Rockstone Transport RF09 215/65 R16 109R

Rockstone Transport RF09 – a model created for the most dynamic versions of passenger cars. It is characterized by a balanced nature: sporty handling is combined with fuel efficiency and high mileage.

Optimized Profile

Here, the surface curvature has been calculated so that the contact patch remains constant at any tilt angles. The larger the contact area with the asphalt, the higher the grip and the more precise the handling. But there is also a second effect: the even distribution of pressure across the contact patch prevents local overheating and pinpoint wear. As a result, the tire wears evenly across the entire surface, which directly increases its lifespan.

Large Blocks and Stiffness Ribs

The tread is non-directional and asymmetric. It is dominated by large longitudinal ribs with segmentation. This solution provides advantages:
- shear stiffness – elements do not deform during sharp maneuvers, the response to the steering wheel is instantaneous;
- resistance to abrasive wear – large components retain their shape longer, are not cut off at the micro level.

Wide Bidirectional Grooves

The model features a hydro-protective system of channels. They are oriented at different angles to create multiple paths for fluid evacuation. Even when the tread is worn by 50-60%, the depth of the grooves remains sufficient for effective water removal.

Stability and Reliability

The 9th frame is made of modern synthetic high-strength materials. In it, two opposing properties were achieved simultaneously:
- lightness – the less mass, the lower the rotational inertia and the less energy loss due to deformation. The result is fuel savings.
- stiffness – directional stability and handling accuracy are maintained even during sharp maneuvers.

Key Features of Rockstone Transport RF09:

- the model is aimed at drivers who require sporty handling;
- optimized profile – increased contact patch, even pressure distribution, reduced uneven wear;
- asymmetric tread with "ribs" – high shear stiffness, instantaneous response to the steering wheel, resistance to abrasive wear;
- effective moisture removal, minimal risk of aquaplaning even with significant tread wear.