Plus Sizing Calculator (+1" & +2")
Discover compatible larger wheel combinations with lower profile tires that maintain nominal vehicle rolling diameter.
Tire 1 (Base Spec)
Tire 2 (Comparison Spec)
Quick Telemetry Summary
Plus Sizing Guide (+1" / +2" Wheels)
Increase wheel diameter for enhanced cornering response and sporty appearance while maintaining your vehicle's factory rolling diameter with lower-profile sidewalls.
| Candidate Size | Diameter | Variance |
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| Candidate Size | Diameter | Variance |
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Detailed Dimension Comparison
| Measurement | Tire A (Stock) | Tire B (New) | Difference | Variance % |
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Real-Time Visual Tire Comparison
Specialized Tire & Wheel Tools
Tire Size Calculator
Calculate comprehensive measurements and rolling specs for any individual tire.
Tire Size Comparison
Side-by-side dimensional comparison between two tire setups with visual delta.
Tire Diameter Calculator
Find overall diameter and ground clearance differences between profiles.
Tire Circumference Calculator
Calculate rolling distance and revolutions per mile/km for odometer checks.
Speedometer Calculator
Calculate speed reading variances caused by tire diameter changes across speeds.
Tire Size Chart
Explore 70+ common automotive tire sizes, specs, and standard applications.
What is Plus 1 and Plus 2 sizing?
Plus 1 increases wheel diameter by 1 inch while reducing aspect ratio to maintain the original tire's overall diameter. Plus 2 increases wheel diameter by 2 inches.
What are the benefits of plus sizing?
Shorter, stiffer sidewalls provide sharper steering response, reduced cornering body flex, and enhanced visual appeal.
Automotive Fitment & Safety Advisory
Calculations presented on TireSizeChecker.com are nominal mathematical projections. Actual installed rolling dimensions fluctuate depending on rim width matching, tire manufacturing tolerances (TRA/ETRTO standards), pneumatic inflation pressure, dynamic speed expansion, and vehicle cornering loads.
Always verify mechanical suspension clearance, brake caliper clearance, wheel fender lip clearance, speedometer recalibration, and load/speed ratings with a certified tire technician before mounting non-OEM tire sizes.