What might be this gummy substance be? Very difficult to remove. Not sure if related but around the same time that this appeared, also noticed a weird sound, like metal wrench being dropped when rolling forward out of the garage. Not sure if related but sometimes there’s a clicking sound from the driver’s side front wheel when turning left at slow speeds ~ less than 10 mph.

 

Front or and drive? Bad cv joint will make those sounds.

 

rwd. I was thinking struts leaking? Or something with the driveshaft? 2015 but less than 60k miles. 😟

 

What is above that area while inside and while exiting the garage? Garage door opener, or anything else mechanical or chemical?

 

and I would then check your front brakes for that sound knowing you are not AWD.