I'm not certain what size fits a 6-12 tire. I have never tried to install one of my 23x8.5-12 chains sets on a 6-12 tire so I can't say if it will fit OK. I would think it would wrap to far down the sidewall.
Here's a place that sells tire chains that has them listed for 6-12 tires, that I found by searching hte internet. Don't know anything about them just found by searching.
6-12 Tire Chains
Here's a place that sells tire chains that has them listed for 6-12 tires, that I found by searching hte internet. Don't know anything about them just found by searching.
6-12 Tire Chains