Vehicle manufacturers understand that there is little reason to spend millions of dollars developing the ride and handling qualities of a new vehicle's suspension if they are going to omit integrating the influence of its Original Equipment tires. This has resulted in either completely new tire designs or fine-tuned versions of existing designs being engineered for every new car and light truck from the beginning of the vehicle's development process.

There was a time in America when it was thought that the only reasons a vehicle manufacturer chose Original Equipment tires were "how wide were the whitewalls" and "which manufacturer would sell their bias ply tires for the lowest price." Well even if that had been true, times have changed and neither whitewalls nor cheap bias ply tires are used on vehicles today.

Part of the reason for this is because tire comfort and tire performance directly correlate with the driver's overall vehicle satisfaction. Original Equipment tires play an integral role in achieving the vehicle's desired comfort and performance capabilities, and greatly influence the vehicle's personality. And as vehicles have evolved, so have OE tires. For the most part, today's vehicles are lighter, more fuel-efficient and more responsive than those built a decade ago. This has caused corresponding reductions in tire weight and rolling resistance, while enhancing the tire's handling capabilities.

Unfortunately even the best tires are still a compromise. This is because the current materials and manufacturing technologies that provide many desirable tire attributes are directly opposed to other desirable attributes. For example, a "hard" tread compound that could provide long wear and low rolling resistance would also reduce traction. An "aggressive" tread design that could better resist hydroplaning or provide enhanced snow traction would also generate more noise. And a "stiff" sidewall that could provide responsive handling and high-speed stability would also reduce ride comfort. These opposing goals require blending and balancing the tire's comfort and performance traits until they are optimized for the OE tire's intended vehicle application.

Each vehicle manufacturer prioritizes the areas that they feel are of greatest benefit to help their vehicles satisfy their drivers. For example, a vehicle manufacturer that offers a line of fuel-efficient vehicles may be able to place more emphasis on traction and less emphasis on lowering rolling resistance than a vehicle manufacturer that builds a line of larger, less fuel-efficient cars.

A tire's characteristics can be represented graphically in a "spider" chart (see below). These charts provide a visual means of presenting multiple performance characteristics to allow direct comparison of an existing tire's capabilities (usually established at the 100 level as a baseline) to the targets and/or realized performance levels for a new tire.

While the tire manufacturer's ultimate goal is to develop technology that allows them to expand the new tire's entire comfort and performance envelope in all directions compared to the original tire, frequently they are only able to expand the tire's capabilities in several areas without causing compromises that would result in less performance in other areas. This type of analysis allows confirmation of the accomplished improvements and any resulting compromises.