With a few threads around about re-groovable tires I did some research and looked at several tire manufacturers snow treads. I decided to take my Goodyear G647s to a local truck stop and discuss with them about regrooving my tires to give me a snow tread. This is what I ended up with.
This is look of original tires.
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This is what we ended up with on rear tires.
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Front tire design We only regrooved the two center lugs.
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This is look of original tires.

This is what we ended up with on rear tires.

Front tire design We only regrooved the two center lugs.

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