RV’s in BC are not required to carry chains, however you are required to have the correct tires on your vehicle depending on the month (s) of the years.
RV Chains.I’ve pulled a RV including 5th Wheels all over BC in the mountains, in the winter months and have never found that I needed tire chains.
I also snowmobile and I used to carry tire chains for the truck back in the day, however we were parking way up logging roads for days on end ( we had cabins ) with the possibility of no one plowing the road to where we parked. And then I can count on one hand how many times I used my chains.
I guess the question should be: what type of roads and conditions are you planing on traveling on and in?
Again as others have said the time of the year your traveling, if it snows, just sit a few days until Hwy maintenance clears the roads and or they clear up enough on their own to safely continue your journey.
Have fun on your trip.
PS; we got 6 inches of snow in the valley yesterday, and lots more up higher on the mountain passes....
Soup.