I don't get that mild steering wheel vibration at 40mph-75mph. I believe its from the axles being a tad too long.
Anyone want an '04 blk/blk leather int. MCS. Its for sale.

 

What were you running before? Did you put it back to stock? What is your aprox ride height?

 

its stock ride height now. i had the same problem with my civic when i first did a swap. I used a tad bit longer axle. When the car was at stock height it was fine. But as soon as i lowered it. I ran into axle problems. So i had to shorten it.

 

I just think with a shorter axles. Vibration would be gone. And one thing i notice is on the 2002-up honda civic hatchback/ and RSX. When installing lowering springs. i have to support the whole steering knuckle with a jackstand. if i don't, the axles would pop out from the inner joint. And when i lower my cooper. i just let the whole unit hang. And I can pull and tug on the hub and the inner axle would not pop out of the joint.

I wouldn't recommend anyone doing this. If it does pop out, the whole axle would have to come out and realign the bearings to the cup. pretty messy job.

 

Did you replace the entire axles or just the springs?

 

I just put my car back to stock suspension since i'm trying to sell it. I would experiment with the axles, but i don't want to work on the car(kinda lazy).