Rear flat tires

[Monk]

Has anyone had times where tires lose only 1-2 lbs at night and say every month both back go completely flat.?

I can't see any tire leak as seems great for weeks....then once a month or couple months goes flat ass to ground,

Once a year ago I came home ran in had a shower walked out and was flat in rear then after i pumped perfect for a long while...

Would this be a cits valve issue? I cleaned the middle deflate valve and air tool oiled it...lol air stem was so stuck broke the npt brass pipe , (what a pain to fix)

Should I clean out those other two valves? Lol I'm still tweeking over that deflate breaking nipple pipe Episode. Hehe

[whitehumh2]

I think you need to replace your CTIS to hub seals. 1 or both of them are probably done. They normally don't leak unless you park in exactly the right spot and then they drop real fast! You should be able to hear it in the snorkel and vent lines

[Roy]

It would be a good idea to clean the other two valves out as well. Check for the faint sound coming out of the snorkel. this is where all the vent lines breathe from / to.