# Plus Size Tire Calculator

Plus-size a Tacoma wheel while keeping overall diameter the same. Find the aspect ratio for a larger rim so the speedometer and gearing stay accurate.

## Canonical URL
https://tacotires.com/plus-size-calculator

## What It Does
- Diameter-matched size: Solves the aspect ratio that holds overall diameter constant on the new rim.
- Calibration safe: Keeping diameter the same keeps the speedometer, odometer, and gearing accurate.
- Real sizes only: Rounds the aspect ratio to a manufactured step and checks the result is a valid size.

## Summary
- Solves the tire size that keeps overall diameter constant when moving to a larger or smaller rim.
- Keeping diameter constant preserves speedometer, ABS, and gearing calibration.
- Rounds the aspect ratio to a manufactured step and validates the resulting size.

## FAQ
### What is plus sizing?
Plus sizing moves to a larger wheel diameter while keeping the same overall tire diameter, by using a lower-profile tire. It changes the look and handling without affecting the speedometer.

### Does plus sizing change my speedometer?
No, when done correctly. Because overall diameter stays the same, the speedometer, odometer, ABS, and gearing all stay accurate.

### What is minus sizing?
Minus sizing is the opposite: a smaller wheel with a taller sidewall at the same overall diameter, often for winter tires or a softer ride.

## Related Tools
- [Tire size calculator](https://tacotires.com/tire-calculator)
- [Size to inches](https://tacotires.com/tire-size-to-inches)

## Keywords
- plus sizing calculator
- plus one tire size
- equivalent tire size calculator
- minus sizing calculator