Wheel & Tire Clearance Estimator | Fitment Calculator
Estimate how changes in tire size and wheel offset affect clearance towards suspension (inner) and fenders (outer/poke). Helps plan new wheel and tire setups.
This calculator helps you estimate how changes in both tire size and wheel offset will affect your vehicle's wheel and tire clearance. It calculates the difference in inner clearance (space towards suspension components) and outer clearance/poke (how much further the wheel/tire assembly will extend towards the fender or beyond).
Why is this important? - **Avoiding Rubbing:** Prevents tires from rubbing against suspension parts, brake components, or the vehicle's body/fenders, especially during turns or suspension travel. - **Planning Upgrades:** Essential when considering wider tires, larger diameter wheels, or wheels with different offsets than stock. - **Achieving Desired Stance:** Helps visualize how 'aggressive' or 'tucked' a new setup will be.
Inputs required are the P-Metric specifications (width, aspect ratio, rim diameter) for both your original and new tires, as well as the offset (in mm) for both your original and new wheels.
**Important Note:** This tool provides geometric estimations. Actual clearance can be affected by vehicle-specific suspension design, alignment settings, body shape, and tire brand/model variations (as some tires run wider or narrower than their stated section width). Always physically verify clearances after installation, especially under full suspension compression and steering lock.
- Enter the P-Metric specifications (Width, Aspect Ratio, Rim Diameter) for your vehicle's Original Tire.
- Enter the Wheel Offset (in mm) for your Original Wheels. (e.g., +45, +20, 0, -12).
- Enter the P-Metric specifications for the New Tire you are considering.
- Enter the Wheel Offset (in mm) for the New Wheels you are considering.
- Click "Estimate Clearance".
- The results will show estimated changes in overall tire diameter, width, inner clearance (towards suspension), and outer clearance/poke (towards fender).
- Interpret results carefully: 'Reduced by' for inner clearance means less space; 'Reduced by' for outer clearance means the wheel is more tucked. 'Increased by' for outer clearance means more poke.
All tools and information provided on TireCalculatorHub are for informational and estimation purposes only. Always consult with a qualified professional and physically verify clearances before making modifications to your vehicle's wheel and tire setup. TireCalculatorHub is not liable for any damages, fitment issues, or problems arising from the use of information or tools on this website.