[arcticdude]

Joe,

Definitely Continental bags. I'm not finding any "R2N" designations on a Continental bag though.

Here's a decent site with a cross reference to Firestone and Goodyear:

https://www.mrostop.com/featured-product...over-chart

There's no R2N listed in the Continental column. There should be other numbers someplace. Hopefully having the Continental numbers off the cross-reference site will give you some extra info to get the right numbers off your bags.