What Causes Tyre Bulges

The causes of tyre bulges include:

1. Insufficient tyre pressure: When tyre pressure is too low, even minor bumps or subtle road irregularities can cause excessive flexing, leading to bulges. Low pressure allows the wheel rim to impact and compress the tyre more easily, potentially causing bulges or even blowouts;

Solution: Visually assess whether the tyre can still be driven on. If possible, proceed to the nearest tyre repair shop. If the pressure is too low to drive, use a portable air pump to inflate before heading to a garage;

1. Impact damage: For example, rapidly driving over speed bumps or kerbs can violently compress the tyre, increasing internal air pressure and causing the weaker sidewall to bulge outward;

Solution: Inspect both wheel rim and tyre. Replacement is usually recommended;

1. Poor road conditions: High-speed driving over rubble, particularly on hard uneven surfaces or raised manhole covers, creates significant impact forces that may cause bulging;

Solution: Have the damage assessed at a garage and replace the tyre promptly;

1. Manufacturing defects: If bulging occurs during normal driving conditions, this indicates a quality issue;

Solution: Contact the manufacturer directly for replacement. Always purchase quality-assured branded tyres;

1. Carcass ply failure: The tyre's carcass ply bears nearly all operational stresses including inflation pressure, vehicle load, impact absorption, and traction/braking forces. Bulging often signifies ply failure;

Solution: Tyres with compromised carcass plies must be replaced immediately and should not be driven on