All the worry would be about ice. If there is ice then stages get cancelled, as they don’t have the tyres for it.
I’m sure there won’t be any issues as others have commented.
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Would be kinda silly to cancel a stage because of snow, when you think about Monte Carlo.
Unless there are steep uphill or downhill section that just can't be done with slicks, i don't see any problem. They will just need to take it slow.
The only issue is that it will create very changing conditions, fucking over some drivers because they have to clean.
So we have done the recce by now, bit of snow in some places but this won't last for long. Otherwise, conditions are changing a lot. Really really slippery forests with deep cuts and standing water but also quite dry section between the fields.
Recce pics from Official WRC
https://pbs.twimg.com/media/GLWreq8X...pg&name=medium
https://pbs.twimg.com/media/GLWreq_W...pg&name=medium
Tyres available for Rally1:
235/40-18 - PZERO WRC HA (Hard)
235/40-18 - PZERO WRC SA (Soft)
235/40-18 - WRC RWB (Wet)