@SHERAN - how many of your drivers have experience in snow driving, across Turkey & CIS territories you will encounter snow [ slit ] from Mid November.
You shall focus upon a reinforced cabin cage more then the suspension, if your driving team have no past experience of driving on 'slit covered' highway. Front AMBER FOG lamp pair & one REAR amber lamp connected to Stop Lights are mandatory across Turkey & CIS highways for a Open bed vehicle of 1500 kgs capacity or more
before leaving PK flush & purge the domestic coolant from engine & cabin heater. TOP UP with the " antifreeze coolant "
if you have chalked out your route please share the screen capture via google maps / google earth