What's New

• Decreased minimum tire width to allow for motorcycle metric tires
• Increased maximum aspect ratio to 100 for motorcycle knobby tires
• Decreased minimum aspect ratio from 20 to 10
• Decreased minimum rim size from 8 inches to 4

App Description

*** 25% off sale! Introductory release of universal native iPad/iPhone update! *** Own a car or truck? Need to replace tires? TireSizer is an easy and fun to use tire size calculator and provides other useful information about your vehicle's tires. You can use the input sliders or keyboard text labels to quickly calculate the height of your vehicle's tires and axles when you want to replace your tires or rims with wider or narrower sizes. Or taller or shorter sizes to raise or lower your vehicle.

TireSizer uses your passenger or light truck tire size data such as P235/75/R15 (tread width, aspect ratio and rim diameter).

TireSizer also works with flotation truck tire sizes such as 31x10.5R16, high flotation agricultural tires 66x44.00-25, high flotation forestry tires 68x70.00-32, and large P-metric flotation tires 700/55-34 and 850/50-30.

FEATURES

• Automatically calculates the net size difference between 2 tires to give you useful final numbers, including the percentage difference.

• Interactive input sliders allow you to test different numbers and see what-if answers instantly.

• Converts flotation tire sizes to standard P-metric sizes, vice versa, and instantly back and forth.

• Calculates:
- Tire heights
- Vehicle's axle center height
- Tire widths
- Distance the tire travels per each revolution
- Number of revolutions per mile or kilometer
- Odometer and tire size % comparison of new sizes to existing sizes
- Sample speed comparison of new tires to existing tires (60 mph or 100 km)

• Shows results in imperial units or metric units.

• Includes several screens with tire reference data which you access by touching the round information icon on the front screen:
- Tire maintenance suggestions
- Abbreviations codes
- Load rating codes
- Speed rating codes
- Traction rating codes
- Temperature rating codes
- Treadwear rating codes

Partial Revision History:

v3.1
• Decreased minimum tire width to allow for motorcycle metric tires
• Increased maximum aspect ratio to 100 for motorcycle knobby tires

v3.0
• Redesigned as universal app with native iPad support!
• For metric users, now remembers your Imperial / Metric setting
• Added Tire Width calculations

v2.5
• Revised odometer multiplication factor label to odometer/size % to clarify that this is the same as the % comparison of new tire sizes to existing sizes
• Updated odometer's metric speed label from km to kmh

v2.4
• Fixed Info screen's "More Apps" to only show apps by Lee Design Services

v2.3
• Changed odometer error % to odometer multiplication factor
• Added sample speed conversion (60 mph or 100 km)

v2.2
• Updated graphics for Retina Display on iPhone 4
• Fully supports through iOS4.1, but no longer supports iOS2. Please upgrade to iOS3 or iOS4.

v2.1
• Added ability to quickly convert from flotation tire sizes to standard P-metric sizes. And also instantly back and forth!
• Added slider animation when you change the flotation switch on or off. This allows you to easily adjust the slider results numbers higher or lower.
• For widths over 405mm and rims over 20 inches, use the yellow manual input boxes. This frees up the sliders for the more common widths and rims.
• Added a red Reset button so that you can reset the sliders and numbers back to the original defaults without having to quit the app first

v2.0
• Added ability to use flotation truck tires such as 31x10.5R16
• Added ability to use high flotation agricultural tires such as 66x44.00-25
• Added ability to use high flotation forestry tires such as 68x70.00-32 and 700/55-34
• Added ability to use high flotation farm tires such as 73x44.00-32 and 850/50-30
• Added ability to quickly convert from standard P-metric tire sizes to flotation sizes

v1.1:
• Added compatibility with iPhone OS 3.0

App Changes

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