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Observe EWS1

Designed for European winter conditions, Observe EWS1 offers drivers precision and control at highway speeds.
Advances in compound and construction have led to improved braking in both wet and snow conditions, maintaining safe, comfortable driving as conditions change throughout the winter months.

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Features and benefits

Sharp Angle Edges
  • Improved snow traction
Multi groove pattern
  • Improved snow braking
  • Improved aquaplaning resistance
Shallow groove sipes
  • Wet andd snow performance
  • Dry/wet braking & snow traction
NEW Wave sipes
  • Dry & wet braking
Directional Tread pattern
  • Improved Wet & Dry Braking
  • Snow traction
High Grip Compound
  • Enhanced wet Grip
  • Snow grip
New Profile Design (smoother deformation)
  • Wet & Dry handling
  • Low rolling resistance

The above label shows the complete range of values for this product. For specific values by size, please see the individual listings in the specifications below.

Specifications

EU label column links to the European Product Database for Energy Labelling for the product specification listed.

Rim Diameter
20
Load Speed Index
103V
Overall Diameter (mm)
728
Overall Width (mm)
243
Approved Rim Width Range (inch)
7.5-8-9.0
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
20
Load Speed Index
101W
Overall Diameter (mm)
712
Overall Width (mm)
260
Approved Rim Width Range (inch)
8.5-9-10.0
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
73 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
20
Load Speed Index
105V
Overall Diameter (mm)
738
Overall Width (mm)
255
Approved Rim Width Range (inch)
8.0-8.5-9.5
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
20
Load Speed Index
110V
Overall Diameter (mm)
Overall Width (mm)
Approved Rim Width Range (inch)
-
EU label
Rolling Resistance
-
Wet Grip
-
Noise
-
Noise dB
-
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Tire Size Rim Diameter Load Speed Index Overall Diameter (mm) Overall Width (mm) Approved Rim Width Range (inch) EU Label Rim Protector 3PMS Ice Grip POR
245/45 R20 20 103V 728 243 7.5-8-9.0 C B B 72 dB Yes
255/40 R20 20 101W 712 260 8.5-9-10.0 C B B 73 dB Yes
255/45 R20 20 105V 738 255 8.0-8.5-9.5 C B B 72 dB Yes
275/45 R20 20 110V - - - - - Yes
Rim Diameter
19
Load Speed Index
91W
Overall Diameter (mm)
647
Overall Width (mm)
241
Approved Rim Width Range (inch)
8.0-8.5-9.5
EU label
Rolling Resistance
D
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
19
Load Speed Index
96W
Overall Diameter (mm)
671
Overall Width (mm)
241
Approved Rim Width Range (inch)
8.0-8.5-9.5
EU label
Rolling Resistance
D
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
19
Load Speed Index
99V
Overall Diameter (mm)
695
Overall Width (mm)
238
Approved Rim Width Range (inch)
7.5-8-9.0
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
19
Load Speed Index
103V
Overall Diameter (mm)
719
Overall Width (mm)
245
Approved Rim Width Range (inch)
6.5-7.5-8.5
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
19
Load Speed Index
102V
Overall Diameter (mm)
703
Overall Width (mm)
243
Approved Rim Width Range (inch)
7.5-8-9.0
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
19
Load Speed Index
104V
Overall Diameter (mm)
Overall Width (mm)
Approved Rim Width Range (inch)
-
EU label
Rolling Resistance
-
Wet Grip
-
Noise
-
Noise dB
-
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Tire Size Rim Diameter Load Speed Index Overall Diameter (mm) Overall Width (mm) Approved Rim Width Range (inch) EU Label Rim Protector 3PMS Ice Grip POR
235/35 R19 19 91W 647 241 8.0-8.5-9.5 D B B 72 dB Yes
235/40 R19 19 96W 671 241 8.0-8.5-9.5 D B B 72 dB Yes
235/45 R19 19 99V 695 238 7.5-8-9.0 C B B 72 dB Yes
235/50 R19 19 103V 719 245 6.5-7.5-8.5 C B B 72 dB Yes
245/45 R19 19 102V 703 243 7.5-8-9.0 C B B 72 dB Yes
255/45 R19 19 104V - - - - - Yes
Rim Diameter
18
Load Speed Index
92W
Overall Diameter (mm)
637
Overall Width (mm)
230
Approved Rim Width Range (inch)
7.5-8-9.0
EU label
Rolling Resistance
D
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
18
Load Speed Index
95V
Overall Diameter (mm)
659
Overall Width (mm)
225
Approved Rim Width Range (inch)
7.0-7.5-8.5
EU label
Rolling Resistance
D
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
18
Load Speed Index
98V
Overall Diameter (mm)
669
Overall Width (mm)
236
Approved Rim Width Range (inch)
7.5-8-9.0
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
18
Load Speed Index
104H
Overall Diameter (mm)
715
Overall Width (mm)
245
Approved Rim Width Range (inch)
6.5-7.5-8.5
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
3PMS
Yes
Ice Grip
POR
Rim Diameter
18
Load Speed Index
100V
Overall Diameter (mm)
677
Overall Width (mm)
243
Approved Rim Width Range (inch)
7.5-8-9.0
EU label
Rolling Resistance
C
Wet Grip
B
Noise
C
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Tire Size Rim Diameter Load Speed Index Overall Diameter (mm) Overall Width (mm) Approved Rim Width Range (inch) EU Label Rim Protector 3PMS Ice Grip POR
225/40 R18 18 92W 637 230 7.5-8-9.0 D B B 72 dB Yes
225/45 R18 18 95V 659 225 7.0-7.5-8.5 D B B 72 dB Yes
235/45 R18 18 98V 669 236 7.5-8-9.0 C B B 72 dB Yes
235/55 R18 18 104H 715 245 6.5-7.5-8.5 C B B 72 dB
245/45 R18 18 100V 677 243 7.5-8-9.0 C B C 72 dB Yes
Rim Diameter
17
Load Speed Index
98V
Overall Diameter (mm)
668
Overall Width (mm)
226
Approved Rim Width Range (inch)
6.0-7-7.5
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
3PMS
Yes
Ice Grip
POR
Rim Diameter
17
Load Speed Index
94V
Overall Diameter (mm)
634
Overall Width (mm)
225
Approved Rim Width Range (inch)
7.0-7.5-8.5
EU label
Rolling Resistance
D
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
17
Load Speed Index
98V
Overall Diameter (mm)
658
Overall Width (mm)
233
Approved Rim Width Range (inch)
6.0-7-8.0
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
17
Load Speed Index
97V
Overall Diameter (mm)
644
Overall Width (mm)
236
Approved Rim Width Range (inch)
7.5-8-9.0
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
Yes
3PMS
Yes
Ice Grip
POR
Rim Diameter
17
Load Speed Index
103V
Overall Diameter (mm)
690
Overall Width (mm)
245
Approved Rim Width Range (inch)
6.5-7.5-8.5
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
3PMS
Yes
Ice Grip
POR
Tire Size Rim Diameter Load Speed Index Overall Diameter (mm) Overall Width (mm) Approved Rim Width Range (inch) EU Label Rim Protector 3PMS Ice Grip POR
215/55 R17 17 98V 668 226 6.0-7-7.5 C B B 72 dB
225/45 R17 17 94V 634 225 7.0-7.5-8.5 D B B 72 dB Yes
225/50 R17 17 98V 658 233 6.0-7-8.0 C B B 72 dB Yes
235/45 R17 17 97V 644 236 7.5-8-9.0 C B B 72 dB Yes
235/55 R17 17 103V 690 245 6.5-7.5-8.5 C B B 72 dB
Rim Diameter
16
Load Speed Index
91H
Overall Diameter (mm)
632
Overall Width (mm)
214
Approved Rim Width Range (inch)
5.5-6.5-7.5
EU label
Rolling Resistance
C
Wet Grip
B
Noise
B
Noise dB
72 dB
Rim Protector
3PMS
Yes
Ice Grip
POR
Tire Size Rim Diameter Load Speed Index Overall Diameter (mm) Overall Width (mm) Approved Rim Width Range (inch) EU Label Rim Protector 3PMS Ice Grip POR
205/55 R16 16 91H 632 214 5.5-6.5-7.5 C B B 72 dB

