Fitment guide

Cadillac CT4-V Blackwing Wheel & Tire Fitment Guide

Originally published | 07/12/2023
Updated | 03/08/2024

Looking to extract more performance out of your 2022+ Cadillac CT4-V Blackwing? You'll find exactly what you need to do here in our CT4-V Blackwing Wheel & Tire Fitment Guide. Whether you're looking to freshen up the appearance of your street car, or lower your lap times on track, our guide provides both wheel size and tire size recommendations, along with suspension setups, for your scenario. Check out options available in our Flow Formed wheels like the EC-7 and SM-10, or take a look at our Forged wheels such as the VS-5RS, SM-10RS, or EC-7RS.

Available Wheel Designs

Bolt Pattern

5x120mm

Center Bore

67.1mm

Lug Seat

60° Conical

Thread Pitch

M14x1.5mm

OEM+ Wheel Fitment

Easy upgrades for street-driven cars

  • White Cadillac CT4-V Blackwing - VS-5RS in Anthracite
  • Orange Cadillac CT4-V Blackwing - VS-5RS in Anthracite
  • Orange Cadillac CT4-V Blackwing - EC-7 in Anthracite
  • Grey Cadillac CT4-V Blackwing - EC-7 in Anthracite
  • Blue Cadillac CT4-V Blackwing - EC-7 in Anthracite
  • Blue Cadillac CT4-V Blackwing - EC-7 in Anthracite

These bolt-on wheel fitments are ideal for enthusiasts enjoying their CT4-V Blackwing day-to-day on the street, and they are typically paired with all-season or performance oriented summer tires. These wheel and tire configurations will improve the appearance and performance of the car without requiring modifications to the factory suspension or alignment. Just bolt-on and enjoy!

Wheels

Front Wheel Size: 18x9" ET31 Rear Wheel Size: 18x9.5” ET43

  • Available in: EC-7
  • Centering Rings Required
  • 3mm front spacer suggested for inner clearance

Tires

  • APEX Staff Pick Front Tire Size: 255/35-18 Rear Tire Size: 275/35-18
    • Stock Tire Sizes
    • Performance All-Season: Michelin Pilot Sport AS4 (540 TW), Continental DWS 06+ (560 TW), Falken FK460 A/S (500 TW)
    • Max Performance Summer: Michelin Pilot Sport 4S (300TW), Continental Extreme Sport 02 (340 TW), Falken FK510 (300 TW)
    • Extreme Performance Summer: Hankook RS-4 (200 TW), Falken RT660 (200 TW), Bridgestone RE71RS (200 TW)

Wheels 

Front Wheel Size: 18x9" ET30 Rear Wheel Size: 18x9.5” ET35

  • Available in: SM-10, VS-5RS, SM-10RS, EC-7RS
  • Centering Rings Required
  • 3mm front spacer suggested for inner clearance

Tires

  • APEX Staff Pick Front Tire Size: 255/35-18 Rear Tire Size: 275/35-18
    • Stock Tire Size
    • Performance All-Season: Michelin Pilot Sport AS4 (540 TW), Continental DWS 06+ (560 TW), Falken FK460 A/S (500 TW)
    • Max Performance Summer: Michelin Pilot Sport 4S (300TW), Continental Extreme Sport 02 (340 TW), Falken FK510 (300 TW)
    • Extreme Performance Summer: Hankook RS-4 (200 TW), Falken RT660 (200 TW), Bridgestone RE71RS (200 TW)

Wheels

Front Wheel Size: 18x9" ET30 Rear Wheel Size: 18x10” ET42

  • Available in: VS-5RS
  • Center ring required for front wheel

Tires

  • APEX Staff Pick Front Tire Size: 255/35-18 Rear Tire Size: 275/35-18
    • Stock tire sizes
    • Performance All-Season: Michelin Pilot Sport AS4 (540 TW), Continental DWS 06+ (560 TW), Falken FK460 A/S (500 TW)
    • Max Performance Summer: Michelin Pilot Sport 4S (300TW), Continental Extreme Sport 02 (340 TW), Falken FK510 (300 TW)
    • Extreme Performance Summer: Hankook RS-4 (200 TW), Falken RT660 (200 TW), Bridgestone RE71RS (200 TW)
  • Wider Alternative Front Tire Size: 255/35-18 Rear Tire Size: 285/35-18
    • Performance All-Season: Continental DWS 06+ (560 TW), Michelin Pilot Sport AS4 (540 TW),
    • Max Performance Summer: Bridgestone Potenza Sport (300TW), Continental Extreme Sport 02 (340 TW), Falken FK510 (300 TW)
    • Extreme Performance Summer: Hankook RS-4 (200 TW)

