You might be surprised how long they least, even being a weather checked. You could drain them & put in a tube. Will likely Las a VERY long time that way without spilling any juice. Might not be the prettiest, but will be the cheapest.
They are tubed. (as were the old ones)
As I approach 80 I just do not want a flat at -32 deg in the cold of winter so I was trying to be preventative.
Now really not wanting a mid winter failure I (BRR) wish to avoid a possible problem so I'll gladly accept a rough foam tired ride.
After all of that recently I came from doing my daughter's drive to finding my rear very deflated.
I pumped it up and after 6 snow events it has retained pressure just fine. Go figure.
That rear had even leaked ballast onto he snow. Only thing I can guess is that the ballast (beet juice) has sealed up whatever had caused the leak. Go figure.
I have had to do cold winter repairs in the past at real cold temps and did not enjoy that. (like changing a block heater at -30) No thanks! I won,but my fingers and toes lost out!
Shucks I don't take any chances, I leave my block heater on all winter! **** the hydro bill as long as it starts.
The local snow contractor would cost me $1000K to do my drive (if and when he gets around to me) so the hydro cost is acceptable.
Ain't country living great? OK the air is clear, fauna and flora interesting and noise pollution non existant. (as long as hydro power continues) internet is another topic. LOL.