Below is the data from the Sport Auto all season tire test. Their test vehicle was a sporty Hyundai i20N, and they included named reference summer and winter tires, which is always nice (even if the summer tire was the Asymmetric 3, a tire originally launched over 10 years ago!)

Another key point is that the wet tests were done at cold conditions, "significantly below ten degrees", and around 7c for wet braking. Many of the all season tires out performed the summer tire, however as the summer tire is not current it's hard to say whether a modern summer tire would have performed better.

The full data is below.

Test Publication:

https://www.auto-motor-und-sport.de/sport-auto-1/

Test Size: 215/40 R18

Tires Tested: 6 tires

Test Categories:
5 categories (11 tests)

View Test Summary

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Test Category	Best Performer	Worst Performer	Difference
Dry (2 tests)
Dry Braking	▲ Goodyear Eagle F1 Asymmetric 3: 35.3 M	▼ Goodyear UltraGrip Performance 3: 43.4 M	8.1 M (18.7%)
Dry Handling	▲ Goodyear Eagle F1 Asymmetric 3: 101.2 Km/H	▼ Goodyear UltraGrip Performance 3: 97.6 Km/H	3.6 Km/H (3.7%)
Wet (4 tests)
Wet Braking	▲ Bridgestone Turanza All Season 6: 31.9 M	▼ Goodyear Eagle F1 Asymmetric 3: 35.2 M	3.3 M (9.4%)
Wet Handling	▲ Continental AllSeasonContact 2: 79.9 Km/H	▼ Michelin CrossClimate 2: 77.4 Km/H	2.5 Km/H (3.2%)
Straight Aqua	▲ Goodyear UltraGrip Performance 3: 77.2 Km/H	▼ Vredestein Quatrac Pro Plus: 71.1 Km/H	6.1 Km/H (8.6%)
Curved Aquaplaning	▲ Goodyear UltraGrip Performance 3: 2.67 m/sec2	▼ Goodyear Vector 4Seasons Gen 3: 2.06 m/sec2	0.6 m/sec2 (29.6%)
Snow (3 tests)
Snow Braking	▲ Goodyear UltraGrip Performance 3: 24.4 M	▼ Goodyear Eagle F1 Asymmetric 3: 52.9 M	28.5 M (53.9%)
Snow Traction	▲ Goodyear UltraGrip Performance 3: 1.57 N	▼ Goodyear Eagle F1 Asymmetric 3: 0.35 N	1.2 N (348.6%)
Snow Handling	▲ Goodyear UltraGrip Performance 3: 50.4 Km/H	▼ Goodyear Eagle F1 Asymmetric 3: 14.3 Km/H	36.1 Km/H (252.4%)
Comfort (1 tests)
Noise	▲ Continental AllSeasonContact 2: 71.2 dB	▼ Goodyear Eagle F1 Asymmetric 3: 73.1 dB	1.9 dB (2.6%)
Value (1 tests)
Rolling Resistance	▲ Continental AllSeasonContact 2: 8 kg / t	▼ Vredestein Quatrac Pro Plus: 9.8 kg / t	1.8 kg / t (18.4%)

Dry

In dry braking from 100-0 km/h, the summer reference tire (Goodyear Eagle F1 Asymmetric 3) led the pack with a stopping distance of 35.3 meters. The worst performing tire was the winter reference tire (Goodyear UltraGrip Performance 3) at 43.4 meters - an 8.1 meter difference that could be crucial in emergency situations. The all-season tires fell between these two extremes, with the Michelin CrossClimate 2 coming closest to summer tire performance at 37.2 meters.

The dry handling test showed similar trends, with the summer reference tire again setting the benchmark at 101.2 km/h average speed. The winter reference tire was slowest at 97.6 km/h, 3.6 km/h behind the leader. The Continental AllSeasonContact 2 performed best among the all-season tires with 100.4 km/h, showing that modern all-season tires can deliver handling performance close to dedicated summer tires in dry conditions.

Wet

The wet tests revealed interesting results, with the all-season tires often outperforming both reference tires. In wet braking from 80-0 km/h, the Bridgestone Turanza All Season 6 stopped in just 31.9 meters, while the summer reference tire needed 35.2 meters - a substantial 3.3 meter difference. The winter reference tire landed in the middle of the pack at 34.3 meters.

