I would like more info.

I'd like to know what tire you're considering that doesn't come in anything taller than a 65 series.

As others have pointed out, taller and skinnier is most often best in a winter tire. Tires with short aspect ratios make no sense for winter - snow tires don't handle for crap no matter what the aspect ratio.

Regardless, 175/65-15 is the wrong tire for a 240. The load rating is too light.

Sadly, there isn't much out there in a tall, skinny 15. Just isn't much call for it anymore.

If you insist on the 15's, I'd suggest the Nokian Hakka2 in a 195/65-15 - or you might try the new Nordman1 in that size.

But since tall/skinny is much more available in a 14, I'd really suggest you consider it.

The Hakka2 comes in a 175/80-14 with an 88Q load rating. A Canada-spec '81 244DL came with 175R14 stock, so the size is almost dead on.

Stud those 2s, and you'll be unstoppable.
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'73 142, '75 242, '75 245, '80 245, '83 244, '86 244, '87 745T, 92 244 (for sale)