Tyre Configuration
Measure the deepest groove of your tyre tread in millimetres
Total mileage since tyres were fitted
The 20p Test Guide
20p
✅ Above 3mm - Safe
Insert a 20p coin into your tyre tread. If you can see the outer band, your tyres are below 3mm and need replacing soon.
Adjust the slider above to match your actual tread depth.
CURRENT STATUS
Tread Depth
5.0 mm
Legal Status (1.6mm min)
✅ PASS
Safety Status (3mm rec)
⚠️ MARGINAL
Miles on Tyres
15,000
PREDICTIONS
Miles until 3mm
2,400
Miles until 1.6mm
7,200
Time to replacement
3.2 months
Based on (annual avg)
12,000 miles
SAFETY IMPACT
Stopping distance at 30mph on wet road:
+7m longer stopping distance (3 car lengths)
RECOMMENDATION
⚠️ Plan replacement within 2,400 miles. Book before winter for safety.
Estimated replacement cost
£280
Risk increase vs new tyres
180%
ADVANCED METRICS
PRO
Compound Efficiency
87%
Projected Savings
£1,240
Fleet Risk Score
2.4