Wet handling showed the Continental AllSeasonContact 2 leading at 79.9 km/h, with both reference tires posting identical speeds of 77.8 km/h. The 2.5 km/h spread from best to worst (Michelin CrossClimate 2 at 77.4 km/h) was relatively small, suggesting modern all-season tires have achieved good wet handling balance.

In aquaplaning tests, the winter reference tire excelled, leading both straight aquaplaning at 77.2 km/h and curved aquaplaning at 2.67 m/s². The summer reference performed surprisingly well in second place for both tests. The all-season tires generally performed worse, with the Vredestein Quatrac Pro Plus showing particular weakness in straight aquaplaning at 71.1 km/h.

Snow

The snow tests demonstrated the vast difference between summer and winter tires in cold conditions. The winter reference dominated all snow tests, stopping from 50-5 km/h in just 24.4 meters compared to the summer tire's dangerous 52.9 meters - more than double the distance. Snow handling showed an even more dramatic gap, with the winter tire achieving 50.4 km/h versus the summer tire's unsafe 14.3 km/h.

The all-season tires performed respectably in snow, with most achieving around 90% of the winter tire's performance. The Hankook Kinergy 4S2 was particularly strong across all snow tests, showing that all-season tires can provide viable winter performance for moderate climates.

Comfort

For noise, the Continental AllSeasonContact 2 was quietest at 71.2 dB, while the summer reference was loudest at 73.1 dB - a noticeable 1.9 dB difference./

Value

Rolling resistance testing showed the Continental AllSeasonContact 2 and Michelin CrossClimate 2 leading at 8.0 kg/t, with the Vredestein trailing at 9.8 kg/t. Both reference tires performed well in this metric, showing that specialized seasonal tires don't necessarily compromise efficiency.

