OMG.. searched for "tripping over wheel trim" and got your guys. Yes, this past weekend was out for a 10 miler and at 6.5 miles my ankles were trapped ("foot-cuffed" I guess) and fell face forward. Luckily I had some thin gloves on and my hands were only mildly scraped with blood. Hit my chin a little but thank God I braced myself with my hands... Worst part was my left bicep hurt for a while from the impact of bracing myself. My knee was banged up a little; but was able to finish my run. A very rare occurance as you would have to hit the wheel trim on the right spot to flip it up... but looks like you can google anything and find commonalities these days. Always good to stay alert out on the roads. Best to all that had this happen.
I did exactly the same as this. I was only a couple of hundred meters into my run at a point where I have to run in the road around a smallish roundabout. Without any warning I found myself laying in the gutter with cars going past me; bloody knee and palms. Next to me was one of these wheel trim ring which I'm guessing, as one foot flipped it up the other one followed it into the ring. Jumped up with the adrenaline pumping and finished a 10 mile run. Was quite a shock though.
I had a 405 for 3 years when it steamed up a bit and then was behaving erratically. Spoke to Garmin explaining I'd only ever used it for running. They immediately sent me another one which was a refurb. This had a problem after only a couple of days. They then sent me a brand new boxed one with HRM; no charge. I've since bought a 410 as my wife was started using the 405. I've had the 410 for a couple of years now with no issues and my 15 year old son is now using the 405 on which the strap parted company with the watch; breaking right through the joining pin. I super glued it and it's been fine for about 3 weeks now.
HR monitors have not been great after battery changes, especially the latest ones with ridiculously small screws which need taking out. Both times I've had my HR monitor replaced free of charge. You have to speak nicely with them and they're very helpful.
I suppose I'll eventually have to buy a later model but do feel I've had my money's worth out of the 2 units I've paid for over a period of about 6-7 years.