SPORT FORCE: OGT 3D (OPTIMAL GROOVE TECHNOLOGY)
The OGT-3D technology is an upgrade to tread groove design technology of optimum functionality and optimum characteristics in all riding conditions.
The technology is featured by:
- Optimum tread groove direction – grooves follow the direction of the highest load during the ride, by way of which the greatest possible road grip at cornering is achieved as tread grooves do not interrupt the lines of force and do not deform the tyre tread, while at the same time the effect of saw-tooth tyre wear is reduced. Special connection ribs are added on places where the tread grooves are the widest to connect the grooves’ sides. In this way, a local deformation of the tyre tread is further decreased, which results in a reduced saw-tooth tread wear effect.
- Optimum groove depth direction – the groove depth follows the actual tyre tread wear. When driving on the road, the front tyre wears triangularly, meaning that the medium section of the tyre tread is less worn out than its lateral section. Tyres thus become unfit for use despite a sufficient useful tread groove depth in the medium section. However, in the case of the rear tyre in road use, the tyre tread wear is the greatest in the medium tread section and it reduces towards the edge. Tyres thus become unsuitable for use when tyre tread depth in the medium section is reduced to reach the specified limit, even though the tyre edge still demonstrates a sufficient depth. In the Sport Force design, the tread groove depth follows the shape of the tyre tread wear: in the case of the front tyre, the groove depth in the medium section is lower, then it increases and towards the edge of the tread pattern it reduces again and gradually fades to a slick tyre ; in the case of the rear tyre, the tyre tread depth is the greatest in the medium section, then it gradually reduces towards the edge and it fades to a slick tyre in its utmost section where the road grip has to be the highest.
- Less overheating of a compound – the connecting ribs enlarge the active surface needed for heat conduction during driving in the sections of the increased local deformation, which leads to a higher heat generation.