255/40 R21 Michelin Pilot Sport 4 S variants

Weight index

Select: 102, 105102105

Speed index

Select: Select, Y (300 km/h)Y (300 km/h)

This combination is not available.

MFSNo

RunflatNo

Special: XL

Michelin Pilot Sport 4 S is a summer tyre made in total of 178 sizes, ranging from R18 to R18 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 255/40 R21 is 40mm wider than the narrowest dimension (215) and 60mm narrower than the widest one (315). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (255mm), which results in 102mm sidewall height. In 255/40 R21, there is only one possible speed index for Michelin Pilot Sport 4 S - "Y", which is good for speeds up to 300 km/h. In 255/40 R21, Pilot Sport 4 S usually competes against P ZERO PZ4, which is a tyre from Pirelli with a rating of 85%, compared to 86% of the Michelin in question.