Can I repair this or should I replace it immediately? [Side of rear tire]
 

Just noticed this today, a litte tear on the sidewall tan of my tire (Specialized Infinity Reflective Tan). How problematic is to keep riding it? Is there a fix or I just lost this tire?
https://cimg3.ibsrv.net/gimg/bikefor...a8c097ae2d.jpg
https://cimg4.ibsrv.net/gimg/bikefor...14d31a1c54.jpg
https://cimg5.ibsrv.net/gimg/bikefor...0d253e04fc.jpg

that's certainly something to replace. kinda don't know how long it would last. I once rode a '70s era bike w/ possibly original tires. I did a test commute & about 3/4 the way there the sidewalls started popping & looked a little worse that yours. I turned around & made it back approx 13 miles. you tire is probably newer but they don't make them as durable these days, I don't think. change it before your next ride if you can. have no idea what you could do to "repair" it

Oh wel, that's a bummer. The previous owner barely used it, and I do really short commutes, so not many KM under it's belt. Anyways, not worth risking a crash, right? Thank you!

There is a definite bulge there too. Replace it. Sorry

That tire is toast, the sidewall is tearing away from the bead. Failure is imminent.

time to retire that tire.

An inexpensive new tire is better than a faulty good one (although I wouldn't purchase a poor new tire.

Although it doesn't look like a rim brake (the rim is unscratched), you might want adjust the brakes as well. That looks like a classic brake rub on the tire. If it's not a brake rubbing on the tire, you should find out what is wearing through the tire and prevent it from doing it again since you'd just have to replace a new tire rather quickly.

That is a good call, maybe not applicable in this case, but perhaps something that other people looking at this thread should look into. Sidewall failure close to the rim when you don't have rim brakes is almost always about tires that have simply dried out and can't hold together any longer.

No to sound too much like a crotchety old guy-- I mean, I'll do almost anything I can to squeeze a few more miles out of a tire-- but the tire in question costs around $17.

Just buy a new tire.

Yep, time for a new tire. Put the new one on the front and rotate the older tire to the rear wheel.
Best practice to always have the “freshest” rubber on the front.

I think this tire is a 2016 model, not sure for how many years they still produced it, so that's probably the cause.

I don't live in the USA :( so 17 dollars may sound cheap, but here the price is a higher. Although it is still cheaper to replace it than paying for pills and bandages if it results in a crash. So yeah, already ordered a new one.

Thanks for the tip, will do it!

Maybe not many kms, but you can tell by how dried out the sidewall looks that it is at least a few years old, or is left in the sun a lot.

Anyhoo, replace. No repair advisable or possible.