The Cadillac CT5 is GM flagship rear-wheel-drive luxury sedan, positioned to compete with the BMW 5 Series and Mercedes E-Class. Tire choice on the CT5 follows the same split as those competitors: comfort-first touring for the base and Luxury trims, and max-grip summer or sport all-season rubber for the Sport and V-series variants.
CT5 tire sizes by trim
The CT5 base, Luxury, and Premium Luxury trims use 235/45R18 on 18-inch wheels. The CT5 Sport uses 235/40R19 on 19-inch wheels. The CT5-V uses staggered fitments with wider rear tires — verify your exact size on the driver door sticker, as V-series sizes differ between model years and whether the car is RWD or AWD.
All trims can be configured with RWD; AWD is available on non-V trims. RWD CT5 models handle rear tire wear differently than AWD — rear tires shoulder acceleration forces and wear faster, especially if you drive spiritedly.
Best all-season tires for the CT5 base, Luxury, and Premium Luxury
Michelin Pilot Sport All Season 4 — the top pick for CT5 owners on 18 or 19-inch wheels who want both sport feel and all-weather capability. Available in 235/45R18 and 235/40R19. Excellent wet braking, low road noise, and treadwear ratings around 500.
Continental PureContact LS — the quietest all-season in CT5 sizes. Best for buyers who want a quiet, composed Cadillac ride experience rather than a sport bias. Very smooth on highway surfaces with strong wet weather scores.
Bridgestone Turanza Quiettrack — strong quiet touring alternative. Excellent for highway-heavy commuters in 235/45R18. Noise suppression is the standout quality.
Goodyear Eagle F1 Asymmetric 6 — a sport-touring option that sits between the Michelin PSAS4 and a pure touring tire in character. Better dry cornering than the PureContact at a competitive price.
Best summer tires for the CT5 Sport and CT5-V
Michelin Pilot Sport 4S — the benchmark summer tire for the CT5 Sport and CT5-V. Exceptional dry grip, strong wet traction for a max-performance compound, and available in 235/40R19 and common V-series sizes. The right choice for Sport and V owners who want the chassis limits the CT5 is capable of.
Continental SportContact 7 — Continental flagship summer tire, competing directly with the PS4S. Available in 235/40R19. Independent tests show comparable performance — choose based on availability and price.
Pirelli P Zero — Pirelli flag summer tire for the CT5 in performance trims. Very strong dry grip. Available in many CT5-V fitments. A competitive alternative to the Michelin for V-series owners.
Frequently asked
What tire size does the Cadillac CT5 use?
CT5 Base, Luxury, Premium Luxury (18-inch): 235/45R18. CT5 Sport (19-inch): 235/40R19. CT5-V and CT5-V Blackwing use staggered fitments — verify your exact front and rear sizes on the driver door sticker.
How much do Cadillac CT5 tires cost?
235/45R18: $130 to $185 per tire. 235/40R19: $150 to $210 per tire. A full set of four in 235/45R18 installed runs $520 to $740. CT5-V staggered sets run higher depending on size.
Does the CT5 need special tires for RWD?
No special type is required, but RWD CT5 owners should expect rear tires to wear faster than fronts. Replace rears as a pair and keep tread depths matched across each axle. Avoid tire rotation myths — staggered setups cannot rotate front to rear.
Keep reading
Last updated 2026-06-27. General guidance only — confirm specifics with a local shop for your exact vehicle.