The testing heroes at Sport Auto have answered a question we've all wanted to know the answer to! Just how good are all season tires in large wheel sizes on a performance vehicle?
To answer this, Sport Auto have tested six of the best all season tires, and included a NAMED summer and winter tire, the Bridgestone Potenza Sport UUHP summer tire, and the test winning Bridgestone Blizzak LM005 winter tire.
What can we learn? Naturally the summer tire wins the dry tests, that's no surprise, but there's quite a big delta in dry braking and a huge difference in dry handling! The winter also places as you'd expect in dry handling, although it does beat the Goodyear Vector 4Seasons G3 in dry braking, which is always a weakness of that all season tire.
Dry Braking
Spread: 7.20 M (19.6%)|Avg: 41.01 M
Dry braking in meters (100 - 0 km/h) (Lower is better)
Bridgestone Potenza Sport Ref
36.70 M
Michelin CrossClimate 2
38.20 M
Bridgestone Weather Control A005
40.00 M
Toyo Celsius AS2
40.90 M
Continental AllSeasonContact
42.30 M
Vredestein Quatrac Pro
43.00 M
Bridgestone Blizzak LM005
43.10 M
Goodyear Vector 4Seasons Gen 3
43.90 M
Dry Handling
Spread: 7.00 Km/H (5.5%)|Avg: 122.69 Km/H
Dry Handling Average Speed (Higher is better)
Bridgestone Potenza Sport Ref
127.30 Km/H
Michelin CrossClimate 2
122.90 Km/H
Bridgestone Weather Control A005
122.80 Km/H
Vredestein Quatrac Pro
122.70 Km/H
Toyo Celsius AS2
122.10 Km/H
Continental AllSeasonContact
121.80 Km/H
Goodyear Vector 4Seasons Gen 3
121.60 Km/H
Bridgestone Blizzak LM005
120.30 Km/H
Wet
Wet braking is quite a surprise. The tests were done at 8c, and it's important to remember the Potenza Sport UUHP summer tire is one of the UUHP tires that does need a bit of temperature to work, but in this test the summer tire could only manage mid pack in wet braking and near the bottom during wet handling! The rear star is the winter tire, beating all the all season tires are relatively warm winter conditions, apart from the Vredestein Quatrac Pro, which is always outstanding in the wet.
Wet Braking
Spread: 9.40 M (31.2%)|Avg: 34.03 M
Wet braking in meters (80 - 0 km/h) (Lower is better)
Vredestein Quatrac Pro
30.10 M
Bridgestone Blizzak LM005
32.70 M
Bridgestone Weather Control A005
32.90 M
Bridgestone Potenza Sport Ref
33.40 M
Goodyear Vector 4Seasons Gen 3
33.50 M
Continental AllSeasonContact
34.50 M
Michelin CrossClimate 2
35.60 M
Toyo Celsius AS2
39.50 M
Wet Handling
Spread: 6.90 Km/H (9.2%)|Avg: 71.96 Km/H
Wet Handling Average Speed (Higher is better)
Vredestein Quatrac Pro
75.40 Km/H
Bridgestone Blizzak LM005
73.70 Km/H
Goodyear Vector 4Seasons Gen 3
73.10 Km/H
Continental AllSeasonContact
72.10 Km/H
Bridgestone Weather Control A005
71.70 Km/H
Bridgestone Potenza Sport Ref
71.30 Km/H
Michelin CrossClimate 2
69.90 Km/H
Toyo Celsius AS2
68.50 Km/H
Straight Aqua
Spread: 6.90 Km/H (9.1%)|Avg: 71.95 Km/H
Float Speed in Km/H (Higher is better)
Toyo Celsius AS2
75.60 Km/H
Bridgestone Potenza Sport Ref
75.50 Km/H
Continental AllSeasonContact
72.40 Km/H
Bridgestone Blizzak LM005
71.50 Km/H
Michelin CrossClimate 2
71.40 Km/H
Goodyear Vector 4Seasons Gen 3
70.40 Km/H
Vredestein Quatrac Pro
70.10 Km/H
Bridgestone Weather Control A005
68.70 Km/H
Snow
Fortunately the winter tire was also the best in all the snow tests and the summer tire the worst.
As we've seen in other tests, the Michelin CrossClimate 2 is as close to a winter tire as any all season tire is.
