my money is on that the tire guy didn't clean the rims with a wire wheel

 

My 2010 with 40k miles is loosing air in all 4 tires. I've had to wire brush the
bead surfaces and use sealer on them. I'm trying to get GM to replace the aluminum wheels. This normally does not occur until 8 or more years pass.

 

I'll bet there is a disclaimer for Aluminum wheels.

 

Aluminum wheels can corrode over time. Like previous reply, probably didn't clean bead surface.

 

40 years ago we would not mount a tire on "mags" or aluminum wheels without tubes, on account of comebacks.

 

I don't believe you gave us a complete story. Did you just buy the car, has the tires been leaking since 2010, or have you had tires recently replaced? Basically, when did this problem first arise? A little more info would help us offer more valid suggestions/opinions. You also didn't state how much air you need to replace. Is it drastic or minimal?

Note: have an '06 with the aluminum wheels and have not had to add more than a pound or 2 every month or so....depending on our temperature.

Which brings to mind......you do know that tire pressures will change with the fluctuation of ambient temperatures. Generally 1 pound for every 10 degrees up or down.

 

In the amount of time you posted on here and had to keep checking back for answers, you could have gone to the installer and back already and had your problem fixed.

Just my 2 cents............

 

Used that tank many times and it always showed where the leak was.