Tire Log and Odometer Correction

Road Trip features a Tire Log that you can use to track your tire usage and to correct for non-standard tire and wheel sizes. You can use the Tire Log to record new tire purchases, or you can track when you switch between Winter and Summer Tires.

You can access the Tire Log by selecting Preferences > Advanced > Tires.

The Tire Log displays a list of all tires you have installed. When you install a new set of tires on your vehicle you can select New Tires to record that installation.

You can record the following properties with each tire installation:

• Name (such as tire brand or style)
• Installation date and odometer
• Tire size and distance correction factor
• Notes

This allows you to track how far and how long you have driven on a set of tires.

Tire Size Correction Factor

Your odometer readings can be affected by tire sizes that are smaller or larger than your vehicle's standard tires. You can set a correction factor to account these inaccuracies in your odometer readings.

Use the following formula to determine your correction factor:

For example:

Odometer Reading:	48.5 miles
Actual Distance:	50 miles
Correction Factor:	+3.09 %

Road Trip will apply the correction factor to all relevant statistics, including total distance, distance per day, cost per mile, and fuel efficiency.

Note that different tires can have different correction factors (e.g., Winter and Summer tires). The tire's installation odometer determines how and when the correction factor is applied to your fuel entries.

Motorcycle Mode

If you ride a motorcycle, you can enable Road Trip's Motorcycle Mode to record your front and rear tire usage separately. This will allow you to specify different tire sizes for your front and rear tires.

To enable Motorcycle Mode, select the "Motorcycle" switch at the bottom of the Tire Log screen. The Tire List will then divide into two sections, Front and Rear.