Results

1st: Continental AllSeasonContact 2
215/40 R18 89W EU Label: C/B/72 Weight: 8.49kgs Tread: 7.7mm 3PMSF: yes Price: 156.00	Test # Result Best Difference % Dry Braking 4th 39.1 M 35.3 M +3.8 M 90.28% Dry Handling 2nd 100.4 Km/H 101.2 Km/H -0.8 Km/H 99.21% Wet Braking 4th 33.7 M 31.9 M +1.8 M 94.66% Wet Handling 1st 79.9 Km/H 100% Straight Aqua 6th 72.5 Km/H 77.2 Km/H -4.7 Km/H 93.91% Curved Aquaplaning 4th 2.25 m/sec2 2.67 m/sec2 -0.42 m/sec2 84.27% Snow Braking 4th 26.5 M 24.4 M +2.1 M 92.08% Snow Traction 5th 1.44 N 1.57 N -0.13 N 91.72% Snow Handling 3rd 48.8 Km/H 50.4 Km/H -1.6 Km/H 96.83% Noise 1st 71.2 dB 100% Rolling Resistance 1st 8 kg / t 100% Safe and dynamic on snow, very balanced and secure on wet asphalt. Very low rolling resistance. While high speeds possible in dry handling, slightly limited lateral grip at the rear axle. Test Winner. Read Reviews
2nd: Hankook Kinergy 4S2
215/40 R18 89V EU Label: C/B/72 Weight: 8.45kgs Tread: 8mm 3PMSF: yes Price: 126.00	Test # Result Best Difference % Dry Braking 7th 42.2 M 35.3 M +6.9 M 83.65% Dry Handling 3rd 99.8 Km/H 101.2 Km/H -1.4 Km/H 98.62% Wet Braking 2nd 32.7 M 31.9 M +0.8 M 97.55% Wet Handling 2nd 79.7 Km/H 79.9 Km/H -0.2 Km/H 99.75% Straight Aqua 3rd 75.2 Km/H 77.2 Km/H -2 Km/H 97.41% Curved Aquaplaning 3rd 2.42 m/sec2 2.67 m/sec2 -0.25 m/sec2 90.64% Snow Braking 2nd 26 M 24.4 M +1.6 M 93.85% Snow Traction 2nd 1.5 N 1.57 N -0.07 N 95.54% Snow Handling 2nd 49.6 Km/H 50.4 Km/H -0.8 Km/H 98.41% Noise 2nd 71.5 dB 71.2 dB +0.3 dB 99.58% Rolling Resistance 4th 8.5 kg / t 8 kg / t +0.5 kg / t 94.12% Outstanding grip and safe dynamics on both snow-covered and wet roads. Longer braking distances and slight overall deficits on dry, cold asphalt. Very Good. Read Reviews
3rd: Bridgestone Turanza All Season 6
215/40 R18 89Y EU Label: C/B/70 Weight: 8.63kgs Tread: 7.3mm 3PMSF: yes Price: 149.00	Test # Result Best Difference % Dry Braking 3rd 38 M 35.3 M +2.7 M 92.89% Dry Handling 4th 99.6 Km/H 101.2 Km/H -1.6 Km/H 98.42% Wet Braking 1st 31.9 M 100% Wet Handling 6th 77.8 Km/H 79.9 Km/H -2.1 Km/H 97.37% Straight Aqua 5th 74.2 Km/H 77.2 Km/H -3 Km/H 96.11% Curved Aquaplaning 6th 2.13 m/sec2 2.67 m/sec2 -0.54 m/sec2 79.78% Snow Braking 5th 26.9 M 24.4 M +2.5 M 90.71% Snow Traction 4th 1.48 N 1.57 N -0.09 N 94.27% Snow Handling 5th 47.7 Km/H 50.4 Km/H -2.7 Km/H 94.64% Noise 6th 72.5 dB 71.2 dB +1.3 dB 98.21% Rolling Resistance 4th 8.5 kg / t 8 kg / t +0.5 kg / t 94.12% Secure cornering grip and balanced, albeit slightly nervous handling on snow. Very good braking performance on all surfaces. Could offer more precise steering and better cornering grip in wet conditions. Very Good. Read Reviews
4th: Michelin CrossClimate 2
215/40 R18 89V EU Label: C/B/71 Weight: 8.6kgs Tread: 6.6mm 3PMSF: yes Price: 173.00	Test # Result Best Difference % Dry Braking 2nd 37.2 M 35.3 M +1.9 M 94.89% Dry Handling 7th 99.2 Km/H 101.2 Km/H -2 Km/H 98.02% Wet Braking 5th 34.1 M 31.9 M +2.2 M 93.55% Wet Handling 8th 77.4 Km/H 79.9 Km/H -2.5 Km/H 96.87% Straight Aqua 4th 75 Km/H 77.2 Km/H -2.2 Km/H 97.15% Curved Aquaplaning 5th 2.22 m/sec2 2.67 m/sec2 -0.45 m/sec2 83.15% Snow Braking 3rd 26.3 M 24.4 M +1.9 M 92.78% Snow Traction 3rd 1.49 N 1.57 N -0.08 N 94.9% Snow Handling 3rd 48.8 Km/H 50.4 Km/H -1.6 Km/H 96.83% Noise 5th 71.9 dB 71.2 dB +0.7 dB 99.03% Rolling Resistance 1st 8 kg / t 100% Strong grip, precise and dynamic on snow, fairly balanced in wet conditions, strong braking when dry. Particularly low rolling resistance. Significantly delayed turn-in when wet, sluggish in dry conditions. Very Good. Read Reviews    Buy from £136.12
5th: Goodyear Vector 4Seasons Gen 3
