I just installed my Kw coilover yesterday. But for some reason, the rear height for both side is different. I need to adjust the left rear a lot higher in order to match the right rear height. Anyone has this problem??

 

after your car is lowered, you can not adjust your car using standard computerized machines. Having said that, you will need to take your car to a specialist. If you want all four wheels to align, balance, and perform correctly. I took my G37S coupe to a specialist who performs alignment, balance, and adjusts coilovers all manually. I have taken my G37 to various places, which aligns the car using standard computer alignment system. With no success. If you are in the Southern California Area I can introduce the person I took my car to repair. I highly recommend. Since than I had no issues with alignment, nor my coilovers.

 

I dont think he was asking about alignment, but just adjusting the height in general. I think this is normal for most lowering setups. One possibility is it could be due to a person sitting on the driver side more often than the passenger side, causing the left to settle a little more than the right. This would result in needing to raise the left side coil higher than the right to get the overal ride height equal.