Ok thnk u will keep that in mindHi,
As frequent traveler what I noticed now when they see that PR card is near to expiry they routed the passengers through the counters instead of letting them going straight out. Most probably immigration officer on the desk checks the number of days and if he satisfies then he let person get in Canada. I am saying this as when I entered last month in Canada the person standing after the PR cards machines looked at my PR card and routed me through the immigration counter. When I asked immigration officer why I have been routed this channel he said I don't know as I don't see any problem as still you have more than 2 years in expiry of your PR status which means usually they route the persons who are having less than 2 years on their cards. Two weeks after I went to USA and when I came back the officer just asked me where are you coming from and how many days you stayed outside and I told him from USA and 4 days then he let me in straight forward.
So its kind of tricky thing. I strongly recommend you to not to take this kind of risk as you may lose your PR.
Thanks..