Performance Street and Track Wheel Fitment

Wider fitments for enhanced performance

  • White Cadillac CT4-V Blackwing - VS-5RS in Anthracite
  • White Cadillac CT4-V Blackwing - VS-5RS in Brushed Clear
  • Orange Cadillac CT4-V Blackwing - VS-5RS in Brushed Clear
  • Orange Cadillac CT4-V Blackwing - EC-7 in Race Silver
  • Orange Cadillac CT4-V Blackwing - FL-5 in Satin Black
  • Orange Cadillac CT4-V Blackwing - VS-5RS in Anthracite

Whether you enjoy spirited street driving or you're a weekend track warrior chasing lap times, these wheel & tire configurations are ideal for CT4-V Blackwing owners looking for a more dramatic improvement in performance. They are typically paired with performance oriented summer tires or track oriented R-compounds and this category includes both staggered and square configurations to best suit each individual drivers priorities, goals and preferences for their vehicle.

We've optimized the offset of our wheels to work well with the stock fenders, however, a wide variety of tire compounds can be used and some may require negative camber to fit properly. See fitment notes under each tire configuration below to see if modifications are required. If you plan to track your Blackwing, we highly recommend dialing in negative camber regardless of whether your wheel/tire fitment requires it for fender clearance. Negative camber is vital for extracting the most performance and longevity out of your tires, and without the proper amount the outer shoulders of your tires will wear out prematurely and running tire costs will dramatically increase.

Staggered Configurations

Maintains stock-like handling characteristics and maximizes both front and rear tire width. Tires can only be rotated left to right.

Wheels

Front Wheel Size: 18x9.5" ET22 Rear Wheel Size: 18x10” ET42

  • Available in: VS-5RS
  • Center ring required for front wheel

Tires

  • APEX Staff Pick Front Tire Size: 255/35-18 Rear Tire Size: 275/35-18
    • Stock tire sizes
    • Max Performance Summer: Michelin Pilot Sport 4S (300TW), Continental Extreme Sport 02 (340 TW), Falken FK510 (300 TW)
    • Extreme Performance Summer: Hankook RS-4 (200 TW), Falken RT660 (200 TW), Bridgestone RE71RS (200 TW), Nankang CR-S (200 TW)
    • R-Compound: Toyo R888R (100 TW), Nankang AR-1 (100 TW)
  • Wider Alternative Front Tire Size: 265/35-18 Rear Tire Size: 285/35-18
    • Very minor rubbing of the inside fender liner at full lock
    • Max Performance Summer: Michelin Pilot Sport 4S (300TW), Continental Extreme Sport 02 (340 TW), Falken FK510 (300 TW)
    • Extreme Performance Summer: Hankook RS-4 (200 TW)
    • R-Compound: No options currently available

Wheels

Front Wheel Size: 19x9.5" ET22 Rear Wheel Size: 19x10.5” ET45

  • Available in: VS-5RS
  • Center ring required

Tires

  • APEX Staff Pick Front Tire Size: 265/30-19 Rear Tire Size: 285/30-19
    • Very minor rubbing of the inside fender liner at full lock
    • Max Performance Summer: Michelin Pilot Sport 4S (300TW), Continental Extreme Sport 02 (340 TW)

Additional Resources

Big Brake Kit Clearances

We have tested many brake kits with the wheels listed in this guide. Please email us with any questions related to brake clearance, we’ll be happy to help.

Whether you are a casual weekend track warrior that still enjoys your car on the street, or a hard core racer competing for a spot on the podium, negative camber is a vital part of chassis setup that has many benefits. Not only will adding negative camber create more room for wider wheel and tire configurations, it more importantly improves handling, turn-in and tire longevity. Learn more in our blog article, The Positives of Negative Camber.

Still have questions?

Fill out our Fitment Recommendation form Call us: 925-245-0773 Email us: support@apexraceparts.com