Tyre Wear & Replacement Calculator
Predict how many months remain before your tyres reach minimum safe tread depth and plan out the cost of new tyres.
Additional Information and Definitions
Current Tread Depth (32nds of an inch)
Enter your tyre's current tread depth in 32nds of an inch. For example, new tyres often start at around 10/32 to 12/32 of an inch.
Minimum Safe Tread Depth
The minimum recommended safe tread depth, typically around 2/32 of an inch. Once below, the tyres should be replaced.
Miles Driven per Month
Average miles you drive each month. Used to estimate how fast tread is worn.
Tread Wear per 1000 Miles (32nds)
How many 32nds of an inch of tread wear per 1000 miles. This depends on tyre quality and driving conditions.
Cost per Tyre (£)
Average price for one new tyre, excluding installation fees.
Number of Tyres
Usually 4, but could be 2 if replacing only a pair. Some vehicles have more specialised needs.
Plan Your Next Tyre Purchase
Avoid sudden tyre expenses—see when you’ll need replacements.
Loading
Key Tyre Terms
Understand these tyre-related concepts:
Tread Depth:
Measurement of how much usable rubber remains on the tyre. More depth generally equals better traction.
Minimum Safe Tread:
A recommended lower limit for tyre usability. Falling below it greatly compromises traction and safety.
Tread Wear Rate:
Specifies how quickly tyres lose tread under normal conditions, typically expressed in 32nds per 1000 miles.
Replacement Budget:
The amount set aside to cover new tyres, balancing safety and financial planning.
5 Curious Facts About Tyre Longevity
Tyres might seem straightforward, but there's more than meets the road. Check out these tyre insights:
1.Rubber Compounds Matter
High-performance tyres often use softer rubber for better grip, wearing faster. In contrast, touring tyres use harder compounds for longevity.
2.Weather Impacts Wear
Extreme heat can accelerate tread loss. Cold conditions keep rubber stiffer, which sometimes reduces wear but can affect traction.
3.Inflation Levels Are Critical
Both under-inflation and over-inflation cause uneven tread wear. Proper inflation helps extend tyre life and improve fuel efficiency.
4.Rotation Frequency
Rotating tyres regularly helps distribute wear more evenly. Many vehicle manufacturers recommend rotation every 5,000 to 7,500 miles.
5.Age Over Mileage
Even with minimal usage, tyres degrade over time due to oxidation. Many experts suggest replacing tyres older than 6 years for safety.