Big truck

Data table



CAR  NAMESIZEETPCDCB
Dodge RAM 250022x12-50 8*165.1121.3
24X14-768*165.1121.3
26X14-768*165.1121.3
26*16-908*165.1121.3
Dodge ram 350024x14-768*165.1121.3


Dodge RAM 2500 / 3500 Full Tuning Guide

Core Factory Specs

  • PCD: 8×165.1mm (8×6.5")

  • Center Bore: 121.3mm

  • Wheel Studs: M14×1.5

  • Factory Offset: ET30 ~ ET40

  • Engine Options

    • 6.7L Cummins Turbo Diesel

    • 6.4L HEMI V8 Gasoline

1. Powertrain Tuning

6.7L Cummins Diesel (Main Tuning Platform)

  • ECU Stage 1 / 2 / 3 Tune

    Boost horsepower +60–180HP, torque +150–300lb-ft; improve throttle response, towing power and fuel efficiency.

  • Intake & Intercooler

    High-flow cold air intake + upgraded intercooler, reduce heat soak, maintain stable power.

  • Exhaust System

    4"–5" turbo-back straight pipe exhaust, deep aggressive diesel tone, better airflow.

  • Advanced Upgrades

    Upgraded fuel injectors, high-pressure fuel pump, compound turbo kit; easily reach 500HP+ / 1100lb-ft+.

6.4L HEMI V8 Gas

Cold air intake + long tube headers + cat-back exhaust + custom tune; stronger acceleration and sporty sound.

2. Suspension & Lift Tuning

  • 2.5–3.5" Leveling Kit

    Level front & rear, fit 35” tires; perfect for daily driving and towing.

  • 4–6" Full Suspension Lift

    BDS / Fox / Rancho coilovers; fit 37” tires, improve off-road performance.

  • 8–10" Extreme Lift

    For 22×12 / 24×14 / 26×14 / 26×16 big wheel show builds.

  • Common Upgrades

    Adjustable upper control arms, dual steering stabilizer, heavy-duty leaf springs, bump stops, steel skid plates.

3. Wheels & Tires Tuning

Popular Wheel Sizes + Offset

  • 22×12: ET-44 ~ ET-51 | 4"+ Lift | Tire: 35×12.5R22 / 37×13.5R22

  • 24×14: ET-70 ~ ET-76 | 6"+ Lift | Tire: 37×15.5R24 / 40×15.5R24

  • 26×14: ET-76 ~ ET-84 | 8"+ Lift | Tire: 40×15.5R26

  • 26×16: ET-88 ~ ET-96 | 10"+ Lift + Widebody | Tire: 40×16R26

Rule: 24×14 and above must use forged wheels for heavy load safety.

4. Exterior Styling

  • Custom RAM letter mesh grille

  • Functional heat extraction hood

  • Wide fender flares for lifted big wheel setup

  • Steel front & rear bumpers + side steps / rock sliders

  • 40" LED light bar, A-pillar ditch lights, smoked headlights

  • Blackout trim package & custom badging

5. Classic Build Styles

  • Daily & Towing: 2.5" level + 22×12 wheels + 35" A/T tires + Stage 1 Cummins tune

  • Off-Road Aggressive: 6" lift + Fox suspension + 24×14 wheels + 37" M/T tires + 5" exhaust

  • Show Truck: 10" extreme lift + 26×16 deep dish forged wheels + widebody fenders

6. Installation Key Tips

  • Hub Centric Ring: 121.3mm

  • Lug Nut: M14×1.5 extended conical seat

  • Wheel Torque: 170–180 N·m

  • Large negative offset requires lift + flares to avoid rubbing

  • Lifted trucks must do professional 4-wheel alignment



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