Fat Bike Tire Liner, Bicycle Tube Flat Protector Compatible with 20"/24"/26"/27.5/29"

This thing is tough. I cut a swatch out and tried to press a nail through. I had a very hard time even twisting it. the installation is a bit tricky. deflate the tire but not all the way. it should have a quarter inch between the tire and tube. Warm the lining up slightly. this will help with sliding it in. You can even use some baby powder inside the wheel if you are having a hard time sliding it in. It will want to twist on you. just keep feeding it slightly about 1/4 of the way around the tire. go back and tuck the first section inside. keep preparing until you have it all the way slid into the tire.

Very good product it works very well, but it is definitely not a one-man job. I had to buy some glue to glue it to the inside of the tire then I put another protector that is called. Tannus Armour Tire Insert Then I put the tire back on the rim then I put the tube in install the rest of the way pumped it up and have not had a flat tire since hopefully this is helped somebody

I have brand name tire liners in another bike. They work great and have lasted a long time, sometimes years. These are cheap crap. They are too thin to stop even thorns from going through and puncturing tubes. They are very difficult to place in the tire and they move excessively after being installed. I would suggest considering these a great way to throw away your money. I would strongly suggest NOT buying these.

Update..make sure you round the corners on the liners they will pop your innertubes i had 3 flattires in 2 weeks and could not figure out why.i noticed it was always about half way up the side of tube same spot all 3 times.finally i notice it was right where the liners slightly overlapped and the pointy edgehad poked a hole in tube.trimmed the edges and been flat free ever since..Very easy to install and gives you piece of mind.made of very tough material.5 of 5 for me.a few things you need to know.first install with the curl of material down this will keep it fromrolling up as you go around inside of tire.then insert innertube with enough air to hold linerin place (just enough to hold shape) then install on rim and "do not" overlap liner more than an inch or so especially with a ebike (because of high speed) as it will throw off the balance of your tire.found that last one out the hard way.

Tested their puncture resistance before installing. It took a lot of pressure to pierce with a sharp scribing tool.Length was ideal for a 26" tire with a little overlap.Installation was a little tricky. What worked well was to deflate the tires just enough to provide working room. Separated both sides of the tire from the rim and worked both sides to center the liner inside the tire.

No flats! Rode through iron horse trail path without getting a single flat. Plucked numerous thorns out after ride and have not lost any air pressure.

Have these installed... pain in the rear to keep them centered and they have shifted while filling. Have had 3 flats in the middle of my tires with these. Tannus are far better and no hassle. More expensive, but really worth it over these. Even get some tire wobble using these. Plus they are an absolute pain to install because they have NO curve to them. Would not recommend.

I just wanted to give my 2 cents to the reviews saying installation is difficult, and add my own solution - with a concern. The biggest problem is the liner's refusal to stay centered in the tire as you insert it. After a little fiddling, I found that flipping the liner so that its natural concavity works WITH the tire (with its internal curvature) made things easier. I also stopped concerning myself with the liner refusing to stay centered in the tire; focusing instead on ensuring that the tube sits properly within the tire, then making sure the bead seam is consistent and well seated as I completed inflation.The concern: I encourage the use of tire liners, but this s my first 3-inch wide liner. What I'm worried about (I'm riding on hybrid trail, not "fat," tires) is whether or not sharp and/or exaggerated leaning when cornering will cause the tube and liner to "roll." (Exactly the sort of stability you want when making quick maneuvers!) I've attempted to see if rolling would happen. But at 65, I'd rather be embarrassed by a real accident than a self-manufactured one LOL. Has anyone experienced this situation?