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I want to drop my is300 1.5", I'm tired of the stock suspesion, with 80,000mi my factory stock springs/struts don't ride as nice as they used to. I'm considering a set of coilovers for my is300. Is it true that you are better off purchasing a set of coilovers versus replacing the springs/struts? I hear that coilovers perform better. I never plan on autocrossing or racing my car, its simply a daily driver. Is it worth it? Will they really handle better? Do I need a camber kit? Anyone recommend a certain brand that is less than $1000?
If you guys are considering coilovers you should really consider looking into the BC Racing coilovers.
Compared to most of the cheaper coilovers, BCR coilovers have bigger internals, beefier shock bodies, locking lower rings (so the height adjustment rings don't work loose), and a better damping curve. They end up being a lot more compliant over rough surfaces. And they tend to last longer.
Overall the BCR coilovers are just a nicer piece, for just a bit more money.
Bigger internals means more surface area for the shim stacks and valves, which leads to a smoother ride and better tuning of damping. The larger shock bodies means more room for the internals and a stiffer cartirdge, which means it will hold up to much more abuse. The BCR coilovers also come with a coarser thread, so you can adjust ride height easier and quickly.
Feel free to PM us with any inquiries. I have personally run BCR's on 3 of my vehicles and the CMS STi runs a BCR ER series.
Also FYI - Pillowball bearings will provide a more direct and solid feeling in your suspension but they will also make the ride a bit more harsh and transfer more noise and vibration. A lot of Lexus owners like erring on the side of comfort. So BCR provides the option of pillowball OR rubber mounts. Most other companies don't.
You have adjustability with coilovers, that is the main benefit. They, typically, will also be desidned for, at minimal, sport driving. If you were going to track I would say not to cheap out on these. For your application Tein SS or basic, Tunabe, Stance or BC are all great options. These will not be comfortable by comparison to your stock set-up but it will look mean.
If all you want is 1.5 I would go with an eibach pro kit and a set of comfortable shocks as this will make your car quite a bit stiffer no matter which route you choose.