305/25 R21 - Best summer tyres 2026 - market overview, tests, reviews
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Best summer tyres in tests (2026)
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Tests from 2025
Tests from 2023
Tests from 2022
Tests from 2021
Pilot Sport 4S is the sportier version of the Pilot Sports and the most sporty one that still cares about the wet performance, which is it's strong suite. It's usually expensive, but also a guarantee of a great performance tyre.
| Shop | Product | Stock | Availability | Shipping | Price | Action |
|---|---|---|---|---|---|---|
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Michelin Pilot Sport 4S ( 305/25 ZR21 (98Y) XL with rim protection ridge (FSL) )
- In stock
£328
|
Michelin Pilot Sport 4S ( 305/25 ZR21 (98Y) XL with rim protection ridge (FSL) ) | In stock | Free shipping | £328 |
Buy
mytyres.co.uk
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|
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Pilot Sport 4 S XL
- In stock
£361
|
Pilot Sport 4 S XL | In stock | Free shipping | £361 |
Buy
tyres.pneus.online.uk
|
305/25 R21 tyre test Personalize
Best tyres in your size
Dry
1.
Michelin Pilot Sport 4 S
91%
Wet
1.
Michelin Pilot Sport 4 S
77%
Comfort
1.
Michelin Pilot Sport 4 S
48%
Economy
This is a preview of our comprehensive tyre test. The full test includes:
Detailed property breakdowns
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Side-by-side comparisons
Did you know ...?
305/25 R21 doesn't belong to the most popular dimensions for summer tyres - there are 5 tyre models available, which can be compared to 155/60 R15, 170/60 R17, 160/60 R14. Let's break down the sizing - 25 is height of the tyre, which is calculated as 25% of the tyre width (305mm), which means the sidewall height has 76.25 mm. The wheel diameter is R21, which means it fits to a 21 inch/533.4mm diameter wheel. The total circumference of the tyre is 2154.82 mm, which is very similar to 215/65 R16(2154.82 mm), 255/35 R20(2156.7 mm), 255/40 R19(2157.02 mm), 225/45 R19(2152.31 mm), 255/45 R18(2157.33 mm), 295/30 R20(2151.99 mm), 185/75 R16(2148.54 mm). There are multiple speed indexes available for summer tyres in 305/25 R21: Y(300km/h). The same goes for weight indexes: 98, 127.
