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Syron 365 Days

Touring All Season Winter rated

The Syron 365 Days is a Touring All Season tyre designed to be fitted to Passenger Cars.

The quick answer

Owners say 84% from 2 owner reviews Read the reviews
Tests say 8th average finish across 1 independent tests Latest: P8 of 8 · 2017 See every test
Strengths & weaknesses Dry, Snow Value Relative to its rivals across every test we hold

Built from every independent test result and vetted owner review we hold for this tyre - the evidence is all further down the page. Data updated January 2025.

  • 2owner reviews
  • 40,000miles driven
  • 1professional tests
  • 14sizes available
Syron 365 Days 1 photos

Tyre Reviews Score

Syron 365 Days

3.2/10

Better than 2% of all-season tyres

  • Limited Confidence
  • 1 test
  • 2 owner reviews
Scores of the 193 all-season tyres we have tested

How this score is built

Better than Weight
Independent tests1 test · 1 publication · 2017 2% 100%
Owner reviewsFewer than 5 reviews, so they do not count yet – 0%
Combined 2% 3.2

A fixed curve turns the combined figure into the 0 to 10 score, so roughly the top 10% of a group score 9 or more.

Category by category

How it compares with other all-season tyres in each area, and how much each area counts. 50 is the middle of the group.

Category Better than Weight Tests
WetBraking, handling and aquaplaning in the wet 4% 32% 1
DryBraking and handling on dry roads 23% 25% 1
SnowBraking, traction and handling on snow 13% 23% 1
IceBraking, traction and handling on ice Not tested, counted as average 14% –
ValueWear, efficiency and cost 1% 7% 1

Faded bars rest on one or two tests.

By discipline

The same results grouped by what the tyre was doing. They are not counted a second time.

BrakingEvery braking test, on any surface 15% 1
HandlingEvery handling test, on any surface 4% 1

Confidence

  1. Limited
  2. Medium
  3. High

Its own test results decide 84% of the test figure. The other 16% is the average for its group, and it shrinks as more tests arrive.

High needs at least 3 tests, with its own results deciding 90% or more. Medium needs 2 tests and 70%. Anything less is Limited: expect the number to move as tests arrive.

The tests behind it

  1. 2017 2017 Auto Bild All Season Tyre Test Auto Bild · 225/50 R17 P8 / 8
All Tests
View Test Results
1 Tests
0 Test Wins
8th Average
8th Best
8th Worst
The latest test

2017 Auto Bild All Season Tyre Test P8 of 8

Weak: Wet Braking, Wet Handling, Snow Braking, Snow Handling, Rolling Resistance Winner: Michelin CrossClimate

YearTestResultAward
20172017 Auto Bild All Season Tyre TestAuto Bild · 225/50 R17P8 / 8
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Dimensions & Label Scores
View All

Size Range14 sizes available

165-225Width40-70Profile13-18Rim82-99 H-VLoad/Speed Index2026First On Market

EU Label

Noise

71dB

3PMSF on every size

Popular sizes225/45 R17
Frequently Asked Questions
How good is the Syron 365 Days in the wet?
Across the 1 wet-braking test it has featured in, the Syron 365 Days stops 19.8% longer than premium rivals, 14.9% longer than mid-range rivals and 14.7% longer than budget rivals. It has a Tyre Reviews wet score of 4/100, and owners rate it 8.5/10 in the wet from 2 reviews.
How good is the Syron 365 Days in the dry?
Across the 1 dry-braking test it has featured in, the Syron 365 Days stops 3.6% longer than premium rivals, 0.7% longer than mid-range rivals and 4.5% longer than budget rivals. It has a Tyre Reviews dry score of 23/100, and owners rate it 8.5/10 in the dry from 2 reviews.
How good is the Syron 365 Days in the snow?
Across the 1 snow-braking test it has featured in, the Syron 365 Days stops 14.5% longer than premium rivals, 14.9% longer than mid-range rivals and 19.2% shorter than budget rivals. It has a Tyre Reviews snow score of 13/100.
How fuel efficient is the Syron 365 Days?
Across the 1 test measuring rolling resistance, the Syron 365 Days's rolling resistance is 32.8% higher than premium rivals, 21.2% higher than mid-range rivals and 37.5% higher than budget rivals.
What is the Syron 365 Days's EU tyre label rating?
Across its range, the Syron 365 Days most commonly carries EU label ratings of E for fuel efficiency, B for wet grip and 71 dB for noise.
More questions about the Syron 365 Days (1)
What sizes does the Syron 365 Days come in?
The Syron 365 Days is available in 14 sizes, ranging from 165-225/40-70 R13-18.
Owner Questions
Ask a question
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Syron 365 Days Owner Reviews

Review this tyre

Owner ratings averaged from 2 ratings

  • Owner score 84%
  • Wear 90%
  • Dry Grip 85%
  • Wet Grip 85%
  • Road Feedback 80%
  • Handling 80%
  • Comfort 75%

All 2 Syron 365 Days reviews

Score spread across 2 written reviews
78%
Member
This tyres were under my car when I bought it. First I thought: never heard of the brand, must be sh*t. But I'm really suprised by this tyres. They are really good actually. Very good grip on wet and dry, a bit vague feedback, but goot handling. They also last very long, but I don't know how many kilometers this were already on the car.
Now they are getting towards there end of life (almost no tread left) and start to cup and make some more noise. Can't blame them, they did a very good job! I think I'm going for them again.
This owner's scores
  • Dry Grip 8
  • Wet Grip 8
  • Road Feedback 7
  • Handling 8
  • Comfort 7
  • Buy again 9
Helpful 742
87%
Member
I've had these tyres for over 40,000 miles now and it still had tread to last for a while, i would recommend it to everyone out there. A very good grip in wet and dry weather conditions with hardly any road noise. I will now buy a set of Syron Race 1 Plus summer tyres. Definitely worth the price.
This owner's scores
  • Dry Grip 9
  • Wet Grip 9
  • Road Feedback 9
  • Handling 8
  • Wear 9
  • Comfort 8
  • Buy again 9
Helpful 588

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