Tire pressure 1psi loss/week normal?
Thread Starter
New Members
Joined: Apr 2013
Posts: 99
Likes: 0
From: San Francisco
My Ride: E60 545i
Tire pressure 1psi loss/week normal?
I'm running 20" tires and I noticed a slow loss of pressure. I pump the front tires to 40psi and in a little more than a month, they will drop to 35. This has happened a coupe times already. Is this rate of psi loss normal?
Administrator
Joined: Aug 2010
Posts: 3,485
Likes: 109
From: Fairfield County, CT
My Ride: 530xi
Model Year: 2007
Engine: N52
Is this happening with one tire, or all the tires? If all the tires, what width rim and tire are you running? Could be you have a bad fitment.
Thread Starter
New Members
Joined: Apr 2013
Posts: 99
Likes: 0
From: San Francisco
My Ride: E60 545i
20x8.5 and 20x10 20mm offset AVG wheels w/ 245/35/20 and 285/30/20 Sumitomo HTR Z III tires. Fitment should be spot on. This is happening to the two front tires. Setup is also fairly new (less than 6 months)
Senior Members
Joined: Apr 2009
Posts: 1,501
Likes: 0
From: Fremont/ San Francisco Ca
My Ride: 545 modded the F out
Either you have a hairline crack, bends in you front wheels or you have a bad bead seat on them. Being that you mentioned it only being less than 6 months I highly doubt your wheels a cracked unless you purposely look for potholes. 
Administrator
Joined: Aug 2010
Posts: 3,485
Likes: 109
From: Fairfield County, CT
My Ride: 530xi
Model Year: 2007
Engine: N52
Maybe remount the two front tires and see if the problem goes away?
Thread
Thread Starter
Forum
Replies
Last Post