Tire tread-life calculator
How much tread life is left?
Wear rate = depth lost ÷ distance driven. Projected remaining distance = (current depth − selected depth) ÷ wear rate, floored at zero. Losing 3 mm over 30,000 km gives 1 mm per 10,000 km. From 5 mm to a selected 3 mm the projection is 20,000 km; to 1.6 mm it is 34,000 km. These are arithmetic examples, not safe mileage or legal approvals.
- Wear rate
- 1 mm / 10k km
- Distance to selected depth
- 34,000 km
- Projected distance from new
- 64,000 km
Linear estimate only. The initial 1.6 mm is an editable calculation value, not a worldwide legal or safe-use limit. Select the applicable depth from local rules and manufacturer guidance. Damage, ageing or changing wear can require earlier replacement.
Worked examples
Tread-life estimates are useful only when they start from a measured wear interval. These examples show how quickly the projection changes.
| New tread | Measured tread | Distance measured | Wear rate | To 1.6 mm |
|---|---|---|---|---|
| 8.0 mm | 5.0 mm | 30000 km | 1.00 mm / 10k km | 34000 km |
| 7.5 mm | 4.0 mm | 35000 km | 1.00 mm / 10k km | 24000 km |
| 7.0 mm | 4.0 mm | 18000 km | 1.67 mm / 10k km | 14400 km |
What to do with it: Recheck sooner if alignment, pressure or driving conditions change.