15 15 © TechSci Research Automotive Forecasting Methodology TechSci Research uses the combination of judgmental, associative and time series techniques for forecasting market data . Forecasting is done considering various quantitative as well as qualitative factors into consideration such as past years tire sales data, automobile production stats, macroeconomic factors including GDP growth/contraction, interest rates scenario and impact of COVID - 19 on vehicle sales ; tire production and sales in each of the countries covered in the report . The report co vers f i ve years historical market size data ( 2 016 - 2020 ) ; 202 1 is an estimated year with market data based on January to September 202 1 actual sales and forecast for the period between 202 2 and 202 6 , covering all the ASEAN Countries . TechSci Research has used judgmental, associative and time series techniques to forecast the tire sales data for the period between 202 2 and 202 6 . In Judgmental model, opinion from mid - level sales and production executives of leading tire and vehicle manufacturers to track OEM sales, leading tire dealers and distributors in each country and industry experts were collected to gauge how the tire industry will perform during the forecast period . In Associative model, the tire market was forecasted based on the identification of performance of related variables/drivers such as new vehicle sales, existing fleet size and macroeconomic indicators were used to predict the size of the tire market between 202 2 and 202 6 . Time series technique was used by observation and analysis of historical tire sales data by tracking it at regular intervals over a period of more than seven years . Both long - term movement of tire sales and short - term variations in tire sales data caused by unusual factors and circumstances were tracked and on the basis of these observations, future tire sales were estimated based on the past trends . TechSci Research uses its proprietary forecast model based on the above approach and regression analysis to forecast tire sales data with the help of excel forecast functions which forecast the data values based on the provided existing data values . Research Methodology