Originally Posted by
jrobe
If I had to buy a trainer tire (which I wouldn't because I would have saved my old worn out tires), I would buy the cheapest tire I could find at the LBS or Walmart and use it till it was wore down to the threads (probably a whole winter of daily riding). By then, I would have a worn out tire to start using.
You'd be surprised how fast the tire wears down if you using it regularly. I've never let mine get down to the point where it 'pops' on the trainer, but I've had tires wear down enough to be nonfunctional on the road (you get repeated flats since the tire casing isn't strong enough) within 6 weeks of regular use.