I just installed my bc coilovers on my 07 is350 and when I went to adjust them with the spanner wrenches they were extremely hard to turn and made a deep squeal noise. am I doing something wrong? Or is something wrong with the coilovers. They’re brand new and didn’t have anything in the threads

 

what were you doing when it was making a squealing noise? Does it make it on loosening and tightening? were you changing the preload? maybe grease the threads a bit to make it easier to turn?

 

Upper mount can be sometimes tight to turn and makes noise when adjusting, id say its normal. Later they loosen up a bit. Mine were like that.

 

Were you trying to turn BOTH lower perches at the same time? You're only to turn one at a time.