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Load Index Speed Rating Calculator
Maximum tyre load from load index and vehicle needs.
truck Free Online Tool
⚡ Instant Results
📊 Clear Comparison
🔒 100% Free Tool
Load per tyre
Compare Your Options And Get Clear Answers
Maximum tyre load from load index and vehicle needs.
Load Index Speed Rating Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: Load ~ 250 x 1.0275^(index – 60)
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Load Quick Guide
Typical values for reference.
| Load index | Tyres on vehicle | Vehicle weight (kg) | Load per tyre |
|---|---|---|---|
| 91 | 4 | 1500 | 580 kg per tyre |
| 97 | 4 | 1800 | 682 kg per tyre |
| 82 | 4 | 1000 | 454 kg per tyre |
| 104 | 6 | 3500 | 825 kg per tyre |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Load Index Speed Calculator FAQ
Answers to common questions about this calculator.
It uses the formula shown with your inputs. Real conditions vary, so treat it as a guide.
Load ~ 250 x 1.0275^(index – 60)
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.
Yes. Replace each input with your own figures and the result updates instantly.