The back tires of the bicycle...

I ride a bicycle about 290 days a year.、munejyuka。

last week、When I was putting air into the tires of my bicycle, I was surprised to see that the rear tires were getting very sluggish.。

so、

I wanted to replace it, so I did some research on the internet.、As for the exchange method

① Go to the store and get it exchanged.。Is the budget approximately 4,000 to 5,000 yen?

②Replace it yourself。Is your budget 2500 yen?

Is it like that?。Regarding ①, it was written that the cost seems to vary depending on the store and that the replacement cost is high.。

② says to buy tires and tubes at a home center and replace them yourself.。Mochi Ron、You also need tools。Also, remove the chain from the rear tire.、It was written that adjustment during installation was a hassle.。Is it difficult for amateurs?

so、I'm worried。I'm not that handy a person、Icchan is scared of roses、I wish I couldn't go back.。The front wheels seem to go easily...

What should I do...