Tire specs
- Load index
- 107
- Speed rating
- Y (186 mph)
- Load range
- Extra load (XL)
- Tread depth
- 9/32"
- Item #
- 2754021CON03574300000
2026 Cadillac OPTIQ Sport — 275/40R21
2026 Cadillac OPTIQ Sport
- Factory size
- 275/40R21
- Load / speed
- 107H
13 tire results
Factory-size matches for your vehicleWhat size tires does the 2026 Cadillac OPTIQ Sport take?
The factory tire size for the 2026 Cadillac OPTIQ Sport is 275/40R21.
The catalog lists it at load index 107, speed rating H (up to 130 mph).
| Wheels | Size | Load index | Speed rating |
|---|---|---|---|
| All wheels | 275/40R21 | 107 | H |
Confirm the size printed on the sidewall of your current tire or on the tire placard in the driver's door jamb before you buy. Replacement tires should meet or exceed the vehicle's load index and speed rating.