My newest bike is from the 80's and I know this might be strange but I am kinda confused with all the new stuff out there. I usually do not replace my inner tubes on my bikes till they are obviously old or with many patches and even then, hardly ever. But tiers have changed and so too tubes. Since I went to Touring Tires my incidents of flats is just about zero so on my bikes so I have some very, very old tubes and not so old tires.

So now days is it normal to replace the old tubes with new when replacing old with new tires?

I know its a simple question and may be I am just showing geriatric unsure-ness... Ha