TannusArmour Bundle 2 Pack No-Flat Bicycle Tire Inserts, Puncture Proof Bike Tube Protector, Stops Flats from Thorns and Goatheads

Contrary to some other comments, I found the installation of the Tannus 26x4 inserts was a breeze and went smoothly. I consider myself an average DIY skilled person, and I didn't need any extra tools. I simply followed the provided instructions and it took about 10-15 mins per tire, once the rims were removed from the bike, to install and inflate (using an air compressor).Tip: I found putting a small amount of air into the inner tube (just enough for the tube to have shape) prior to inserting under the Armour made the process easier.I installed the Tannus Armour inside 1 month old Schwalbe Jumbo Jim Addix Speedgrip tires for my e-bike. These hard to find Schwalbe tires are fast rolling, lightweight and relatively thin, so I wanted to have the extra protection since I frequently venture into isolated areas, as well as occasional highway trips into the city that is 45kms away.I run the tires at a higher psi (28-30) when I travel on longer trips on pavement, and I noticed there is little difference in the ride with the inserts. When I trail ride I usually run at around 15 psi depending on the conditions, and noticed that the ride is a little firmer than before, but the traction and handing is pretty much the same. I have yet to try them in mud or snow at an ever lower psi (8) and will have to wait until the fall/winter.It's too early to speak of the puncture protection, but with my new Schwalbe "snakeskin" tires being so thin, I definitely have a much higher level of confidence in avoiding flats. I will update this review should anything change.

Con una anchura de 50mm, es imposible montarlas aún en llanta 67 (26x2.35) por lo que tuve que devolver. Las rojas (1.5-1.95) quedaron muy bien en otra bici, por lo que compré mejor esa medida, esperando queden bien en esta otra bici. Fuera de este inconveniente, las que ya uso en otra bici, cumplen su cometido de no pincharse, aunque si hay que considerar un aumento del peso total de la bici y una sensación algo distinta a las normales, particularmente en calles empedradas.

This kit is a good value as it provides both the armour and the smaller inner tube necessary for successful mounting. You can't use the original inner tube as that is too large to use with the armour insert unless you upsize the tire size. Mounting these things is pretty straight forward. I had to trim the armour per directions in Step 1 due to my tire size being the smaller of what is supported by the kit. I used Fiskars Micro-Tip Pruner Non-Stick snips for this and followed the countour identified as needing to be removed. Steps 2 thru 4 are pretty straight forward until you reach step 5b. This is the mounting of the 2nd tire bead onto the rim. Without specialized tools like SHWJ 4PCS Bike Tire levers available in Amazon, this is PAINFUL! The tire levers simplify this step significantly and I highly recommend that you use these or similar tools to help with this step. Otherwise you're going to get super frustrated just like some of the other reviewers have documented. Without these levers, it took me over 1 hour of frustration, pain in my fingers and scratching my black rims to get one of these installed. With the levers, it took a total of 15 minutes if not less. Don't install these without tools!Post install, I inflated to 45 psi and took out bike for a test ride. I can't really say that things feel different but installation of these gives me piece of mind that I won't get stuck somewhere with a flat.

Satisfaction. Recommended no more flat

This insert is very light, and fits snug on rim,. Upon installation make sure the valve stem of the tube is straight, because once it's in it's nearly impossible to adjust, like I said snug fit on rim. Fill tube and release air a couple of times to adjust proper fit of tube inside the tire to avoid a bunch up or ripple on sidewall. Product is working well for me, with a smooth ride.