safety. And as same for the factory Lower Control Arm bushings which is made soft to reduce NVH (which causes the inner wear due excessive movement or compliance). Nothing to do with its “sporty” aligment since there is none.
You are generalizing the common alignment issues on other sporty car, this however is an isolated issue. I have and had several actual “sports” cars with none of this issue unless the alignment was set to negative toe which Factory spec’ed IS does not.
Last edited by jkonquer; 12-27-17 at 01:25 AM.
04-14-21 | 11:39 AM
#22
This was hands down the worst mod I've ever done to a car. The ride quality seriously sucked, UNLESS you were on an absolutely smooth road, and we know that's not going to be the case 90% of the time. Every little bump is very harsh, and don't get me started on all the creaks and rattles that started after the install. Thank god they went away after putting the stocks back on...
Still trying to decide with the USRS street version which is an 88dur bushing or the Figs. I keep reading nothing but good reviews about Figs. And for something that isn't going to get tracked and mainly just want to make sure my tires on my RCF don't get destroyed makes me think that should be the route to go.
-Nigel
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