Menu

Test Charts / Auto Bild Sportscars

2023 AutoBild Sports Car Summer Tire Test

Compare each discipline in the tested size. See the measured result, position and gap to the best tire, then read the verdict for the trade-offs behind the finishing order.

Tested size
225/40 R18
Tires tested
13
Disciplines
9

Read the measurements, not just the rank

Lower is better for braking distances and lap times; higher is better for subjective scores and aquaplaning speed. Bars start at zero. Read the gap alongside the position: adjacent tires can be separated by very different margins.

Positions and gaps always refer to the full test field within each group. Selecting tires does not recalculate rankings or change the best-in-test benchmark.

Dry

2

Dry Braking

Dry braking in feet (62 - 0 mph)

Lower is better ↓
Dry Braking
Position / TireResultGap to bestResidual speed
109 ft Best 0 mph
110 ft +1 ft 6 mph
113 ft +4 ft 14 mph
113 ft +4 ft 14 mph
113 ft +4 ft 15 mph
114 ft +5 ft 16 mph
114 ft +5 ft 16 mph
115 ft +6 ft 18 mph
115 ft +6 ft 18 mph
116 ft +7 ft 19 mph
116 ft +7 ft 20 mph
118 ft +9 ft 22 mph
127 ft +18 ft 30 mph

The difference between best and worst was 15.9% (18 ft ≈ 1.2 Car Lengths). From 80 mph, the Superia Ecoblue UHP would still be travelling at 30 mph when the Continental SportContact 7 had stopped.

Residual speed is calculated from the measured braking distances, assuming constant deceleration; it is not a separate measurement.

Dry Handling

Dry Handling Average Speed

Higher is better ↑
Dry Handling
Position / TireResultGap to best
71.8 mph Best
71.6 mph -0.2 mph
71.5 mph -0.3 mph
71.2 mph -0.6 mph
71.1 mph -0.7 mph
71.1 mph -0.7 mph
71.0 mph -0.8 mph
71.0 mph -0.8 mph
70.9 mph -0.9 mph
70.8 mph -1.0 mph
70.0 mph -1.8 mph
69.7 mph -2.1 mph
67.9 mph -3.9 mph

The difference between best and worst was 5.4% (3.9 mph).

Wet

5

Wet Braking

Wet braking in feet (62 - 0 mph)

Lower is better ↓
Wet Braking
Position / TireResultGap to bestResidual speed
127 ft Best 0 mph
128 ft +1 ft 4 mph
128 ft +1 ft 7 mph
134 ft +7 ft 18 mph
135 ft +8 ft 19 mph
135 ft +8 ft 20 mph
138 ft +11 ft 23 mph
139 ft +12 ft 23 mph
141 ft +14 ft 25 mph
142 ft +15 ft 26 mph
143 ft +16 ft 26 mph
143 ft +16 ft 27 mph
165 ft +38 ft 38 mph

The difference between best and worst was 29.4% (38 ft ≈ 2.5 Car Lengths). From 80 mph, the Superia Ecoblue UHP would still be travelling at 38 mph when the Continental SportContact 7 had stopped.

Residual speed is calculated from the measured braking distances, assuming constant deceleration; it is not a separate measurement.

Wet Handling

Wet Handling Average Speed

Higher is better ↑
Wet Handling
Position / TireResultGap to best
54.0 mph Best
53.6 mph -0.4 mph
52.9 mph -1.1 mph
52.8 mph -1.2 mph
52.7 mph -1.3 mph
52.6 mph -1.4 mph
52.6 mph -1.4 mph
52.1 mph -1.9 mph
51.6 mph -2.4 mph
51.5 mph -2.5 mph
50.7 mph -3.3 mph
48.9 mph -5.1 mph
45.4 mph -8.6 mph

The difference between best and worst was 16% (8.6 mph).

Wet Circle

Wet Circle Lap Time in seconds

Lower is better ↓
Wet Circle
Position / TireResultGap to best
11.04 s Best
11.05 s +0.01 s
11.07 s +0.03 s
11.08 s +0.04 s
11.09 s +0.05 s
11.09 s +0.05 s
11.13 s +0.09 s
11.19 s +0.15 s
11.24 s +0.20 s
11.25 s +0.21 s
11.4 s +0.36 s
11.55 s +0.51 s
11.66 s +0.62 s

The difference between best and worst was 5.6% (0.62 s).

