I was getting fed up with punctured tires every few weeks, especially with the rear tire, so I decided to try the Mr. Tuffy tire liners.Recently I punctured again on a Sunday morning ride after 33 and a half miles, 400 yards from home.No big deal, it was a short walk. Front tire was completely flat almost immediately.When I got home, I found 2 small, but very sharp thorns embedded in the tire casing which had pierced the inner tube in 2 places.Here's the thing. I found 2 more, longer thorns embedded in the rear tire which was protected by the Mr. Tuffy tire liner which I had installed the week before.The weird part is I wouldn't have checked either tire if the front tire hadn't punctured. I was running 700x25c Michelin Pro 4 endurance tires @ 82 psi. I would recommend the tires and the tire liners.

Great product does what is made to be.

-> Tires are more and more offered (when available) as solidly built (K-shield…) but an extra layer does not hurt.(+)EASY to install, even for a beginner. WELL-DESIGNED in 2 layers integrated, one in colored PVC (FLEXIBLE, with NON-CUTTING or brittle edges like some competitive products) and another seeming more rubber in the center, it seems to ensure that the product stays in place while ensuring a soft contact with the tube. At touch, the MATERIAL seems of a good quality, neither too hard not too soft.(-)- There is NO THIN STICKER that would guarantee that the product stays in place (well in the middle) so you have to mount it in a horizontal position and hope everything fine when is time of the vertical position (most of the time, for final assembly with the wheel). Some say that the tube could push the guard in a perfect mid, it may be true, but nothing says it and everything seems fine in the end.- The PRICE of the product is certainly still quite high, at the beginning of 2023, but after 4 tube replacements (10-15$ USD each) in 2022 I hope that it will save me some money and trouble too.Mention:The GOLD is close to the PURPLE (in size) but it seems that the latter would be a little larger (especially with a 700 x 35-38) to slightly cover the sides.QUALITY-PRICE ratio; (FOR NOW) GOOD ! Remains to be seen with time. * Various other products exist, but several seem to have only a lied impact when faced with different sharp objects. By carefully analyzing the reviews of other products, it seems that some even end up being brittle or even creating punctures by themselves with sharp edges or ending up causing wear on the tube. I haven't seen any such comments on Mr. Tuffy's seller page.I reserve the right to update this comment if there is a problem.Hoping that this little unbiased review will help you.

I've only had this product installed for 9 days at the time of this review, so take that for what it is worth. I watched the available video tutorials for several different methods of going about the installation. I own a mountain bike with 29 X 2.30 size tires, so I got the purple stuff. I saw one person install the liner by fastening it into the inside of the tire with gaffer's tape, another put the tire on first with a totally deflated tube, and then installed the liner. The liners come with a slight curve that makes it obvious which side faces the inner tire. The solution I finally settled on, was to first take the end with the tightest curl, then apply super glue to about 1 1/2" onto the side that faces the inside of the tire, then hold it down while spreading the glue out evenly, making sure that it was both straight & absolutely centered, before proceeding with installing the rest of the liner. One really good thing about the liners, is that to a large degree, they self-orientate, and to a large degree self center. I then installed a partially inflated tube in order to hold tire liner in place. The mistake I made, was that I did not go back in by hand to make absolutely sure it was centered, before reinstalling and inflating, & I suspect that the main reason I got a flat, is because it was not perfectly centered. I just got done patching the tube, and this time, went in and made sure the liner was absolutely dead center inside. The liners themselves are fairly thick, soft & pliable, made to stretch as air pressure is increased, and I would consider them quite durable, and I would expect them to last several tire changes, as my tires wear out. As an additional precaution, I plan on removing the valve stems in both tubes, and then installing Slime Tire Sealent in both the front & rear tubes for added protection against things like nails & sidewall flats. Also worth mentioning, I did not notice any difference in riding after installing the liners, compaired to before the liners were installed. I inflate to 40psi, as I do not like riding on low pressure tires, and being a mountain bike with 29' tires, I am still getting what I consider a smooth ride, with the most efficient roll. If I have further issues with the liners, I will give updates. I absolutely would purchase these tire liners again. I do hate fixing flat tires, and more so, I do not enjoy pushing a bike several miles home.Update:After going back in & making sure that the liners were dead center inside the tires, I have pulled well over a dozen goat head stickers(three pronged stickers that are all over my area, particularly off road, that can have very long & sharp prongs) out of both front & rear tires, both without any flats, or loss of tire pressure. I've looked for higher quality liners, before purchasing this product, but could not find any. I would, & will buy this product again if I get an additional bike, and I would recommend this product as a first line of defense against flats. Also, I would recommend the installation procedure I used, however, I would be happy to know, & to learn of a better method of installation.