Pirelli P Zero Winter is a winter tyre made in total of 85 sizes, ranging from R18 to R18 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 305/30 R21 is 70mm wider than the narrowest dimension (235) and -10mm narrower than the widest one (295). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (305mm), which results in 91.5mm sidewall height. In 305/30 R21, there is only one possible speed index for Pirelli P Zero Winter - "V", which is good for speeds up to 240 km/h.
| # | Name | Our rating | Tested in this dimension | Tested in same width dimension | Segment | Price |
|---|---|---|---|---|---|---|
| 1. | Michelin PILOT ALPIN 5 | Premium | £432 104 V + 3 | |||
| 2. | Goodyear UltraGrip Performance Gen-1! Newer model available: GoodYear UltraGrip Performance+ | Premium | £418 104 V | |||
| 3. | Hankook Ventus Prime 4 | Premium | £328 104 V + 1 |