1) Remove the vacume pipe, start the car. The pipe should be sucking in air.
2) Drive over 4500 RPM and notice the intake sound.
They're the easiest way to check.
I saw this on my last visit to Lexus:
O/S/F lower suspension ball joint worn starting to lose grease recommend rechecking next service/mot
Wanted to confirm if these are the correct parts?
https://lexuspartsdirect.co.uk/product/lexus-is-f-front-ball-joint-o-s-f/
https://lexuspartsdirect.co.uk/product/lexus-is-f-front-ball-joint-n-s-f/
Thanks
Haven't heard of any long term problems, however it does drink A LOT more fuel - maybe it's me, my heavy right foot hearing the intake at 1800 rpm. It does make the intake very bass'y, certainly turns heads if you give it some beans.