Plus Sizing Explained: Bigger Rims Without Changing Diameter

What Is Plus Sizing?

Plus sizing means going to a larger rim diameter while using a lower-profile tire to maintain the same overall tire diameter. This preserves your speedometer accuracy and odometer readings while changing the look and handling characteristics.

Plus Size Levels

• Plus Zero: Same rim size, different tire width/profile. Used for changing handling characteristics without changing rims.
• Plus One: One inch larger rim, lower profile tire. The most common upgrade. Example: 225/60R16 → 235/50R17
• Plus Two: Two inches larger rim. Example: 225/60R16 → 245/40R18. More aggressive look, sportier handling.

Benefits

• Better cornering and handling (shorter sidewall = less flex)
• More aggressive appearance
• Better brake cooling (larger wheels = more airflow)
• No speedometer recalibration needed

Trade-offs

• Harsher ride (less sidewall to absorb bumps)
• Higher cost (larger wheels + low-profile tires)
• More susceptible to pothole damage
• Potentially higher road noise

Use our plus size calculator to find the right options for your vehicle.