I just measured the tread remaining on my PR2 front and it has about 1/16th of an inch of depth left. (the rear was toast, cord showing). The new PR3 that arrived today measures a little over 5/32nd of an inch. Would y'all trust the old PR2 for a few more local miles (avoiding rain) or just go ahead and chuck both of the PR2s and spoon the PR3s on? Yeah, I'm cheap. Retired, fixed income, all that. .