Gripmax Pro Winter is a tyre made in total of 97 sizes, ranging from R16 to R16 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 305/30 R21 is 130mm wider than the narrowest dimension (175) and 20mm narrower than the widest one (325). 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 Gripmax Pro Winter - "V", which is good for speeds up to 240 km/h.
| Shop | Product | Stock | Availability | Shipping | Price | Action |
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| # | Name | Our rating | Tested in this dimension | Tested in same width dimension | Segment | Price |
|---|---|---|---|---|---|---|
| 1. | Continental Sportcontact 7 | Premium | £333 104 Y | |||
| 2. | Michelin Pilot Sport 4 S! Newer model available: Michelin Pilot Sport S 5 | Premium | £356 104 Y | |||
| 3. | Michelin PILOT ALPIN 5 | Premium | £432 104 V + 3 | |||
| 4. | Pirelli P ZERO PZ4 | Premium | £332 100 Y + 8 | |||
| 5. | Hankook ION Evo | Premium | £300 104 Y + 1 | |||
| 6. | Goodyear UltraGrip Performance Gen-1! Newer model available: GoodYear UltraGrip Performance+ | Premium | ||||
| 7. | Bridgestone Potenza Sport! Newer model available: Bridgestone Potenza Sport Evo | Premium | £361 104 Y | |||
| 8. | Falken Azenis Fk520 | Upper-middle | £249 104 Y | |||
| 9. | Hankook Ventus Prime 4 | Premium | £333 104 V + 1 | |||
| 10. | Yokohama Advan Sport V107 | Upper-middle | £248 104 Y |