In my experience, TR will always stretch out when you wear it.
for stretch TR - it will only stretch out a little bit, and if you dry them, they will shrink back to their regular size or maybe a tiny bit smaller, but will stretch back out when you wear them.
for rigid TR - these will stretch out significantly when you wear them. If you dry them they will shrink pretty much back to their original size but they stretch back out quickly when worn.
For either, if you...