Tire Size Fitment is a utility app for iOS and Android that provides graphical tire and wheel modification calculations for automotive enthusiasts.
Product velocity
Maintenance
Daily rank 🇺🇸
—
Utilities
Sentiment
3.5
165 reviews
Nemesis
Fuel Calculator: MPG, L100k
The App DNA
What makes this app unique?
Users hire this tool to visualize complex fitment data, ensuring mechanical clearance and speedometer accuracy before purchasing expensive hardware.
For Automotive enthusiasts and vehicle owners planning tire or wheel modifications.
What does it look like?
Key features
Visual side-by-side comparison of tire width, radius, diameter, and circumference changes.
Calculates vehicle speed variance resulting from tire and wheel size modifications.
Determines physical space requirements for new wheel and tire setups.
How much does it cost?
Monetization relies entirely on ad-inventory across the free user base.
Velocity
Maintenance developmentperformanceinternationalizationShow more...
The app exhibits a low-frequency release cadence, averaging approximately 0.07 releases per week over the last 14 months. Development is strictly limited to minor bug fixes and maintenance, with no evidence of new feature development or live operations. The latest release occurred in May 2026, following a significant gap since the previous update in April 2025. The development trend is stable at a maintenance level, focusing solely on stability rather than product growth.
Who built it?
User Sentiment
What do users think recently?
Recent user voice shows an excited sentiment. Users appreciate visualizing tire and wheel offsets helps users accurately determine fitment before purchasing expensive hardware and the free tool provides more detailed technical specifications than competing calculators available on the market, but report lack of imperial unit support forces users to manually convert measurements, creating unnecessary workflow friction.
How are ratings & reviews evolving?
What users say, by theme
- Visualizing tire and wheel offsets helps users accurately determine fitment before purchasing expensive hardware
- The free tool provides more detailed technical specifications than competing calculators available on the market
- Simple and intuitive interface allows users to quickly calculate complex tire size changes without friction
- Lack of imperial unit support forces users to manually convert measurements, creating unnecessary workflow friction
58 of 58 recent reviews analyzed · high confidence · Excited overall
Read the full review analysisUnlock 2 more frustration themes and 2 user requests, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for Tire Size Fitment
How's the Utilities market?
The app is currently gaining visibility in the Auto & Vehicles category in Canada and Thailand, though it faces high volatility in other markets. The lack of a paid tier lags behind competitors who offer broader vehicle-maintenance utility.
Read the market outlookThe rivals identified
By Verosocial Studio
This app competes for the same automotive utility audience by providing essential vehicle metrics and conversion tools that overlap with tire-related calculations.
- Massive user base of over 4,700 ratings creates a significant social proof and discovery advantage
- Includes odometer tracking features that provide long-term utility beyond simple one-off tire size calculations
- Multi-unit conversion engine offers broader utility for international users compared to tire-specific calculators
AutoCal: Automotive CalculatorContender
Tire Pressure CalculatorContender
Firestone AG TyresContender
Generator ERCContenderUnlock the head-to-head verdict: where this rival wins, and where it loses.
Access the full report for freeThe Analyst's Read
Key takeaways for Tire Size Fitment
Where is it heading?
The automotive utility market is consolidating around multi-purpose apps that offer telemetry and maintenance tracking, leaving single-purpose calculators exposed. Tire Size Fitment must address its localization gaps to maintain its relevance against these broader suites.
- Lack of imperial unit support forces manual conversions, which drives user churn in the high-value US automotive market.
- Recent updates focus on stability and minor language support, indicating the app is in maintenance mode rather than active growth.
The SWOT
- Graphical visualization engine provides immediate fitment answers
- Integration of brake caliper clearance data captures custom-build segment
Next best moves
Ship imperial unit toggle because US users cite it as a major limitation → increase retention
The counter-intuitive read
The app's lack of updates is not a…
Read the full takeFeature gaps
Odometer tracking (available in Fuel Calculator) +1
Since the last report: The app's competitive positioning has shifted to address monetization limitations and geographic visibility, while adding a new clearance calculator feature.
Bottom line
Tire Size Fitment provides high-utility technical precision, but the lack of imperial units and ad-only monetization limits its growth, so the PM should prioritize localization to capture the US market before competitors bundle these features into broader suites.
Unlock 1 critical friction, 1 market threat and the analyst’s take.
Access the full report for freeSources
- [1] App Store listing, source
Report last updated