Hey,
Most rubber tracks last around 800 - 1,200 hours, but honestly it depends a lot on terrain and how you run the machine.. keeping proper tension and cleaning them regularly makes a big difference.
Real talk:
Sharp rocks + spinning = kills tracks fast
Proper tension + clean undercarriage = longer life
A good set of rubber tracks should usually last well over 1,000 hours if the undercarriage is in good shape. If you're only getting around 600 hours, I'd check track tension, rollers, and sprockets too.