Bow shackles when should they be replaced?

[tweak'e]

Remember, if you are pulling out a 2t vehicle with mud up to the bottom of its doors it will no longer only be 2 t of load on it. It will be closer to double it I reckon.

a whole lot more.
there is a chart around somewhere.
gives required pull for bogged to axle, bogged to chassis etc.
pull load required is often right up to the max of most 4x4 straps.

 

[Stevo_d40_05]

I'd love to know personally. It would be very interesting to have a printed copy in ya wagon just to be safe.