Once you get them on you may want to consider getting additional heavy duty straps as well for added insurance. Tirechains.com sells them (here
). They call them "Extra Heavy Duty Tarp Straps". I just went to Home Depot or the like once I got my chains on and measured the size I needed. I think I bought like 24 of 'em. Planned to use 4-5 per tire and have a few for spares. Not so much for tensioning of the chains as the "cams" should do that but more to sort of hold things together should a link break
The rubber adjusters are 'ok' but a little flimsy IMO. I bought them as well and after seeing them I went out and bought the heavy duty straps...