Tire Weight Comparator
Compare published tire weights in kg and lb. See the weight gap per tire and per set and the share of unsprung mass it adds.
Compare published tire weights.
Tire Weight Comparator: Tire Size Inputs
Compare two tire sizes here. Use the formulas and reference tables below for this tool's specific calculation.
How Tire Weight Comparator Works?
The Tire Weight Comparator works by subtracting published tire weights and scaling the gap to a full set of 4. The tool uses 3 steps.
Enter both weights
Type the published weight of each tire, for example 10.0 kg and 11.5 kg (22.0 lb and 25.4 lb).
Compute the gap
The comparator returns +1.5 kg (+3.3 lb) per tire, +15%.
Scale to a set
The comparator returns +6.0 kg (+13.2 lb) of unsprung, rotating mass across 4 tires.
Tire Weight Comparator Formula
The Tire Weight Comparator formula is ΔW = W₂ − W₁ per tire and 4 × ΔW per set.
ΔW = W₂ − W₁ΔW_set = 4 × ΔWlb = kg × 2.20462- W₁, W₂
- Published tire weights (kg)
Worked example
An LT tire at 27.5 kg (60.6 lb) against a P-metric tire at 23.0 kg (50.7 lb) adds 4.5 kg (9.9 lb) per tire and 18.0 kg (39.7 lb) per set, a 19.6% increase.
Tire Weight Comparator Conversion Table
The Tire Weight Comparator conversion table compares 6 pairs of published tire weights per tire and per set.
| Weight (kg) | Weight (lb) | Gap per tire | Gap per set | Change |
|---|---|---|---|---|
| 9.0 → 10.5 kg | 19.8 → 23.1 lb | +1.5 kg (+3.3 lb) | +6.0 kg (+13.2 lb) | +16.7% |
| 10.0 → 11.5 kg | 22.0 → 25.4 lb | +1.5 kg (+3.3 lb) | +6.0 kg (+13.2 lb) | +15.0% |
| 11.0 → 12.5 kg | 24.3 → 27.6 lb | +1.5 kg (+3.3 lb) | +6.0 kg (+13.2 lb) | +13.6% |
| 12.5 → 14.0 kg | 27.6 → 30.9 lb | +1.5 kg (+3.3 lb) | +6.0 kg (+13.2 lb) | +12.0% |
| 20.0 → 24.0 kg | 44.1 → 52.9 lb | +4.0 kg (+8.8 lb) | +16.0 kg (+35.3 lb) | +20.0% |
| 23.0 → 27.5 kg | 50.7 → 60.6 lb | +4.5 kg (+9.9 lb) | +18.0 kg (+39.7 lb) | +19.6% |
What is Tire Weight Comparator?
A Tire Weight Comparator is a tool that compares the published weight of 2 tires. Tire weight is unsprung and rotating mass, which affects ride, handling, acceleration and braking more than the same weight in the body.
Weight varies within one size. Run-flat, XL, LT and all-terrain tires weigh 10% to 30% more than standard passenger tires of the same size.
Tire makers and retailers publish weights on spec sheets. Weights are new-tire values.
What are the uses of Tire Weight Comparator?
There are 4 main uses of the Tire Weight Comparator, including performance builds and EV range.
Performance builds
Reduce unsprung mass with a lighter tire.
EV range
Avoid weight gains that cut range.
Off-road builds
Measure the weight cost of LT construction.
Shipping estimates
Estimate freight for a tire order.
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