I have been participating in the Dakar, one of the most challenging Cross-Country Rallies in the world with Open Country M/T-R since 2021.
Open Country has impressive performance in off-road terrain with a variety of specs to meet every need. With Open Country, I am confident even when attacking unknown places.
I also sympathize with the way Toyo Tires continues to be a challenger, always aims for better and higher performance for the future.

— Akira Miura: Driver, Team Land Cruiser Toyota Auto Body

Toyo Tires not only have the best tires but the best team and support on and off track. Always striving to improve on perfection and with this allowed us to win the Formula Drift Japan Championship with the Proxes R888R Drift.
I use Open Country M/T on my everyday Mazda BT50 that is kitted out for lots of fun plus used to haul the race cars from track to track.

Pikes Peak was an incredible experience for me and my team TCP-Magic, and we were also able to break 2 world records with Fastest Mazda and Fastest Rotary Powered Vehicle in the 101yrs history of Pikes Peak. TOYO TIRES constructed us 2 amazing tire options for the challenging conditions the mountain threw at us with the wild weather. I still can't believe the amount of traction we had and how the tire lasted the massive climb to the top with 156 corners up to 14,000 feet in elevation not to mention fitted on our crazy 2023 Mazda 3 with a 1400h 4 rotor Twin Turbo and RWD conversion running NO traction control, ABS or any type of assists.

— Mike Whiddett: Toyo Tires Global Brand Ambassador

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