Is this hole in my rear tire fixable?

My general rule with my bike... Any sign of a hole is not worth the risk. Is it fixable? Maybe? Is the risk worth the cost of replacement, for myself and my family... Absolutely not.

That said, take it to a shop and get the word from an expert. Don't trust your life to the opinions of the Internet based off of a picture of your tire.

As someone who works in the tire industry, I'd say that tire is dead, unfortunately. I'd recommend replacing as soon as possible and not to attempt driving on it much, as you can cause unseen damage to the inside and compromise the integrity further.

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Looks like more of a gash/tear rather then a hole. So no, that's not fixable.

You have good answers in the thread and probably have decided on your solution. Let's talk about the future, too.

I've been using mushroom style plugs for well over a decade and surely have tens of thousands of miles on plugged tires. Maybe some would consider my attitude on the subject ummm, cavalier. Every tire I've "repaired" in this way was a clearly screw/nail/round puncture. Yours looks scary to me. Find the budget and get a new tire.

Also get a plug kit for future just-in-case. They work, even if you don't care to use a holed tire until the end of it's life, a plug can get you back to a place where the tire can be replaced, just treat it like a doughnut spare for a car and go gently.

If it was a puncture i'd just use a simple repair kit and it would hold until the tyre is all worn and needs replacing.

That's a rip, though... unless you use some sealant from the inside... and even then i can't advise on anything from experience, check with your local mechanic.

You already have good answers. To add to the reason why this tire is dead is it is a slice not a hole. When you get a hole from a nail in your tire it usually goes between the belts. With a slice like this. It is much more likely that belts have been cut. This means the strength of the tire is compromised. If I was out on the trail or just trying to get home I would plugged it for the short term. So if you need to ride it to the shop to get a new tire you should be fine, but this is not a tire to trust your life with.

It's leaking air? Tires dead.

lol it's super fixable! Just put a bit of adhesive tape on it and it's good as new! I'm sure nothing bad will happen! Make sure to test your repaired tire and speed a little to make sure that the tape is on real good!