Straight Aqua

Float Speed in mph

Higher is better ↑
Straight Aqua
Position / TireResultGap to best
48.8 mph Best
48.4 mph -0.4 mph
48.4 mph -0.4 mph
48.3 mph -0.5 mph
48.2 mph -0.6 mph
48.2 mph -0.6 mph
47.8 mph -1.0 mph
47.4 mph -1.4 mph
47.0 mph -1.8 mph
46.4 mph -2.4 mph
46.2 mph -2.6 mph
45.2 mph -3.6 mph
42.7 mph -6.1 mph

The difference between best and worst was 12.6% (6.1 mph).

Curved Aquaplaning

Remaining lateral acceleration

Higher is better ↑
Curved Aquaplaning
Position / TireResultGap to best
9.7 ft/s² Best
9.3 ft/s² -0.4 ft/s²
9.3 ft/s² -0.4 ft/s²
9.0 ft/s² -0.7 ft/s²
9.0 ft/s² -0.7 ft/s²
8.9 ft/s² -0.8 ft/s²
8.7 ft/s² -1.0 ft/s²
8.2 ft/s² -1.5 ft/s²
8.0 ft/s² -1.7 ft/s²
7.7 ft/s² -2.0 ft/s²
7.4 ft/s² -2.3 ft/s²
7.3 ft/s² -2.4 ft/s²
7.0 ft/s² -2.7 ft/s²

The difference between best and worst was 27.7% (2.7 ft/s²).

Comfort

1

Noise

External noise in dB

Lower is better ↓
Noise
Position / TireResultGap to best
66.5 dB Best
66.6 dB +0.10 dB
66.7 dB +0.20 dB
66.9 dB +0.40 dB
67 dB +0.50 dB
67.5 dB +1.00 dB
67.5 dB +1.00 dB
67.5 dB +1.00 dB
67.6 dB +1.10 dB
67.7 dB +1.20 dB
68.2 dB +1.70 dB
68.3 dB +1.80 dB
69 dB +2.50 dB

The difference between best and worst was 3.8% (2.5 dB).

Value

1

Rolling Resistance

Rolling resistance in kg t

Lower is better ↓
Rolling Resistance
Position / TireResultGap to bestExtra fuel / year
7.05 kg/t Best $0
8.38 kg/t +1.33 kg/t $55
8.41 kg/t +1.36 kg/t $57
8.5 kg/t +1.45 kg/t $60
8.55 kg/t +1.50 kg/t $63
8.62 kg/t +1.57 kg/t $65
8.68 kg/t +1.63 kg/t $68
8.8 kg/t +1.75 kg/t $73
9.04 kg/t +1.99 kg/t $83
9.15 kg/t +2.10 kg/t $88
9.22 kg/t +2.17 kg/t $90
9.83 kg/t +2.78 kg/t $116
9.9 kg/t +2.85 kg/t $119

The difference between best and worst was 40.4% (2.85 kg / t). Over 12,000 miles a year at $3.60/gal, the Bridgestone Potenza Sport uses about 33 gal ($119) more fuel than the Firestone Firehawk Sport.

Adjust the assumptions

Calculated estimates, not additional measurements. Use the controls to explore the assumptions. These calculators use the full test field, independently of your tire selection above.

12,000 mi
$3.60/gal
Estimates based on typical driving conditions. Rolling resistance accounts for approximately 20% of IC vehicle fuel consumption and 25% of EV energy consumption. Actual savings vary based on driving style, vehicle weight, road conditions, and tire age. For comparative purposes only. Lifetime savings based on a 40,000km / 25,000 mile tread life.

Test setup & methodology

The test setting, the conditions recorded and how the results contribute to the score.

Recorded test conditions

Recorded test conditions

Dry Braking
62.1 → 0.0 mph
Wet Braking
62.1 → 0.0 mph

More tire tests

Cross-check this test

All tire tests

Where these tires were tested again, and how the verdict held up.

Rate your tires

My tires

Saved in this browser on this site. No account needed. Clearing browser data removes your choices.

Vehicle and size

Check the size, load and speed ratings on your vehicle. Saving a size does not confirm fitment.

Saved tires

Save tires from a tire page, test or comparison to keep them here.

Select 2–8 saved tires. Ranked comparisons require at least two shared tests.