Cadillac OPTIQ Spare Tire

Cadillac OPTIQ models manufactured in 2025 have tires with overall diameter ranging from 29.6" to 29.7", allowing the use of a temporary spare tire with a near same diameter as the OEM tire. Tire diameter and wheel diameter clearance have been taken into account for the specific Cadillac OPTIQ years and trims.

Listed below are compact spare tire sizes that can fit some Cadillac OPTIQ vehicles based on acceptable tire diameter range of 28.7" to 30.6". Some OPTIQ models may require the use of a traditional full-size tire as a spare. To ensure safe temporary mobility in case of a road emergency, always refer to the vehicle owner's manual for the correct Cadillac OPTIQ spare tire size designated by vehicle's manufacturer.

Spare Size	Spare Diameter
T175/90D18from $290.30	30.4"
T175/80R19from $182.97	30"
T155/80R19from $173.33	28.8"
T155/90D18from $163.99	29"
T155/90R18from $134.96	29"
T165/90D18from $115.96	29.7"
T175/90R17	29.4"
T175/90D17	29.4"
T175/80R18	29"
T175/80D18	29"
T165/90R18	29.7"
T155/80D19	28.8"
T145/80R20	29.1"
T175/90R18	30.4"

Spare Tire for Cadillac OPTIQ

Discover spare tire solutions for your Cadillac OPTIQ based on model year. Generally, spare tire size has to be within 3% of the overall diameter of the original equipment tire size. Cadillac OPTIQ tire size can vary depending on the year and trim. Make sure to check the load index and load capacity of the spare tire to ensure that it is capable to safely support your vehicle's weight.

All listed guides, data and/or calculations are for informational purposes only. Spare-Tires.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information. Always refer to vehicle owner's manual for the correct spare tire size configuration.