Widewheel suspension is Squeaking

The best way to get rid of the squeaking noise is by applying a little bit of grease or WD40 on the suspension springs. We have come across a few cases where the springs got wet or moist and developed a little oxidation that then caused the squeaking.  

If there is squeaking in front, take the front wheel out and detach the front mud-guard to access the springs. Apply WD40 or other grease directly on the spring coils. Have a look at this video (skip to 5:50): 

https://drive.google.com/file/d/1Aob-hqFrA5lfHgdcAaaHjLfK2Ln-5Sr5/view?usp=sharing

(you do not need to remove the arms)

The same with the rear springs - these are right accessible when removing the bottom cover:

Have a look at this picture