So my uber-low mile S has stared side window squeaking on the way up. Is there a place to use some sort of lube on these-rubber track perhaps?

 

A carefull wipe of the tracks with a clean rag is what I do to get the gunk out. NOTHING rash, just wipe around the track, and its good to go.

Then a quick spray of CRC Silicon Spray finishes the task.

A quick spray on the underside of the seatbelts keeps them flowing smooth also.

 

Many thanks!