Cadillac tire sizes

We cover 11 Cadillac models across 16 factory fitments, spanning model years 1965 to 2024. The size that turns up most often on a Cadillac is 235/75R15, followed by 235/40R18 and 245/40R19. Wheel diameters run from 15 to 24 inches, so the trim and wheel package matter as much as the model year.

Cadillac does not stamp an approval code on tires the way Porsche and BMW do, so any tire in the right size that meets the load index and speed rating on the door placard is a legitimate replacement. Pick on wet braking, tread life and price instead.

Pick your model below to see the size for every year and trim, what it costs from budget to premium, and which tires are worth buying in that size. If you already know your size, search by size instead, and if you are not sure where to find it, our guide on reading a tire size shows exactly where the placard sits.

Cadillac is General Motors' luxury brand, selling around 190,000 vehicles a year in the United States. The Escalade is the halo product and much of the profit, the XT4, XT5 and XT6 crossovers carry the volume, and the CT4 and CT5 sedans continue with the V and Blackwing performance versions. The electric Lyriq is the brand's stated future.

Cadillac's reputation has moved from soft-riding sedans to large SUVs and genuinely fast sedans, and the tire sizes follow that shift exactly.

Tires on a Cadillac

As a GM brand, Cadillac's original tires carry a TPC SPEC number molded into the sidewall, the General Motors original equipment marking listed in Wikipedia's tire code reference. It identifies the GM specification the car was developed on rather than acting as a brand approval like BMW's star, and replacement tires normally do not carry it. Modern Cadillacs sit on big wheels with short sidewalls: a current Escalade runs 275/50R22, the 2015 to 2020 generation ran 285/45R22, and the electric Lyriq runs 265/50R20 or 275/40R22.

The sedans are on 18 to 20 inch wheels, the CT4 on 235/40R18 and the CT5 on 245/40R19, with the V and Blackwing versions staggered and on summer-only tires from the factory. The Lyriq weighs roughly 5,600 pounds, around a thousand more than a CT5, and that mass combined with instant torque wears rear tires fast enough that owners often see half the mileage they expected. Escalade owners split between staying on the OE 22 inch all-season and moving to a smaller wheel for ride comfort, and a large aftermarket runs 24 inch wheels with 295/35R24 or 305/35R24, which our data covers because so many cars are on them.

The models that matter

The Escalade dominates, on 285/45R22 for 2015 to 2020 and 275/50R22 from 2021. The XT5 runs 235/65R18 and the XT6 255/45R20. The CT5 takes 245/40R19, the CT4 235/40R18, and the older CTS 245/45R17.

The Lyriq uses 265/50R20 or 275/40R22.

What owners find out later

A 22 inch Escalade tire has about four inches of sidewall under a vehicle that can weigh close to 6,000 pounds loaded, and pothole damage to both tire and wheel is the most common Escalade tire claim. The 24 inch aftermarket sizes many Escalades run are not GM fitments, so the door placard pressures no longer apply and the correct pressure has to be read off a load table for the new size. Cadillac's magnetic ride suspension is tuned around the original tire's stiffness, so a much stiffer replacement can make the car ride worse than a cheaper, softer one.

Several Cadillacs have no spare at all, and the Blackwing sedans ship on summer tires that should not be driven below about 40 degrees Fahrenheit.