# Tire Size Calculator +

> Compare & Speedo Error

Canonical page: [https://chrome-stats.com/d/id6790019544](https://chrome-stats.com/d/id6790019544)

## Overview

- **ID:** `id6790019544`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** heekyung moon
- **Category:** Utilities
- **Version:** 1.1.1
- **Last updated:** 2026-08-01
- **First published:** 2026-07-21
- **Size:** 52 MB
- **Data as of:** 2026-09-09
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/tire-size-calculator/id6790019544)
- **Website:** [https://janey-moon.blogspot.com/](https://janey-moon.blogspot.com/)
- **Privacy policy:** [https://sites.google.com/view/tiresizesss](https://sites.google.com/view/tiresizesss)

## Description

Compare two tire sizes side by side — diameter, sidewall and speedometer error — and find plus-size fitments within your target.

▶ Compare two tire sizes at a glance. Enter both specs and see the difference in diameter, circumference, sidewall and ride height, with a to-scale overlay so the size change is obvious.

▶ Check your speedometer. See how a new tire shifts your real speed versus the reading, plus an odometer-error percentage — the numbers that matter after an upsize.

▶ Find plus sizes. Enter a target and get alternate sizes within a few percent of the original diameter, grouped by rim so you can plan a clean plus-one or plus-two.

▶ Decode the markings. Load-index and speed-rating tables turn the numbers on the sidewall into kg and km/h, with P, LT and XL explained.

▶ Save your vehicles and share a result card. Works offline, no account needed.

Results are for reference only. Fitment and clearance depend on your vehicle — always confirm with your owner's manual or a tire professional.

## Rankings

- #1,129,565 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6790019544)