Tire Size Specification
Verified OEM & Service Reference2026 Cadillac Optiq Electric Motor (210 and 255 kW ACPM) — Tire Size
Recommended interval: Rotate every 5,000–7,500 miles; check cold PSI monthly
Engine / Trim Variant
Factory Tire Size
245/50R20 / 275/45R21
Quick Purchase
Check verified fitment on Amazon
Technical Specifications
| Front Tire Size | 245/50R20 / 275/45R21 |
|---|---|
| Rear Tire Size | 245/50R20 / 275/45R21 |
| Rim / Wheel Size | 20" |
| Matched Trims | Luxury, Premium Luxury, Premium Sport |
Compatible Aftermarket Options
Direct OEM cross-references- Buy Michelin / Continental / Pirelli 245/50R20 on AmazonMichelin / Continental / Pirelli245/50R20
Search query: 245/50R20 tire
Tire Size Fitment by Engine / Trim (2026 Cadillac Optiq)
| Engine / Trim | Oil Spec & Capacity | OEM Oil Filter |
|---|---|---|
| Electric Motor (210 and 255 kW ACPM) | N/A (Electric Vehicle) • 0 qt (0L) | N/A (Electric Drive Unit) |
| Electric Motor (140, 155, 205 and 220 kW ACPM) | N/A (Electric Vehicle) • 0 qt (0L) | N/A (Electric Drive Unit) |
DIY Fitment & Verification Checklist for 2026 Cadillac Optiq
- Confirm your engine code or trim variant above before ordering parts, as mid-year production changes can affect tire size fitment.
- When purchasing OEM or aftermarket brands (Motorcraft, ACDelco, Mopar, Wix, Fram, Mobil 1, Bosch, NGK), cross-check the Amazon Garage Confirmed Fit badge with your 17-digit VIN.
- Always consult your 2026 Cadillac Optiq owner's manual for exact torque specs and fluid service intervals.
Sources: NHTSA vPIC & OEM Service SpecificationsReport an inaccurate spec or part number
Frequently Asked Questions
What is the OEM tire size specification for a 2026 Cadillac Optiq?
The primary OEM tire size part number / specification for the 2026 Cadillac Optiq Electric Motor (210 and 255 kW ACPM) is 245/50R20 / 275/45R21.
Which aftermarket tire size brands fit the 2026 Cadillac Optiq?
Compatible aftermarket options include Michelin / Continental / Pirelli 245/50R20.