I Do This For The Glory
Join Date: Dec 1999
Location: Nobleboro, Maine
Thanked 0 Times in 0 Posts
Re: Patching a torn sidewall
I posted this awhile ago, you might also try a search on the subject.
I patched a bias ply swamper on the sidewall. My swampers are 8 ply, and I have indavertently run them flat on trails, but they still look like they have air in them due to the stiff sidewalls. In fact, they're flat now, but they look like they have 20 psi of air in them, of course, there's no body on, so little weight.
I bought a set of 33" TSL's from a friend that totalled his jeep (ran OVER a Subaru, pics to be shown later). All of the tires had nice tread, but on closer inspection, one of them had a puncture on the sidewall, that was perpendicular to the rim and went to the bead (2" long). Not only to the bead, but once it hit it, it traveled along the bead, both directions, about 1 inch, looked like a triangle. I took it everywhere and everyone told me it was junk, wouldn't touch it for liability reasons. Since I had nothing to loose, I decided to experiment.
I got some 2 ply patches and glue from NAPA and went to work. I patched the inside and outside, scuffing the rubber, cleaning, and adhering the patch. No-go. Nothing held. So I mentioned this to my dad one day and he had a suggestion. He said he used to manage a tire shop in Mass when he was younger (40 years ago), and they patched all sorts of stuff. He said the key is a good glue and to scuff the tire really well to give the patch something to adhere to. I retried it, this time I bought NAPA's will-stick-to-anything tire cement and more 2 ply patches (4"x4"). I scuffed the inside and outside of the swamper using a 4.5" grinder (that worked well!) and walked the cleaner, then glue to it. I put a patch inside and out, tried to find an inner tube but couldn't. I sealed the tire to the rim with sealant and gave it a whirl. It held air!
I ran the tire for a year (almost exclusively off-road, but some road driving to the trails) and even aired it down to 4psi, which is what I wheel at. I have beaten the rims against rocks and they're pretty warped now. The outer patch is coming off, but it still holds air. In fact, many of the others don't anymore, they'll go flat in a week. I typically run the tire on the passengers rear due to less weight and a cop won't notice when I get stopped.
Give it a try, can't hurt. Good luck!
'81 CJ-8 Scrambled!
GM151/SM465/NP205 twinstick/7"Lift/33"TSL's/IHC D44's 4.10's Lock'd