Tannus Armour Tire Insert – Puncture-Proof Bike Tube Protector for Gravel, Fat, and E-Bikes – No Flat Liner Stops Thorns, Goatheads & More

This insert has performed very well in the month I’ve had it. In the 6 months I’ve had my bike I’ve had at least 7 flats and most were from little pieces of metal from the street cleaners bristles and small glass shards. All would barely break through the tire but with the weight on the back tire they’d cause a flat. Always the back; insert angry face!! The second day it was in I pulled a staple that went straight into the tire out and the day after that a 3/4” finishing nail that went in at a slight angle. Neither punctured the tube and what I would’ve spent on replacement tubes has already covered a decent portion of the cost of this. I can still find glass shards and fine metal pieces but I’ve stopped even looking after seeing it take the nail and not go flat. I’ve seen reviews about this not having instructions and that’s wrong. They’re literally embossed on the side of the insert. It’s a few simple steps; deflate tube, clean insert, put insert into tire, tire on bike, re-inflate. But honestly if you need more that that you probably shouldn’t be working on your own bike imho. The only thing that wasn’t stated was that you may have to trim this if your size falls within a range like mine 3-4” insert for a 3” tire, but that’s kinda common sense and if you held the insert against your tire without trimming you’d see it’s way over sized. For this I put the whole insert into the tire, traced where it touched the edge of the tire and then cut 1/8” inside that line to give the tire bead space to seat in the rim. Like magic the amount I cut off was very close to 1” Lastly I’d like to point out something about sizing. The 20x3” tube I first put on which is my bikes size was too big. I felt this as I put it on. There’s just too much rubber when this insert takes up 1/3 of the space in the tire. I did my best to stretch it out and have it fit smoothly in the tire but there seemed to always be a spot it bunched. Plus I couldn’t really pump more than 20psi into the tire despite the bike calling for a min of 24. I should’ve trusted my instincts but recall reading another review saying someone was a clown for saying you need to size the tube down. Well last week I got a flat, was still able to ride to a safe place to change as the insert doesn’t put your rim on the road and the flat was caused by a small pinch in the tube. Not even against the rim just a tiny fold in the center of the tube where it sat in the insert. I got the next partial size tube smaller; 2.75-3.3” and it fits much better and took the correct psi.

My son has gotten so many flats on his e-bikes. This is an excellent device that reduces punctures. I wish I had purchased and installed after the first flat! This is a must have for e-bikes. If you are about to fix a flat on your e-bike, install one of these!

Second one I’d bought for different bikes. Both over a year now. No flats and tires hardly ever go low. Not easy to install. But with patience it went well. Ready to buy another for the front tires now. If you hate flats. This is the best option out there.

Hopefully it has a hard center to stop any puncture to the tube. Engineer that designed this obviously hasn’t tried the product. Sides need to be an inch shorter for easier install. I don’t need the liner to wrap into the rim. Barely need it to cover the side walls. They’d save manufacturing costs if they shaved down the side wall part. I’ve replaced numerous inner tubes . By shaving down the sides it would make things overall better. Will update in a few months since this bike is used regularly to do local errands.

DO NOT order this product if you think you are getting two (2) tire inserts. I made the mistake of ordering this with the idea I was getting two tire inserts. What a shock when I found out I only got one for $75+ dollars. What a ripoff! For something that probably costs less than $1 in materials(?) My fault for not making sure of what I was getting. Certainly NOT worth it, especially when tire Slime will do the job for most incidents. I wish I could give a negative number for my review. I will NEVER consider buying anything from Tannus Armour again!

Perfect fit. Easy installation. The value of price vs elimination of flat tires is priceless. I bought one to test. Two days after product test, I order the second. Fast order fill and shipping. Quality product. Concept is genius. Very pleased. Thank you Tannus. You have taken my cycling to a new level of enjoyment.

No better protection for daily commute 5Star

De fácil colocación en pavimento binen el funcionamiento no e probado en terracerías

Amazing — expensive but worth it !

Patience and gentility the ‘KEY! Hang and let the contours find their shape. Using ‘strong tire spoons to withdraw tire bead. Reapply using ‘baby powder(use limited amount) as lubricant on installing and letting Innertube and Armour find their positions…rotating rim and ‘insides to evenly distribute. Slowly inflate and deflate tube to let all components finds their positive position’s. Final inflate to * 1/4 less recommended inflate. Ride and test for desired solution!

I purchased one insert as a trial since reviews were mixed as to how easy it would be to fit and what the ride would be like. In the event the fit was easy with my Schwalbe Smart Sam, Active, 2.60 tyres. Riding on the road I noticed no difference; over roots,, etc. it feels more comfortable. I've consequently ordered a second.