补胎

You use it as a verb-object construction. You can say 我要补胎 (I need to patch a tire). Usually, you are the one asking for the service. You will see this sign on small roadside shops. These shops are often humble but lifesavers. You can also use it to describe what someone else is doing. "Where is Lao Wang?" "He is outside 补胎."

Use this when you are at a repair shop. It is perfect for electric scooters, bicycles, and cars. If you are calling a roadside assistance service, this is the keyword. It is a very "real life" phrase. You will use it when your morning commute is ruined by a nail. It sounds practical and grounded.

Do not use this for big mechanical engine problems. If the tire is shredded, 补胎 won't help; you need 换胎 (change tire). Also, do not use it metaphorically for fixing a relationship. Chinese has other words for "mending" hearts. If you tell your partner you need to 补胎 their heart, they will be very confused. They might think you are calling them a car.

In China, e-bikes and scooters are everywhere. Because of construction, nails on the road are common. This has created a huge culture of roadside repair stalls. These shops are social hubs in neighborhoods. The person fixing the tire is often a master of local gossip. 补胎 shops are the unsung heroes of Chinese urban mobility. They are cheap, fast, and found on almost every corner.

You might hear 修胎 (repair tire), which is more general. If you are talking about a bicycle specifically, you can say 补车胎. In some regions, people might say 扎胎了 (got a puncture) first. Then they follow up with the need to 补胎. It is a sequence of unfortunate events.