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foam filling small tires

M

Mike M

Well-known Member
I thought I read on here that someone had foam filled their own tires using the spray cans of insulating foam. If you have how did you do it ? I'd think it would be hard to just shoot in there in the valve stem because you would need a way for the air to escape would you not ?
I have some small wheels on my mower that seep out the slime sealant over time thru small punctures. Maybe they just need more slime ?
 
When I had punctures in my loader tractor before slime I bought the stuff at Kmart and plugged the puncture. I had several cans per tire. When I spotted a leak I plugged it. It looked like a knobby tire before I put on new tires.
 
I tried the insulating foam once in a wheelbarrow tire. It didn't work. The foam is not stiff enough. Real tire foam cures into more of a rubbery with bubbles type of substance.
 
I agree. Watch the videos on U-tube and they go through a how to do it act. You need to drill holes in your tire so the foam can air cure. If you do not drill holes it will stay sqwishy and be a real mess when you get ticked off and just replace the tire. Real tire foam is a two part mix. It will expand and cure where ever you squirt it.
 
put all the slime in them you want to, Its just going to continue to seep out. spray foam does not work. take them to a local farm tire shop, not wall mart or sams club and have someone send them in for you. Takes about a week be advised they will be very heavy when you get them back.
 
I've got 2 front tires off the zero turn in the tire shop now getting foam filled. Going to cost $35 each. These are heavy duty wheels for a commercial mower.

The tires need to be clean on the inside. If they have slime in them, they will have to take them of and clean them. If they are damaged or rotten, best replace them, not waste the foam money on something temporary.

They drill a hole in the tire opposite from the stem, shoot it in through the valve stem until it comes out the hole. It's a simi-hard black foam rubber, much different than expanding foam.

On the home mower, I went to Northern Tool and bought some flat free tires and wheels for the front, about the same price. They have worked well for many years now.
 
Sounds like a trip to Glens Surplus in Shelby Ohio is in my future to just get some new aftermarket ones. Maybe the $25.00 ea. ones will fit instead of the $ 50.00 ea. ones.
 
Mike M
When the kids were small they had a plastic ball bat. It cracked so I drilled a hole at each end and fill it with foam. The foam in the middle never cured. I'm thinking it may need air to dry, not sure.

Both HF and Mendard sell hard rubber wheelbarrow tires, no flats ever I put a set on pressure washer and another set on my home made boat trailer, which only gets pulled behind mule to the lake. No high speeds.
 
Check with your local forklift and/or forklift tire shop. Foam-filling forklift tires is VERY common. Typically, our tire man will insert foam on Friday, tires must sit flat on their sides unitl Monday, and can be installed late Monday or Tuesday. This is up to 14.00 x 20 forklift tires --- probably way bigger than what you are talking about.
 
I have an old Bolens garden tractor with tiller and mower I bought about 1978. There was an old over grown farmstead where I put
my garden got lots of flat tires and front end was light for the tiller. took the front to work and our tire man took the fronts to
shop and pumped them full of silicon, added nice weight to front and haven't had a flat since still use the tiller all the time
 

I've filled a couple of small tires with the triple expanding foam. Just shot it in the through the valve, put the valve core in and aired it up. Foam started coming out the holes before long. They are still up today. But this was close to 10 years back and I used the stuff that really expands, not the non-expanding or minimal expanding stuff.
 
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