I picked up a Noble 4-row cultivator similar to the one pictured here.

I arranged it to work for 2-rows on a pretty narrow 25" row spacing. I pulled it through for the first round of cultivating sweet corn and it worked well.
Does anyone have any information on the Noble brand and where they went to? The gauge wheels are in pretty sad shape and I'd like to replace them. Some are split and starting to fall apart. Any ideas where I could get replacement tires? I've found 12x4 tires on the interweb but these seem to be smaller, the rim/wheel measures about 9"x4".
I did find KMC selling a very similar S-tine cultivator by searching TBN, but the mounting of the gauge wheel is a little different:
S-Tine Cultivator
Thanks for any information anyone can provide.

I arranged it to work for 2-rows on a pretty narrow 25" row spacing. I pulled it through for the first round of cultivating sweet corn and it worked well.
Does anyone have any information on the Noble brand and where they went to? The gauge wheels are in pretty sad shape and I'd like to replace them. Some are split and starting to fall apart. Any ideas where I could get replacement tires? I've found 12x4 tires on the interweb but these seem to be smaller, the rim/wheel measures about 9"x4".
I did find KMC selling a very similar S-tine cultivator by searching TBN, but the mounting of the gauge wheel is a little different:
S-Tine Cultivator
Thanks for any information anyone can provide.