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305/30 R21 Goodyear UltraGrip Performance Gen-1 variants
Goodyear UltraGrip Performance Gen-1 is a winter tyre made in total of 99 sizes, ranging from R15 to R15 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 305/30 R21 is 110mm wider than the narrowest dimension (195) and -30mm narrower than the widest one (275). 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 Goodyear UltraGrip Performance Gen-1 - "V", which is good for speeds up to 240 km/h.
Goodyear UltraGrip Performance Gen-1 is made in 99 sizes, starting from 195/50 R15 up to 275/40 R22.
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305/30 R21 - Best winter tyres (according to tests)
| # | Name | Our rating | Tested in this dimension | Tested in same width dimension | Segment | Price |
|---|---|---|---|---|---|---|
| 1. | Michelin PILOT ALPIN 5 | Premium | £582 104 V + 1 | |||
| 2. | Goodyear UltraGrip Performance Gen-1! Newer model available: GoodYear UltraGrip Performance+ | Premium | £513 104 V |