Research Methodology ReplacementTireSales Replacement tire demand of a particular country is directly dependent on the country’s vehicle fleet size and historical vehicle sales. Replacement tire demand is calculated by multiplying vehicle fleet with replacement tire ratio, which is obtained by conducting a series of surveys with vehicle owners to understand the frequency of tire replacement, as it varies for different countries depending upon the country’s road conditions, climate, economic and regulatory policies, etc. The replacement ratio is expressed as a percentage. For example, in case of light duty truck, replacement ratio is considered to be 100% if four tires are replaced per vehicle per year. For instance, for light duty truck replacement tire demand calculation: Light Duty Truck X Replacement Ratio X No. of Tires = Replacement Tire Fleet Size (Volume) (%) Demand 100,000 X 19% X 4 = 76,000 Tires The calculated replacement tire demand data is further analyzed by TechSci Research through Delphi technique, i.e., multiple rounds of telephonic interviews with tire companies/dealers in Indonesia. The information collected is then cross-verified through industry experts and secondary sources, such as annual reports and paid databases to generate meaningful results. Total Tire Market Forecast OEM Tire Sales + Replacement Tire Sales = Total Tire Market Forecast For forecasting the numbers, we have used time series analysis along with regression analysis, followed by judgmental analysis. 12 Automotive © TechSci Research 12