The 2014 Cadillac ATS tire size depends on trim: the Base, 2.0L Eng VIN X, AWD takes P225/45R17 90H; the Base, 2.0L Eng VIN X, RWD, Automatic Trans takes P225/45R17 90H; the Base, 2.0L Eng VIN X, RWD, Standard Trans takes P225/45R17 90H; the Base, 2.5L Eng VIN A takes P225/45R17 90H; the Luxury, 2.0L Eng VIN X, AWD takes P225/45R17 90H; the Luxury, 2.0L Eng VIN X, RWD, Automatic Trans takes P225/45R17 90H; the Premium, 3.6L Eng VIN 3, RWD takes 225/40RF18 88W; the Performance, 2.0L Eng VIN X, RWD, Automatic Trans takes P225/45R17 90H; the Premium, 2.0L Eng VIN X, Automatic Trans takes 225/40RF18 88W; the Luxury, 3.6L Eng VIN 3, RWD takes P225/45R17 90H; the Luxury, 2.5L Eng VIN A takes P225/45R17 90H; the Luxury, 2.0L Eng VIN X, RWD, Standard Trans takes P225/45R17 90H; the Premium, 3.6L Eng VIN 3, AWD takes 225/40R18 92V XL; the Performance, 3.6L Eng VIN 3, AWD takes P225/45R17 90H; the Performance, 2.0L Eng VIN X, AWD takes P225/45R17 90H; the Premium, 2.0L Eng VIN X, Standard Trans takes 225/40RF18 88W; the Luxury, 3.6L Eng VIN 3, AWD takes P225/45R17 90H; the Performance, 3.6L Eng VIN 3, RWD takes P225/45R17 90H; the Performance, 2.0L Eng VIN X, RWD, Standard Trans takes P225/45R17 90H, per the factory service manual.
Factory-Spec Tire Size
Varies by trim
Base, 2.0L Eng VIN X, AWD: P225/45R17 90H
Base, 2.0L Eng VIN X, RWD, Automatic Trans: P225/45R17 90H
Base, 2.0L Eng VIN X, RWD, Standard Trans: P225/45R17 90H
Base, 2.5L Eng VIN A: P225/45R17 90H
Luxury, 2.0L Eng VIN X, AWD: P225/45R17 90H
Luxury, 2.0L Eng VIN X, RWD, Automatic Trans: P225/45R17 90H
Premium, 3.6L Eng VIN 3, RWD: 225/40RF18 88W
Performance, 2.0L Eng VIN X, RWD, Automatic Trans: P225/45R17 90H
Premium, 2.0L Eng VIN X, Automatic Trans: 225/40RF18 88W
Luxury, 3.6L Eng VIN 3, RWD: P225/45R17 90H
Luxury, 2.5L Eng VIN A: P225/45R17 90H
Luxury, 2.0L Eng VIN X, RWD, Standard Trans: P225/45R17 90H
Premium, 3.6L Eng VIN 3, AWD: 225/40R18 92V XL
Performance, 3.6L Eng VIN 3, AWD: P225/45R17 90H
Performance, 2.0L Eng VIN X, AWD: P225/45R17 90H
Premium, 2.0L Eng VIN X, Standard Trans: 225/40RF18 88W
Luxury, 3.6L Eng VIN 3, AWD: P225/45R17 90H
Performance, 3.6L Eng VIN 3, RWD: P225/45R17 90H
Performance, 2.0L Eng VIN X, RWD, Standard Trans: P225/45R17 90H
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