When it's cold well below 60 rear tire pressure goes down, sometimes to about 37, slowly for days will go down to 33ish. pump it back up an ok. stays at 41 for weeks an even months. until next cold snap. then repeats. Had a flat dealer replaced rear tire. PSI stood at 42 for months until it got cold 59. went to 36. daily it slowly went down to 32. I understand cold brings it down an heat brings it up. but this gets me wtf. One question, on replacement wonder if dealer replaced valve? But if valve was leaking you would think in a few days/weeks it would go down (from cold start) from 42 to ??.