345/30 R21 - Best summer tyres 2025 - market overview, tests, reviews
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Best summer tyres in tests (2025)
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The Turanza T005 was introduced in 2018, but still stands as a great tyre, offered in incredible 350 different sizes. It’s universal also in it’s properties - it’s a balanced mix of wet and dry performance with above-average rolling resistance.
| Shop | Product | Stock | Availability | Shipping | Price | Action |
|---|---|---|---|---|---|---|
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Potenza Sport RunFlat XL Lamborghini
- In stock
£605
|
Potenza Sport RunFlat XL Lamborghini | In stock | Free shipping | £605 |
Buy
tyres.pneus.online.uk
|
|
|
Bridgestone Potenza Sport RFT ( 345/30 ZR21 (111Y) XL L, runflat )
- In stock
£687
|
Bridgestone Potenza Sport RFT ( 345/30 ZR21 (111Y) XL L, runflat ) | In stock | Free shipping | £687 |
Buy
mytyres.co.uk
|
345/30 R21 tyre test Personalize
Best tyres in your size
Dry
1.
Bridgestone Turanza T005
77%
Wet
1.
Bridgestone Turanza T005
71%
Comfort
1.
Bridgestone Turanza T005
33%
Economy
1.
Bridgestone Turanza T005
94%
This is a preview of our comprehensive tyre test. The full test includes:
Detailed property breakdowns
Interactive sorting and filtering
Side-by-side comparisons
Did you know ...?
345/30 R21 doesn't belong to the most popular dimensions for summer tyres - there are 0 tyre models available, which can be compared to 155/60 R15, 170/60 R17, 160/60 R14. Let's break down the sizing - 30 is height of the tyre, which is calculated as 30% of the tyre width (345mm), which means the sidewall height has 103.5 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 2326.04 mm, which is very similar to 295/35 R21(2324.46 mm), 235/55 R19(2328.23 mm), 235/60 R18(2322.27 mm), 285/45 R19(2321.95 mm), 255/70 R15(2318.5 mm), 255/65 R16(2318.18 mm), 255/60 R17(2317.87 mm). There are multiple speed indexes available for summer tyres in 345/30 R21: Y(300km/h). The same goes for weight indexes: 111.
