The Toyo Observe S944 22545R17 94V brings a 225 mm width and 45% sidewall to 17-inch wheel setups, positioning it as a winter choice for passenger cars.
Its load index of 94 means it can handle up to 670 kg (1477 lbs) per tire, while the V speed rating allows for speeds up to 240 km/h (149 mph) — specs typical of the C1, entry-level segment.
No rim protection is built in here, meaning the wheel edge isn’t specifically shielded from curb contact. It does not offer run-flat capability, meaning a puncture will require a stop rather than continued driving. It’s built with reinforced construction, which raises its load index above a comparable standard tire — worth checking your registration if load rating matters for your vehicle.
It performs on muddy and snow-covered roads and carries winter-suitability testing.
The EU label breaks down to class D for fuel efficiency, class B for wet grip, and class B for noise at 71 dB — a moderate noise footprint, not particularly loud or quiet.
As useful as the EU label is, it doesn’t cover every factor — things like dry-weather grip, aquaplaning resistance, and tread wear fall outside the official scoring.
You can view the manufacturer’s full specification sheet here. Looking for more options in this size? Browse our full 225/45R17 tire size guide.
This review is based on manufacturer specifications, technical data, and aggregated driver feedback. Last updated: September 6, 2026