Jeff - I checked out the HH-66 and it says it is for vinyl. You sure it works on rubber?
Whelp here's what I can tell ya about HH-66. I bought it to patch a dinghy. It was patched before by somebody who used 'all the right stuff' two part based glues, etc. yet it's almost all unglued.. then I discovered a guy who has a U-tube video about patching em.. friggen outstanding!!.. So, I bought a can off of a web site that was less than e-bay's:
http://www.sailrite.com/ A sailboat place no less, that actually has it less than e-bay, go figure? . I know for the chemical odor of it that it's some type of rubber glue with an kicker, because rubber glue fails on vinyl. I haven't gotten around to patching the dinghy yet but have been gluing the crap out of everything plastic, and or vinyl I never could before, including rubber. . I have not even gone through as much detail that guy in the u-tube did to stick it, and yet it friggen works. Of course if I do get around to the dinghy it'll be his way or the highway, [grin]
I wish I had some of this stuff while my kids were growing up, cheap butt robotic toys with gears and levers falling apart I'd have to melt/weld back together.
Anyways, yes I have successfully glued 1 rubber item and actually just brushed it a little thick on 1 side and stuck it together for 24 hours to insure it's dry. . You're suppose to glue both sides and rest then stick it just like any other rubber glue.. I was being lazy cause it's not advertised to do it, but it did.
Obviously I can't guarantee it'll work for your old tire but shesh dang, this is the most amazing vinyl/rubber glue I've ever seen!
And tip,, if you use it; get the top of the can back on ASAP, it'll go a long, long way but can and will dry up if you're not very careful to keep it sealed. My can hasn't dried but, I can smell the chemicals and know all to well how those will set up inside the can and spoil my new found fun. .