sorry boys. dumb question time. in regards to the strap that goes to your wheel, does't this defeat the purpose if your going to change a tyre? probably a simple answer to this but couldn't get my head around it.
Yep it would if used for that purpose... but IMHO people who use a Hi lift to jack a vehicle to change a wheel have either a death wish or want to present the paramedics who attend a new and unusal challenge.
Hi-lifts are first and foremost a recovery tool, and a pretty dangerous one at that as they are inherently unstable. The plus side is they are pretty versatile if shown how to use them correctly.
Probably (at an absolute last resort) the safest way to change a tyre would be to use a Wheel Strap to raise the vehicle the minimum amount (as that negates the suspension travel) needed to get something under the axle such as a log or whatever and drop the vehicle, remove the jack, remove/replace wheel, refit the jack and lift it a few Cm's and pull the support out and lower.
Whatever anyone does please NEVER get within range of the Jack post or handle, under the vehicle or between a vehicle and a tree/rock/bank if the vehicle is on a Hi-lift. When/If they topple off the Hi-lift the vehicle can easily move a half metre or more, seen it happen a couple of times over the years and it is pretty goddam scary when it happens