Larger rim · shorter sidewall

Plus sizing calculator

Enter your original metric size to explore +1 and +2 rim candidates. The tool filters by nominal diameter difference within ±3%; that filter does not approve a fit.

Before installation: Check the specific tire model, load index, speed rating, approved rim width, wheel offset, brake clearance, and clearance through steering and suspension travel.

Plus-size options

How to read this table: The base row is your reference. Plus-1 and Plus-2 increase rim diameter by one and two inches. The percentage compares nominal overall diameter with the base. A 0.00% delta means the calculated diameters match, not that the tire fits.

Size	Step	Rim	OD (in)	Diameter delta

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Important: Candidates are mathematical size combinations. Product availability, approved rim width, tire load capacity, speed rating, and vehicle clearance have not been checked. Confirm a replacement using the vehicle and tire manufacturers' specifications.

What is plus sizing?

Plus sizing is the practice of fitting a tire with a larger rim diameter than the original equipment while keeping the overall tire diameter (and estimated rotation rate) approximately the same.

A larger rim needs less sidewall height to preserve a similar overall diameter. Width and aspect ratio work together, so a fixed aspect-ratio shortcut cannot guarantee a diameter match. The tool calculates each candidate before applying its 3% filter.

Read our plus sizing guide for a full explanation of the tradeoffs.