I'm looking to replace my stock tires with a more commonly available size in another brand. 275/60/20 are seemingly not used on very many vehicles. I'm not looking for anything 'special', just an all season replacement.
recommendations for such a size? more easily acquired (and possibly cheaper)
275/60/20 is actually used on a lot of trucks and SUVs with stock 20" wheels. Obviously I'm not sure about Canada but down here that size is more than plentiful. The best tire I have found in that size as far as price and actual tire characteristics is the Cooper Discoverer H/T Plus. I run em' and love em'. Got my from Discount Tire Direct online.
I would guess that is the most popular 20" non-car tire followed closely by 275/55/20 which are one size shorter. If you go one size taller, you get into more expensive, more ply tires.