Quick question about Lexus Roll center adjustters (RCA)

Do RCA's generally add negative camber? or reduce it?

Also, they they increase or decrease the amount of clearance for the upper "A" arm and wheel well?

This is on a 3GS, if that matters.

Any input would be appreciated. Thank you

it increses the neg camber and its got nothing to do with the upper arm clearance what it does is it pushes it even further higher then stock the only thing u can do to fix that is to raise your car, chop ur knukle arms or drill out a hole ontop of your wheel arch so the top of your a arm can pop in/out :)

Thanks for the reply. So if they push the arm up further, doesnt that mean less clearance?

Yes less room cuz the RCA is forcing your arm higher then it was originally designed for

the amount of negative camber gained by an rca is marginal (varies by ride height). a camber adapter, which is basically an offset rca, increases negative camber (varies by offset of adapter). both will allow the car to go lower while allowing less fuca clearance (varies by rca/adapter thickness).