2000 Kodiak rear tire pressure

[Black Bear]

My 2000 Kodiak 4X4 rear tires lose tire pressure when it sits in my garage. Any idea why? I re-inflate back to the specified 3.6 pounds. The rims do not look bent and suspect they are not. Never a problem with the front tires. Confused! Thanks in advance!

[sledhead]

air temp will cause air pressure to drop or go up depending on the temp. But most likely you have bead leaks or the shreader valve in the valve stem is loose. Tighten them up and the get som soapy water and cover the tires in it. look or bubbles.