Goo exploded from the tireUpdated 7 days ago

Overview

This article explains why gel or “goo” can come out of a self‑healing tire, how to prevent it, how to clean affected surfaces, and what to expect. It clarifies that this behavior is caused by operating conditions, not a manufacturing defect.

What is a self‑healing tire?

A self‑healing tire contains a liquid or gel lining on the inside surface. When the tire is punctured, the gel fills and seals small holes instantly, helping prevent flats and preserving rideability.

Why goo can leak or “explode” from the tire

• If a tire is run at very low pressure, the tire sidewalls and rim area can contact nearby hot components (for example, a motor or brake).
• When the tire is very low and the wheel makes contact or gets extremely close to a hot motor, the heat can cause the internal gel to soften or melt.
• Softened gel can be forced out through the puncture or valve area by wheel movement and pressure changes, appearing as goo expelled from the tire.

Prevention

1. Check tire pressure regularly — inflate to the manufacturer’s recommended pressure before each ride or at least weekly for stored vehicles.
2. Avoid riding with noticeably low tire pressure. If you see or feel the tire is underinflated, stop and inflate before continuing.

Cleaning goo from surfaces

• To clean goo from the motor or other hard surfaces, use a high‑concentration alcohol (isopropyl alcohol 70–99%) and a clean cloth.
• Apply alcohol to the cloth first, then wipe the affected area. Repeat as needed until residue is removed.
• Avoid getting alcohol into electrical connectors, bearings, or sealed components. If goo has entered sensitive parts, have a technician inspect it.
• Clean up any residue on rims or surrounding parts before reassembling or riding.

Tire replacement

• If the sealant has escaped or the internal lining is compromised, the tire will likely need to be replaced.
• Continued use after significant sealant loss or structural damage can lead to further failure and unsafe riding conditions.

Important notes

• This is not a manufacturing defect. The gel is functioning as intended to seal punctures; the goo issue arises when melted gel contacts a hot surface due to low tire pressure.
• Seek immediate repair if structural tire damage or excessive sealant loss is present. Continued use with low pressure can damage the tire and wheel.

Related articles

• How to check and inflate tire pressure