Does Axle Ratio Affect Towing? (Yes—A Lot)
Yes. Axle ratio is one of the biggest factors in towing capacity. A higher numeric axle ratio (like 3.73 or 4.10) usually increases towing rating because it multiplies torque more effectively.
Common axle ratios
- 3.23: better fuel economy, lower towing
- 3.42: middle ground
- 3.73 / 4.10: best for towing
How to find your axle ratio
Check:
- your glovebox RPO codes (if available)
- build sheet
- door sticker / owner’s manual
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