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. 225/55 R17 is 40mm wider than the narrowest dimension (185) and 0mm narrower than the widest one (225). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (225mm), which results in 123.75mm sidewall height. In 225/55 R17, there is only one possible speed index for Toyo Observe S944 - "V", which is good for speeds up to 240 km/h. In 225/55 R17, Observe S944 usually competes against EuroWinter HS01, which is a tyre from Falken with a rating of 53%, compared to 57% of the Toyo in question. Latest test in 225/55 R17 was held by Autobild in 2020, where Observe S944 received rating "Good" and finished on the 6. place. It was tested on a BMW X1.
Autobild Winter tyre test 2023 225/45 R18 satisfactory Ranked #15 of 20The Toyo Observe S944 finished in the middle of the pack, securing the 15th spot among 20 competitors. Awarded a final rating of 'Satisfactory', this tire demonstrated strong performance on snow, with high traction and short braking distances. Additionally, it was praised for decent comfort and good tread life. However, its performance was hindered by moderate lateral grip on snowy and wet surfaces, which affected its overall standing. Despite these drawbacks, the Toyo Observe S944 showed commendable strengths where it mattered the most in winter conditions.
