How to Prevent Car Tire Cracks Caused by Heat and Long-Term Parking

Cracks on car tires especially on the sidewall and tread are common issues during extreme heat or when a vehicle is parked for long periods. This condition should not be underestimated, as tire cracks can develop into blowouts when driving at high speeds. In this article, you will learn the causes of tire cracks, clear answers to questions such as “Are cracked car tires safe?”, and effective prevention methods based on driving habits and daily maintenance.
 

Why Do Car Tires Crack in Hot Weather?

Hot weather increases air pressure inside the tire. When a car is continuously exposed to sunlight or parked for long periods on heat-retaining asphalt, the rubber can dry out and lose elasticity. Over time, this leads to dry cracks, usually appearing on the sidewall.
 
In addition, tires that are rarely cleaned may accumulate dirt and oil, accelerating rubber oxidation. Tire age is also a major factor—rubber continues to undergo chemical changes over time, even if the tire is rarely used.
 

Are Cracked Car Tires Safe?

In general, cracked car tires are not safe to use, especially when cracks are visible on the sidewall or tread. Even small cracks indicate that the rubber structure has begun to weaken, increasing the risk of a tire blowout—particularly at high speeds, under heavy loads, or on hot roads.
 
The risk is higher if:

• Cracks appear in multiple areas
• Cracks penetrate deeper layers
• The tire is more than five years old
• Tire pressure is frequently incorrect

If you notice these signs, immediate inspection or tire replacement is strongly recommended.
 

Common Causes of Tire Cracks Besides Heat

1. Unstable Tire Pressure
Both underinflation and overinflation accelerate wear and weaken tire structure.

2. Long-Term Parking in One Position
Tires bearing static load for extended periods can deform, making rarely used vehicles more prone to cracking.

3. Poor Driving Habits
Sudden acceleration, hard braking, or driving fast on damaged roads increases tire stress and speeds up cracking.

4. Tire Age
Even if the tread looks thick, tires nearing five years old tend to dry out, increasing the risk of cracking and blowouts during hot conditions.
 

How to Prevent Tire Cracks During Hot Weather and Long-Term Parking

• Check Tire Pressure Regularly
  Maintain pressure according to the vehicle manufacturer’s recommendations.
• Park in Shaded Areas
  Avoid direct sunlight for long periods. Move the vehicle occasionally to prevent pressure concentration.
• Use the Vehicle Regularly
  Driving the car several times a week helps maintain tire elasticity.
• Clean Tires Periodically
  Remove dirt and oil using mild soap and water to slow rubber degradation.
• Avoid Overloading
  Excessive load increases tire stress and blowout risk.
• Perform Tire Rotation and Balancing
  Rotating tires every 10,000 km helps distribute wear evenly and reduce cracking risk.

Signs That Tires Need Immediate Replacement

• Tire surface feels hard and stiff
• Bulges appear on the sidewall
• Tread depth reaches the wear indicator limit
• Vehicle vibrates while driving despite balancing

Tire Maintenance Tips to Prevent Blowouts

• Check tire pressure every two weeks or before long trips
• Avoid severely damaged roads when possible
• Adjust tire pressure based on load conditions
• Inspect valve condition to prevent slow leaks

Recommended Dunlop Tires for Heat Resistance and Durability

In tropical climates like Indonesia, tires must withstand high road temperatures. Dunlop offers several tire series designed for heat resistance, durability, and driving comfort:

• Dunlop Blue Response TG – Balanced comfort, stability, and heat-resistant compound
• Dunlop Direzza – High performance with optimal grip in various conditions
• Dunlop Enasave EC300+ – Efficient and durable for daily use

Conclusion

Cracked car tires should never be ignored, as they directly affect driving safety. Hot weather, incorrect tire pressure, long-term parking, and tire age are the main causes of rubber cracking. With regular maintenance, good driving habits, and high-quality tires like DUNLOP, you can prevent tire cracks and improve driving safety.

If your tires show signs of cracking, have them inspected or replaced immediately. Explore the official DUNLOP tire catalog to find the right tires for your vehicle.