Car Tyres

[sbellseb]

What do you look for in Tyres. For example a Renault Clio has GT 185/55V15S tyres, but when broken down, what does it all mean?

[kempie]

Here is an explanation of tyre ratings.

[sbellseb]

so what does the 15s at the end mean? I cant find that on the chart. Thanks.

[kempie]

S is the speed rating = 112 mph

[sbellseb]

Thanks for your help on this.

[KebabMeister]

Ref: Speed Rating. 

Although the speed rating of a tyre makes it theoretically safe to drive up to a certain speed, a tyre isn't designed to sustain high speeds for any length of time (tyre pressures change, tyre overheats, tyre blows out).  Additionally the Speed Rating takes into consideration both acceleration and braking forces on the tyre.  e.g.  a Speed Rating with a higher speed (V rated over S rated) would have a better acceleration/braking capacity than the other.