2026 Cadillac CT5 Wheel & Tire Sizes
Complete fitment guide for the 2026 Cadillac CT5: factory tire sizes, compatible wheel diameters, widths and offsets, and the 5x120 bolt pattern — for every trim.
Bolt Pattern
5x120
Centre Bore
66.9 mm
TPMS
433 MHz
Factory (OEM) Tire Sizes for the 2026 Cadillac CT5
Front / square fitments
Click any size to shop tires in stock now — free shipping anywhere in Canada, optional installation at our 5 GTA locations.
2026 Cadillac CT5 Wheel Fitment by Trim
Compatible wheel diameter, width and offset ranges for each 2026 Cadillac CT5 configuration. Trims with different front and rear specs run a staggered setup.
2.0T
Staggered2L
| Spec | Front | Rear |
|---|---|---|
| Wheel diameter | 18–20" | 18–20" |
| Wheel width | 8.5–9" | 9.5–10.5" |
| Wheel offset | 25–38 mm | 25–40 mm |
| Tire width | 245–275 mm | 0 mm |
3.0T
3L
| Spec | Front & Rear |
|---|---|
| Wheel diameter | 18–20" |
| Wheel width | 8.5–10" |
| Wheel offset | 25–45 mm |
| Tire width | 245–275 mm |
2026 Cadillac CT5 Fitment FAQ
What is the bolt pattern on a 2026 Cadillac CT5?
The 2026 Cadillac CT5 uses a 5x120 bolt pattern (5 lug nuts on a 120 mm circle) with a 66.9 mm centre bore.
What size tires fit a 2026 Cadillac CT5?
Factory (OEM) tire sizes for the 2026 Cadillac CT5 include 245/45R18, 245/40R19, 245/40ZR19, 255/35R20. Always confirm against the placard inside the driver's door jamb.
What wheel sizes can I put on a 2026 Cadillac CT5?
Depending on trim, the 2026 Cadillac CT5 accepts wheels from 18" up to 20" in diameter with the correct width and offset — larger diameters typically require lower-profile tires to keep the overall rolling diameter stock.
Fitment data is provided as a guide. Always verify sizes against your vehicle's door-jamb placard or with our fitment experts before ordering.