The 2023 Cadillac CT5 tire size depends on trim: the V, 4WD takes 245/40ZR19 94Y; the Sport, RWD takes 245/40R19 94V; the Luxury, RWD takes 245/45R18 96V; the V Blackwing, Standard Trans takes 275/35ZR19 (100Y) XL; the Premium Luxury, 3.0L Eng VIN W, RWD takes 245/45R18 96V; the Sport, 4WD takes 245/40R19 94V; the Premium Luxury, 2.0L Eng VIN K, 4WD takes 245/45R18 96V; the Luxury, 4WD takes 245/45R18 96V; the V, RWD takes 245/40ZR19 94Y; the V Blackwing, Automatic Trans takes 275/35ZR19 (100Y) XL; the Premium Luxury, 2.0L Eng VIN K, RWD takes 245/45R18 96V; the Premium Luxury, 3.0L Eng VIN W, 4WD takes 245/45R18 96V, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
V, 4WD: 245/40ZR19 94Y
Sport, RWD: 245/40R19 94V
Luxury, RWD: 245/45R18 96V
V Blackwing, Standard Trans: 275/35ZR19 (100Y) XL
Premium Luxury, 3.0L Eng VIN W, RWD: 245/45R18 96V
Sport, 4WD: 245/40R19 94V
Premium Luxury, 2.0L Eng VIN K, 4WD: 245/45R18 96V
Luxury, 4WD: 245/45R18 96V
V, RWD: 245/40ZR19 94Y
V Blackwing, Automatic Trans: 275/35ZR19 (100Y) XL
Premium Luxury, 2.0L Eng VIN K, RWD: 245/45R18 96V
Premium Luxury, 3.0L Eng VIN W, 4WD: 245/45R18 96V
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