Understand tire load indices and weight ratings. Ensure your tires can safely handle your vehicle's weight.
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Enter Your Measurements
Results
Total Vehicle Capacity
6,084
lbs
Max Load Per Tire
1,521
lbs
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Formula
Load Rating = Standardized Load Index value
How to Use This Calculator
How to Use
- 1
Find the load index on your tire sidewall (two or three digit number).
- 2
Enter the load index.
- 3
Get the maximum weight rating for your tires.
Frequently Asked Questions
Frequently Asked Questions
What is a load index?
A load index is a number that indicates the maximum weight a tire can carry at maximum PSI. Higher numbers = higher weight capacity.
Should I choose higher load index tires?
Use the load index recommended by your vehicle manufacturer. Too high can give a rougher ride; too low is unsafe.
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About This Calculator
This calculator uses the formula: Load Rating = Standardized Load Index value. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.
Built and maintained by the CalcSmart team. Last updated March 2026.
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