Tire is the rubber covering on the wheel of a vehicle. Most tires are made of casing and tread put on the casing.
What is tire retreadability?
Quality tires are made to have quality casings that can withstand the test of time. Often times, the casing of expensive premium tires remain in good condition despite the treads being worn out. It is the casing that contributes more to the initial cost of tire purchase than the tread. So many organisations with fleet try to maximise the use of their tires by reusing the casings up to about three times by doing tire retreading. This is a way they save cost from the use of expensive premium tires.
The more a tire can be retreaded again due to the good condition of its casing, the more its retreadability.
The construction and quality of new tires greatly affect its retreadability.
Factors that affect tire retreadability
1. All-steel casing construction increases retreadability. This is mostly meant for heavy commercial use.
2. Enhanced bead package and sidewall that is designed for durability provides high retreadability.
3. A tire that is contrusted with groove bottom ejection system reduces stone retention and casing penetration. This leads to higher retreadability.
4. Shoulders and steel sidewalls that are reinforced help deliver long casing life and retreadability.
5. Lower operating temperatures enhances tyre integrity and retreadability.
6. Some designs such as rugged four-rib design with special groove shape that combats stone retention gives higher mileage and retreadability
7. Tires that are underinflated run hotter. This can lead to reduced miles per tire and also reduced retreadability.
A smart way to benefit from a tire's retreadability is to retread before existing tread is completely worn out. That is, when a tire is pulled before it's legal tread limit (legal minimum tread depth).