215/40 R18 89W EU Label: C/B/72 Weight: 8.63kgs Tread: 7.9mm 3PMSF: yes Price: 143.00	Test # Result Best Difference % Dry Braking 5th 41.7 M 35.3 M +6.4 M 84.65% Dry Handling 6th 99.4 Km/H 101.2 Km/H -1.8 Km/H 98.22% Wet Braking 7th 34.5 M 31.9 M +2.6 M 92.46% Wet Handling 4th 78.8 Km/H 79.9 Km/H -1.1 Km/H 98.62% Straight Aqua 7th 72 Km/H 77.2 Km/H -5.2 Km/H 93.26% Curved Aquaplaning 7th 2.06 m/sec2 2.67 m/sec2 -0.61 m/sec2 77.15% Snow Braking 6th 27.1 M 24.4 M +2.7 M 90.04% Snow Traction 6th 1.4 N 1.57 N -0.17 N 89.17% Snow Handling 6th 47.5 Km/H 50.4 Km/H -2.9 Km/H 94.25% Noise 7th 72.6 dB 71.2 dB +1.4 dB 98.07% Rolling Resistance 6th 8.7 kg / t 8 kg / t +0.7 kg / t 91.95% Safe, easily controllable handling with slight understeer in snow and wet conditions. Somewhat longer braking distances in wet conditions, not particularly efficient, high rolling noise, increased rolling resistance. Good. Read Reviews    Buy from £144.18
6th: Vredestein Quatrac Pro+
215/40 R18 89Y EU Label: D/B/72 Weight: 9.8kgs Tread: 7.6mm 3PMSF: yes Price: 142.00	Test # Result Best Difference % Dry Braking 5th 41.7 M 35.3 M +6.4 M 84.65% Dry Handling 5th 99.5 Km/H 101.2 Km/H -1.7 Km/H 98.32% Wet Braking 3rd 32.8 M 31.9 M +0.9 M 97.26% Wet Handling 5th 78.2 Km/H 79.9 Km/H -1.7 Km/H 97.87% Straight Aqua 8th 71.1 Km/H 77.2 Km/H -6.1 Km/H 92.1% Curved Aquaplaning 7th 2.06 m/sec2 2.67 m/sec2 -0.61 m/sec2 77.15% Snow Braking 7th 29.3 M 24.4 M +4.9 M 83.28% Snow Traction 7th 1.34 N 1.57 N -0.23 N 85.35% Snow Handling 7th 45.9 Km/H 50.4 Km/H -4.5 Km/H 91.07% Noise 2nd 71.5 dB 71.2 dB +0.3 dB 99.58% Rolling Resistance 8th 9.8 kg / t 8 kg / t +1.8 kg / t 81.63% Good braking and secure cornering grip in wet conditions, high rolling comfort. Reduced grip levels and load-change sensitivity on snow, delayed turn-in on wet and dry asphalt, very high rolling resistance. Good. Read Reviews
Reference Tire: Goodyear Eagle F1 Asymmetric 3
215/40 R18 89Y EU Label: C/B/72 Weight: 9.15kgs Tread: 7.1mm 3PMSF: no Price: 181.00	Test # Result Best Difference % Dry Braking 1st 35.3 M 100% Dry Handling 1st 101.2 Km/H 100% Wet Braking 8th 35.2 M 31.9 M +3.3 M 90.63% Wet Handling 6th 77.8 Km/H 79.9 Km/H -2.1 Km/H 97.37% Straight Aqua 2nd 75.4 Km/H 77.2 Km/H -1.8 Km/H 97.67% Curved Aquaplaning 2nd 2.63 m/sec2 2.67 m/sec2 -0.04 m/sec2 98.5% Snow Braking 8th 52.9 M 24.4 M +28.5 M 46.12% Snow Traction 8th 0.35 N 1.57 N -1.22 N 22.29% Snow Handling 8th 14.3 Km/H 50.4 Km/H -36.1 Km/H 28.37% Noise 8th 73.1 dB 71.2 dB +1.9 dB 97.4% Rolling Resistance 3rd 8.3 kg / t 8 kg / t +0.3 kg / t 96.39% Strong performance typical of summer tires on wet and dry roads - despite cool temperatures. High steering precision and dynamics. Unsuitable for winter roads, poor wet grip at low temperatures below +10°C, offers less rolling comfort. Read Reviews    Buy from £115.96
Reference Tire: Goodyear UltraGrip Performance 3
215/40 R18 89V EU Label: C/C/71 Weight: 8.08kgs Tread: 8.3mm 3PMSF: yes Price: 174.00	Test # Result Best Difference % Dry Braking 8th 43.4 M 35.3 M +8.1 M 81.34% Dry Handling 8th 97.6 Km/H 101.2 Km/H -3.6 Km/H 96.44% Wet Braking 6th 34.3 M 31.9 M +2.4 M 93% Wet Handling 3rd 78.9 Km/H 79.9 Km/H -1 Km/H 98.75% Straight Aqua 1st 77.2 Km/H 100% Curved Aquaplaning 1st 2.67 m/sec2 100% Snow Braking 1st 24.4 M 100% Snow Traction 1st 1.57 N 100% Snow Handling 1st 50.4 Km/H 100% Noise 4th 71.7 dB 71.2 dB +0.5 dB 99.3% Rolling Resistance 7th 8.8 kg / t 8 kg / t +0.8 kg / t 90.91% Winter-typical strong performance on snow, safe wet characteristics, outstanding aquaplaning safety compared to summer or all-season tires. Longer braking distances on wet and dry roads, less precise and direct handling, increased rolling resistance. Read Reviews