Mr. TuffyE-Fat Bike Tire Liner - 20/26/27.5 x 4.1 Inch - 5.0 Inch Teal - MRT4XL-E

Please choose these over tannus if you have a fat tire bike. So much better. Tannus and fat bikes do not mix, nothing but flats for me. These are amazing!

needs more exacting instructions over lap or cutting of the liner not clear. I left overlap of liner... rolled lumpy. Bike tech said the cutting of the over lap causes liner to pinch tube and causing flat. How do you approach this issue? why is this still an issue?

Great stuff to avoid getting flats,now if you like to ride over nails then I recommend you ride it on your rims.

Got a 2 pack of liners for 26x4.5 tires in an e-bike. 2 problems. E-bike liners have double stick tape to help keep the liner in place. The tape itself separates between the adhesive sides. Meaning when you peel the backing off the adhesive rips off with it leaving foam that won’t stick. About 70 percent of the tape is damaged. There are far better options for double stick tape that would do better than this. Change it. It’s useless otherwise.Problem 2. It does not cover the tube for the diameter listed on the box. Was a foot 12 inches short in fact. So we took the liner that would be for the other tire and cut it in half to basically splice/bridge the gap to protect the entire inner tube. We effectively got one and a half tires coverage. Not two. We got ripped. Not what we paid for. Tuffys needs a tape measure and better double stick tape. Then it will be great. Will they do it?

Have not got a flat in the last 15 min