Skip to content
TCTruckingCalc
Cost/MileIFTALoad ProfitHOSPer DiemGuides
Home  ›  Gear Ratio Guides

Gear Ratio by Tire Size

Going up a tire size drops your effective gearing. Pick your new tire height to see the axle ratio that restores stock power and RPM, or run exact numbers in the gear ratio calculator.

⚙️

31" Tires

Best gear ratio and cruising RPM for 31-inch tires.

See ratios →
⚙️

32" Tires

Best gear ratio and cruising RPM for 32-inch tires.

See ratios →
⚙️

33" Tires

Best gear ratio and cruising RPM for 33-inch tires.

See ratios →
⚙️

34" Tires

Best gear ratio and cruising RPM for 34-inch tires.

See ratios →
⚙️

35" Tires

Best gear ratio and cruising RPM for 35-inch tires.

See ratios →
⚙️

37" Tires

Best gear ratio and cruising RPM for 37-inch tires.

See ratios →
Gear owner-operators buy See all gear →
Garmin dēzl OTR620 6" Truck GPS Garmin dēzl OTR620 6" Truck GPSSee it on Amazon → ROVE R2-4K Dual Front & Rear Dash Cam ROVE R2-4K Dual Front & Rear Dash CamSee it on Amazon → LUMITECO Dual-Head Truck Tire Gauge (150 PSI) LUMITECO Dual-Head Truck Tire Gauge (150 PSI)See it on Amazon →

Affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

TruckingCalc

Free calculators and plain-English guides for owner-operators and truck owners. Run the numbers before you run the miles.

Owner-Op

Cost Per Mile Load Profitability IFTA Fuel Tax Deadhead Startup Kit ★

Compliance & Pay

Hours of Service Driving Range Per Diem Take-Home Pay

Truck Owner

Tire Size Gear Ratio Payload Trucker Gear Best Gear Guides All Guides
© 2026 TruckingCalc.com · Estimates only, not tax or legal advice. About · Contact · Privacy · Terms · Disclaimer · Affiliate Disclosure · Do Not Sell My Info

We use cookies for analytics and advertising to keep TruckingCalc free. By using the site you agree to our Privacy Policy.

Free starter kit

New to owning the truck?

Grab the free Owner-Operator Starter Kit: the numbers to nail first, the gear that earns its spot in the cab, and a first-30-days checklist.

On its way. Open the kit now →

Just show me the kit, no email