Resource Center
Important Disclaimer
All content, calculators, tools, and guides found in this Resource Center are provided for entertainment and general informational purposes only. Results may vary based on vehicle configuration, driving conditions, and real-world factors. Always consult a trained and qualified professional and your manufacturer’s service documentation before performing modifications, repairs, or making purchasing decisions. Use of this information is entirely at your own risk.
All content, calculators, tools, and guides found in this Resource Center are provided for entertainment and general informational purposes only. Results may vary based on vehicle configuration, driving conditions, and real-world factors. Always consult a trained and qualified professional and your manufacturer’s service documentation before performing modifications, repairs, or making purchasing decisions. Use of this information is entirely at your own risk.
Regear + RPM Calculator
Transfer case assumed 1.00 (High)
RPM @ speed (NEW tires, current gears)
Your cruising RPM right now.
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“Match old feel” axle ratio target
Current ratio × (new tire ÷ old tire).
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Recommended common gear (rounded UP)
Next higher standard ratio.
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RPM @ speed (recommended gear)
Preview after re-gear.
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Uses: RPM = (mph × (top gear × 1.00 × axle) × 336) ÷ tire diameter.