TireLab vs Tire Calculator (Offset&Speed)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TireLab
This app helps you compare and visualize different tire and wheel configurations for your vehicle. It calculates key dimensions, checks for fitment issues, and provides technical references. Supports both Imperial and Metric units.
- Compare tire and wheel dimensions
- Visualize configurations with cutaway views
- Fitment calculator for vehicle compatibility
- Technical reference and glossary
- Imperial and Metric unit support
- Intuitive interface
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HOW TO USE TIRELAB: 1) Set wheel sizes 2) Compare and visualize differences Changing tires or rims on your vehicle? This is the app for you! TireLab is an advanced, yet VERY easy to use, tire and wheel calculator that allows the manipulation of the multiple dimensions of several tire and wheel combinations. It allows professionals, enthusiasts, and weekend mechanics the ability to examine, compare, and visualize multiple tire and wheel configurations in real time. Features: 1) Calculates, compares, and displays all key tire and wheel data points TIRE - Compatible rim sizes - Diameter - Difference - Distance per revolution (circumference) - Odometer error (difference in odometer) - Radius - Revolutions per mile - Revolutions per kilometer - Section (sidewall) height - Section width (tire width) - Size - Speedometer error (difference in speed) WHEEL - Backspace - Difference - Offset - Lip inset - Size 2) Tire/wheel configuration fitment calculator Provides the user the ability to identify vehicle fitment related issues that may potentially result from different tire and wheel configurations. - Axel/ride height - Brake component clearance - Fender (outside) clearance - Suspension (inside) clearance - Wheelwell clearance 3) Intuitive and easy to navigate interface TireLab provides for the ability to manipulate the key dimensions of both tires and wheels. If you desire to only utilize the tire modeling functionality you need only to adjust the tire measurements. All of the controls will automatically adjust to safe and compatible configuration thresholds. 4) Detailed scaled visual representations View, and compare, detailed representations of tire and wheel configurations. A unique "cutaway view" of the wheel provides the user with the ability to visualize and compare key tire and wheel measurements for multiple configurations. In addition, a unique "tire view" permits the user the ability to visualize and compare scale representations of different tire configurations. 5) Tire compatibility display Provides the user a list of compatible tire sizes and accurately indicates the differences in both tire width and tire diameter. 6) Tire and wheel technical reference Provides the user the ability to view codes, definitions, and technical specifications. -Tire construction -Load Index chart -Load Ranges -Speed Ratings -Tire types -Temperature Grades -Traction Grades -Treadwear Grades 7) Tire and wheel technical glossary Includes an extensive dictionary of tire and wheel technical terminology. 8) Imperial and Metric Full Imperial (standard) and Metric support. All information is displayed in both Imperial and Metric units.
Tire Calculator (Offset&Speed)
Easily calculate wheel offset and speedometer errors after tire changes. This tool helps determine changes in rim position, tread width, and actual speed versus displayed speed. It also offers GPS-based speedometer error measurement.
- Wheel offset calculation
- Speedometer error calculation
- GPS speedometer error measurement
- Rim position change calculation
- Tread width change calculation
- Actual speed vs. meter display
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Easily calculate the effects of wheel and tire size changes A convenient calculation tool for anyone considering wheel upgrades, tire size changes, or fitment adjustments. Simply enter your current and new specifications to quickly compare the impact on your vehicle. -Main Features -Wheel Comparison •Calculate inner rim position changes •Calculate outer rim position changes •Calculate tread width changes -Tire Comparison •Calculate speedometer error (%) •Compare indicated speed and actual speed •Vehicle-specific speedometer error can also be included in calculations -Speedometer Error Measurement •Accurate GPS-based speed measurement -Data Storage •Save comparison records -Important Notes Measurement results may vary depending on GPS reception and environmental conditions. Use measured values as a reference only. Actual wheel and tire dimensions may vary by manufacturer and model. Calculation results are for reference purposes only. Always consult a qualified professional before making vehicle modifications. The developer assumes no responsibility for any damages or issues resulting from the use of this application. -Specifications Wheel Offset Calculator •Rim Width (in): 3" to 16" (supports 0.25" increments) •Offset (mm): -60 to +70 •Backspacing (in): 3" to 13" Speedometer Error Calculator •Tire Width (mm): 125 to 405 •Aspect Ratio (%): 20 to 90, including 82 (R) •Supports 82-series radial tires commonly used on vans and light trucks •Rim Diameter (in): 10 to 32 •Direct Tire Diameter Input: 100 to 1500 mm or 4 to 60 in •Vehicle Speedometer Error Correction (%): -20 to +20 Speedometer Error Measurement •Measurable speed range: 10 to 200 km/h or 10 to 200 mph
Screenshots
Verdict
TireLab and Tire Calculator (Offset&Speed) both sit at 5.0 stars, but that hides the real split: 86% of Tire Calculator (Offset&Speed)'s written reviews are positive against 68% of TireLab's. TireLab's advantage is iOS requirement (18.0 vs 26.0). On price, rating, ratings volume and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
TireLab costs $1.99 and Tire Calculator (Offset&Speed) $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for TireLab against 5.0 for Tire Calculator (Offset&Speed). Both are backed by a comparable volume of ratings — 8 and 3 respectively. Written reviews are what separate them: 68% of TireLab's written reviews are positive against 86% of Tire Calculator (Offset&Speed)'s.
TireLab ships an update every 7 months, Tire Calculator (Offset&Speed) every 4 months. The most recent releases landed on November 6, 2026 and November 11, 2026 respectively.
| Parameter | TireLab | Tire Calculator (Offset&Speed) |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 5.0 (8 ratings) | 5.0 (3 ratings) |
| Positive reviews | 68.0% of reviews | 85.7% of reviews — better |
| Number of ratings | 8 — better | 3 |
| Update frequency | Every 7 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Weber | Satoshi Mori |
Customer experience
TireLab
Tire Calculator (Offset&Speed)
In-app purchases
TireLab
No in-app purchases
Tire Calculator (Offset&Speed)
No in-app purchases
Questions
Is TireLab free?
Is Tire Calculator (Offset&Speed) free?
Which has better reviews, TireLab or Tire Calculator (Offset&Speed)?
Do TireLab or Tire Calculator (Offset&Speed) have ads?
Which is updated more often, TireLab or Tire Calculator (Offset&Speed)?
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