I got a nail a few weeks back. Freaked out about it but have been riding on a plug since then and things have been "ok". Ive had it up to 140 (oh yea this is on the 636 too) and I trust it to an extent but plan on replacing it for the new season next year. Just want this plug to get me through October before she sits all winter and I need new tires anyway luckily. I plugged mine, waited 12 hours or so while monitoring psi, rode it, brought home and monitored psi another 24 hours just to make sure its stable. Damned if I trust it 100 though.