Enter the rear-end ratio and the transmission first gear ratio into the Starting-Line Ratio Calculator. The calculator will evaluate and display the Starting-Line Ratio.

## Starting-Line Ratio Formula

The following formula is used to calculate the Starting-Line Ratio.

**STLR = RER *TFG**

- Where STLR is the Starting-Line Ratio
- RER is the rear-end ratio
- TFG is the transmission first gear ratio

## How to Calculate Starting-Line Ratio?

The following example problems outline how to calculate Starting-Line Ratio.

Example Problem #1:

- First, determine the rear-end ratio.
- The rear-end ratio is given as: 2.5.

- Next, determine the transmission first gear ratio.
- The transmission first gear ratio is provided as: 5.3.

- Finally, calculate the Starting-Line Ratio using the equation above:

STLR = RER *TFG

The values given above are inserted into the equation below and the solution is calculated:

STLR = 2.5 *5.3 = 13.25

Example Problem #2:** **

For this problem, the variables required are provided below:

rear-end ratio = 1.5

transmission first gear ratio = 6

Test your knowledge using the equation and check your answer with the calculator above.

STLR = RER *TFG** = ?**