Snow Braking
Spread: 30.70 M (117.6%)|Avg: 32.11 M
Snow braking in meters (50 - 0 km/h) (Lower is better)
Bridgestone Blizzak LM005
26.10 M
Michelin CrossClimate 2
26.30 M
Continental AllSeasonContact
28.80 M
Goodyear Vector 4Seasons Gen 3
28.90 M
Bridgestone Weather Control A005
29.00 M
Toyo Celsius AS2
30.10 M
Vredestein Quatrac Pro
30.90 M
Bridgestone Potenza Sport Ref
56.80 M
Snow Handling
Spread: 30.30 Km/H (63.3%)|Avg: 42.26 Km/H
Snow handling average speed (Higher is better)
Bridgestone Blizzak LM005
47.90 Km/H
Michelin CrossClimate 2
47.70 Km/H
Continental AllSeasonContact
46.20 Km/H
Toyo Celsius AS2
45.20 Km/H
Bridgestone Weather Control A005
45.10 Km/H
Goodyear Vector 4Seasons Gen 3
44.90 Km/H
Vredestein Quatrac Pro
43.50 Km/H
Bridgestone Potenza Sport Ref
17.60 Km/H
Snow Slalom
Spread: 2.26 m/sec2 (64.8%)|Avg: 2.97 m/sec2
Lateral acceleration (Higher is better)
Bridgestone Blizzak LM005
3.49 m/sec2
Michelin CrossClimate 2
3.41 m/sec2
Goodyear Vector 4Seasons Gen 3
3.20 m/sec2
Continental AllSeasonContact
3.19 m/sec2
Toyo Celsius AS2
3.10 m/sec2
Bridgestone Weather Control A005
3.08 m/sec2
Vredestein Quatrac Pro
3.06 m/sec2
Bridgestone Potenza Sport Ref
1.23 m/sec2
Environment
Noise is an interesting test, with the summer tire by far the nosiest and the winter tire once again only being beat by the Vredestein. Summer tires are usually closer to all season tires in noise, this Potenza Sport is particularly noisy.
Noise
Spread: 2.80 dB (3.9%)|Avg: 72.09 dB
External noise in dB (Lower is better)
Vredestein Quatrac Pro
71.10 dB
Bridgestone Blizzak LM005
71.20 dB
Toyo Celsius AS2
71.50 dB
Goodyear Vector 4Seasons Gen 3
71.70 dB
Bridgestone Weather Control A005
72.10 dB
Michelin CrossClimate 2
72.10 dB
Continental AllSeasonContact
73.10 dB
Bridgestone Potenza Sport Ref
73.90 dB
There was quite a spread in rolling resistance, with the AllSeasonContact proving to be the best of the group.
Rolling Resistance
Spread: 2.30 kg / t (30.7%)|Avg: 8.58 kg / t
Rolling resistance in kg t (Lower is better)
Continental AllSeasonContact
7.50 kg / t
Michelin CrossClimate 2
7.60 kg / t
Bridgestone Weather Control A005
8.30 kg / t
Bridgestone Blizzak LM005
8.60 kg / t
Toyo Celsius AS2
8.80 kg / t
Vredestein Quatrac Pro
9.00 kg / t
Goodyear Vector 4Seasons Gen 3
9.00 kg / t
Bridgestone Potenza Sport Ref
9.80 kg / t
Interestingly all the all season tires were priced between the summer and winter tires.
Very good on snow with a high level of grip and a comparatively wide limit range for an all-season. Very short braking distances dry. Good feedback and high grip in dry corners, good safety reserves.
Slightly longer braking distances in the wet and heavy understeer in wet turns, somewhat reduced aquaplaning safety. Weakly audible howling noise between 50 and 30 km/h (determined when the vehicle coasts from 80 km/h)
Moderate grip on snow, but excellent wet grip with very precise and reliable handling. Reliable performance even in the dry. Very quiet on the outside and inside, comfortable.
Slightly longer braking distances on snow, a bit nervous and sensitive to load changes when cornering. High rolling resistance.
Very good traction and easy to control driving behavior on snow, cooperates very well with the ASR/ESP/ABS control systems. Quite safe from aquaplaning, good level of grip and safe handling on dry roads, very low rolling resistance.
Sharp traction break, narrow slip zone on snow. Slightly longer braking distances on wet and dry roads.
Reference winter tires with better grip due to the system and wider slip and limit areas on snow. Easily manageable even in critical situations. Good wet grip, decent ride comfort.
Significant deficits when driving fast on winding, dry roads. Sluggish steering response, strong understeer. Very weakly perceptible rolling noise inside the vehicle, increased rolling resistance.
Decent grip and agile handling on snow, safer and wider limit area on wet. Very manageable on dry roads, but not very dynamic.
Low reserves for spinning wheels on snow. Not very stable when changing loads in the wet. Longer braking distances on dry asphalt, high rolling resistance.
Acceptable braking and cornering grip on snow. Good balanced performance on dry roads, superior aquaplaning safety.
Inharmonious with too small steering angle and slip reserves handling on snow. Deficits in cornering grip and too long braking distances on a wet road (devaluation). Increased rolling resistance. A bit rumbling, howling road noise at 70-50 km/h.