275/45 R21 Firestone Roadhawk variants

Weight index

Select: 110110

Speed index

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

This combination is not available.

MFSNo

RunflatNo

Special: .

Firestone Roadhawk is a summer tyre made in total of 161 sizes, ranging from R15 to R15 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 275/45 R21 is 110mm wider than the narrowest dimension (165) and 20mm narrower than the widest one (295). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (275mm), which results in 123.75mm sidewall height. In 275/45 R21, there is only one possible speed index for Firestone Roadhawk - "Y", which is good for speeds up to 300 km/h. In 275/45 R21, Roadhawk usually competes against RainSport 5, which is a tyre from Uniroyal with a rating of 65%, compared to 57% of the Firestone in question.