The Day I Finally Decided to Change My Tires: A Dialogue Between a Cheapskate and AI
1. Current Dilemma: Still usable? Or time to replace?
Road bike tires are by no means cheap, so it is a cyclist's honest desire to want to use them until they reach their absolute limit.
This time, I had an AI (Gemini) diagnose the wear on my front and rear tires to see if I could rotate them and squeeze out another year of use.
2. Wear Diagnosis by AI (Image Analysis)
• Rear tire condition: The contact surface is completely flat (square-shaped), and the tread pattern has disappeared. The risk of a puncture is extremely high.
• Front tire condition: While it has more curvature than the rear, there are fine cracks and cuts visible on the sidewalls.
3. The Pitfalls of "Rotation"
While rotation is meant for saving money, it actually carries life-threatening risks for bicycles.
• Importance of the front tire: Moving a worn rear tire to the front, which handles steering and braking, exponentially increases the risk of a crash.
• Lifespan limits: The typical lifespan is 3,000 to 5,000 km. Running for another year (several thousand kilometers) from the current state is physically impossible due to the lack of rubber thickness.
4. The Smart "Cheapskate's" Guide to Tire Longevity
Here is the answer on how to use them most efficiently when I install a new set next time.
• Timing: Perform rotation at 2,000 to 3,000 km (when the rear tire starts to flatten slightly).
• Method: Slide the "front tire" to the "rear" and always put a new tire on the "front." This is the ultimate cycle that balances safety and longevity.
5. The Decision and a New Partner
As a result of the diagnosis, I finally made up my mind.
I decided to switch to the "Continental Grand Prix 5000 (28c)" that I had been keeping in storage.
Considering the peace of mind for riding brevets (200km/300km) and the rolling performance of the GP5000, this investment should be the right choice, both as an "insurance premium" and as a "pleasure expense."
Afterword
"Still good to go" often means "already dangerous."
By using objective data and diagnosis, even my stubborn self was convinced to take a new step (or pedal stroke) forward. I am looking forward to my next brevet with the new tires.
This is my exercise of the right to folly.