Dunlop DSST

Dunlop Self Supporting Technology (DSST) is the name given to Dunlop run on flat tyres. They are designed to carry on running when the tyre is punctured, the limit is 50 miles and Dunlop also say that you should not drive at speeds of over 55 mph.

The Dunlop DSST has many attributes to it some of them are as follows:

The construction of the sidewall has been stiffened so that it can carry the weight of the car even if there is no pressure in the tyre. The picture above illustrates this best, standard tyres would collapse with no air and perish if you tried to run them flat. This is because these tyres have very thin sidewalls. Where as the run flat would not loose shape even when driving at speed of 50mph because the sidewalls have been stiffened and beefed up. The downside to run flats is that the ride is fairly uncomfortable compared to standard tyres. A run flat doesn't have any flex in the sidewall and is more rigid because of the solid rubber ring in the sidewall. Driving over pot holes and jumps can be uncomfortable.

Dunlop does claim that their run flats have a better solid ring compound and this special compound allows the tyre to flex making the tyre unbreakable or indestructible. Dunlop claim when their runflat is running on zero pressure handling, acceleration, braking and steering control are unchanged.