255/45 R18 Gt Radial Sportactive variants

Weight index

Select: 103103

Speed index

Select: Select, W (270 km/h)W (270 km/h)

This combination is not available.

MFSNo

RunflatNo

Gt Radial Sportactive is a tyre made in total of 15 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/45 R18 is 50mm wider than the narrowest dimension (205) and 0mm narrower than the widest one (255). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (255mm), which results in 114.75mm sidewall height. In 255/45 R18, there is only one possible speed index for Gt Radial Sportactive - "W", which is good for speeds up to 270 km/h.