Ownership · Tires

Compare the fit.
Correct the speed.

Compare factory and replacement tire geometry before checking manufacturer and vehicle fitment limits.

New tire diameter

27.25 in
Current Diameter26.74 in
Current Sidewall4.87 in
New Sidewall4.63 in
Current Revs Per Mile754.1
New Revs Per Mile740.1
Difference Percent1.9%
Planning estimate. Confirm lender, dealer, utility, transit, tire-manufacturer, and vehicle-specific terms before deciding.
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Read width, aspect ratio, and wheel diameter together.

Diameter changes affect gearing, clearance, odometer readings, and indicated speed. This is not a fitment guarantee.

Open the verified methodology for formula provenance, assumptions, a worked example, and limitations.