The Pros and Cons of Plus Sizing

Plus Sizing replaces your stock wheel with a larger diameter wheel while using a lower-profile tire so the overall diameter stays the same. Done right, it maintains speedometer accuracy and keeps ABS, traction control, and suspension systems happy—while improving response and style. Done wrong, it can reduce ride comfort, stress components, and create clearance issues. Here’s how to do it correctly.

Measurements

• Start with OE specs: Record your current tire size and wheel width/offset.
• Choose the “Plus” step: Plus 1 (e.g., 17"?18"), Plus 2, etc. Each step typically reduces sidewall height.
• Match overall diameter: Keep new tire+wheel diameter within ~3% (max 5%) of OE to protect vehicle systems. Use our tools: Plus/Minus Sizing Calculator, Tire Size Comparison Calculator, and Wheel & Tire Size Calculator.
• Mind bolt pattern & hub: Verify fit with the Wheel Bolt Patterns Guide and confirm hub bore needs.

Clearance Checks

Lower-profile tires and wider wheels can change inner and outer clearances. Before you buy, confirm:

• Offset/backspacing: Review Wheel Offset Explained and Custom Wheel Backspacing to avoid rubbing on fenders, struts, and brake lines.
• Brake caliper clearance: Larger diameters often help, but spoke design matters. Check template fitment if you have big brakes.
• Real-world preview: See stance and style in our Wheel Visualizer.

Safety & Load Ratings

• Match or exceed load index and speed rating: Start here: Tire Load & Speed Ratings and Tire Load Ratings.
• Unsprung weight: Heavier wheels can impact ride and component wear. Consider flow-formed or lightweight designs.
• Inflation & TPMS: Keep proper pressure; see TPMS Service when swapping wheels.

Professional Fitment Advice

Pros: Sharper steering, improved cornering stability, modern look. Cons: Firmer ride, potential road noise increase, tighter clearances. Our specialists balance these trade-offs for your vehicle and goals. For a turnkey solution, choose Wheel & Tire Packages—mounted, balanced, and road-force ready. Need exact specs? Submit a Custom Built Wheel Order.

Get Help

Have questions about plus sizing or the best size for your car, truck, or SUV? Contact Us. Ready to explore? Shop Wheels or Shop Tires. For deeper planning, revisit the Plus/Minus Sizing Calculator.

Reviewed by the Performance Plus Tire Fitment Team.