Tire Calculator (Offset&Speed) 3.3.1

The Tire Calculator offers a comprehensive solution for those needing to navigate the complexities of wheel and tire changes. This tool is particularly beneficial for calculating specifications accurately, ensuring an informed decision-making process.

Functionality Overview

1. Wheel Offset Calculation:
   • Enables selection of rim width and offset or backspace.
   • Provides measurements for inner and outer rim position changes (inches or mm).
   • Calculates changes in rim width (inches or mm) and tread (inches or mm).
2. Speedometer Error Calculation:
   • Selects tire size or allows direct input of outer diameter for automatic pre- and post-replacement calculations.
   • Computes speed error (%) between real speed and dashboard display.
   • Displays actual speed at a customizable rate (e.g., 40 mph or km/h).
   • Calculates travel distance over specified distances (e.g., 1000 miles or km).
   • Assesses changes in vehicle height (inches or mm) and accounts for existing vehicle errors in speed calculations.
3. Speedometer Error Measurement:
   • Utilizes GPS technology to compare speedometer readings with actual vehicle speed, measuring any discrepancies.
   • Results may vary based on measurement conditions.

Notable Features

• User-friendly screen design, facilitating ease of navigation.
• Simplified operating procedures for straightforward use.

Specifications

• Offset Calculations: Rim width from 3.5 J to 16 J; offset range from -60 mm to +70 mm; backspace between 3" to 13".
• Speed Error Calculations: Tire width from 135 to 405 mm; profile percentages from 20% to 85% (82% for R); wheel diameters from 10" to 32"; direct input for tire outer diameter ranging from 100 mm to 2000 mm (5" to 100"). Vehicle side error correction is possible within -30% to +30%.
• Speedometer Error Measurement: Measures speeds between 10 km/h to 300 km/h or mph.

Please Note:

Caution is advised, as errors can arise in calculations based on the specific wheel and tire brands used. It is recommended that users consult with professionals before making any modifications to specifications. The application creator disclaims any responsibility for discrepancies arising from these calculations.