This also makes for a rough ride. A normal tire flexes and gives you a softer ride. Foam won't let the tire flex.

I did this twice on my lawn trailer tires and wasted 2 cans of Great Stuff trying this. The foam never expanded or solidified. I contacted the manufacturer and was told that the product needs MOISTURE to work properly. On my third attempt, I injected about 2 ounces of water into each tire, spun the tires to distribute the water evenly, and then re-injeccted them with Great Stuff. This worked out very well and gave me great results! The manufacturer was adamant, however, that THIS IS NOT AN APPROVED USE OF THEIR PRODUCT.

Works good on the wheel barrel or a very small tire as far as writing tractors I guess you’ll have a hard road but hell I don’t know about you but I’m tired of putting air in tires

It can make yout tires heavy enough to tear up a mower driveline.

This wont hold up long term. It will destroy your tire. I did thi to my wheel barrow and the tire is pretty much falling apart now. You are better off using Slime. It will puncture proof your tire and keep it air filled and last alot longer.

Don't do this on a good tire, It doesn't last.

complete waste of time and money. does not work at all

Thumbs down for knowingly littering that foam…