# Combustion road vehicles and Rubber chemicals

Their prices have moved together.

Source page: https://www.materialinsights.org/links/combustion-road-vehicles-and-rubber-chemicals/

[Combustion road vehicles](https://www.materialinsights.org/energy/e_road_ice/) (energy) and [Rubber chemicals](https://www.materialinsights.org/chemicals/rubber_chemicals/) (chemical): 1 relationship.

## How they are linked

### 1. Price link: tyre demand

*Cost and price · Weak · Both ways*

Vehicle output and the existing fleet set tyre demand, and with it rubber chemical volumes. The vehicle proxy is a car price index, not output, and monthly moves correlate at -0.15, so it does not capture this demand link.

- **-0.15** monthly change correlation
- **0.22** 12-month change correlation
- **1.62** fitted elasticity

Built from the site data on production routes, energy flows, industry value chains, input-output tables and prices.