So with my last set of bc's, I just left it at factory preload out of the box and installed them. Just got another set today and I'm wondering if I should do what this thread (https://www.clublexus.com/forums/suspension-and-brakes/695290-bc-coilover-preload-setting.html) suggests and do 4mm. I had no clunking noise with my old set and no problems whatsoever and they rode comfortably. Also I hear that I should also let the coilover break in first before even lowering my car. So throw it on at whatever height is in the box and then adjust to your preferred height a week later? Let me know if this makes sense to you.

One other thing is the coilover is different compared to the vid since we don't have those camber adjustments on the top.

 

Bump this uppp urgent!!

 

I wish I could give you a definitive answer, but if you are really concerned, why wouldn't you just preload them? It is a relatively simple procedure, especially if they are not on the car already. With a simple search you'll find youtube clip to help DIY

 

The springs might settle a bit. If you plan to lower your car so much that you risk rubbing, then don't lower it quite that much to begin with. But I don't see any reason you couldn't start by lowering it some.

 

should come preloaded from the factory. just throw them on and adjust height

 

check the preload, two of my BC coils with the swift upgrade was not done.

like 1swt2gs said, then just adjust height.

 

What's the recommended preload. 4mm?

 

Thanks for the answers guys. Ya I tried to do my research since they' still haven't been installed so it'll be easy but information was very minimal. I'm putting the coilovers on tomorrow so that's why I'm sorta panicking. I will check all of them to make sure they're preloaded

 

I did a 4mm (the thickness of the spanner wrenches) just in case the factory preload wasn't correct. It was a peace of mind thing.

I watched the video on this thread to learn how to perform the preload. Super easy to do too.

https://www.clublexus.com/forums/sus...d-setting.html

Good luck!

 

Thanks I will use this later!

 

I also went with the two spanner wrench thickness preload.

 

Hahaha ya, I noticed your name on the other old thread. Kinda rough trying to compress a spring thats super stiff with pretty high rates (20k+). I managed to just get all of them preloaded to the same length, roughly 8in spring length compressed, if i remember correctly. No way I'm going to take off the preload to 0 and redo the tightening to check if it's 4mm LOL. Let's just hope this plays out after the install.

 

By the way, you're to set the preload while the coils are ON THE CAR.

 

Why would that be? Thinking about it, I don't see what difference it would make and it would be much easier to do before the coils go on the car.

 

With the coil body(top/bottom mounting points) being "locked" into place in the car's structure, the perches easily spin up along the threaded body with the spring until snug against the top mount. Once snug, only spin the top perch touching the spring until reaching a distance of two spanner wrenches thickness between the two perches. Then spin the lower perch up and "lock" it into place against the upper perch. This is all easier in my mind to do while on the car.