Toyo Observe S944 is a winter tyre made in total of 53 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 205/55 R17 is 20mm wider than the narrowest dimension (185) and 20mm narrower than the widest one (225). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (205mm), which results in 112.75mm sidewall height. In 205/55 R17, there is only one possible speed index for Toyo Observe S944 - "V", which is good for speeds up to 240 km/h. In 205/55 R17, Observe S944 usually competes against MP93 Nordicca, which is a tyre from Matador with a rating of 40%, compared to 51% of the Toyo in question.
Relevant tyre tests in same or similiar dimension (205/55 R17)

| Name | Stopping distance on wet | ||||||
|---|---|---|---|---|---|---|---|
| Best values in test | 32,1 | ||||||
| Toyo Observe S944 | 38,2 | ||||||
| Show test details | |||||||

| Name | Wet | Dry | Snow | Ice | Noise | Wear | Fuel consumption |
|---|---|---|---|---|---|---|---|
| Best values in test | 1,3 | 2,0 | 1,8 | 2,1 | 2,5 | 1,0 | 1,8 |
| Toyo Observe S944 | 2,5 | 2,3 | 2,3 | 2,1 | 2,5 | 2,5 | 1,9 |
| Show test details | |||||||