2014 Cadillac CTS Wheel Interchange

2014 Cadillac CTS Wheel Fitment Guide

Known OEM Fitment For 2014 Cadillac CTS

The following factory specifications are documented for the 2014 Cadillac CTS. Equipment varied by trim and package, so some values may differ on your specific vehicle. Always confirm against your door-jamb tire label, the owner’s manual, or OEM parts data before purchasing wheels or tires.

Notes: The presence of both a 19 inch wheel spec and a 245/45R17 tire spec indicates multiple OEM configurations were offered in 2014. Your CTS may differ. Use the on-page calculator to compare what you have to what you plan to install, and verify final sizes with OEM sources.

How To Use The Wheel Interchange Calculator

The calculator lets you compare a donor setup to your CTS and test custom wheel and tire sizes before you buy.

• Set Installed on (your vehicle) to 2014 Cadillac CTS. If your exact factory size is different from the values above, enter the sizes from your door label or current wheels.
• Set Wheels from (donor vehicle) to the vehicle you are considering as a source, or input the donor wheel’s exact size if you know it.
• Use Custom wheel size to try the rim diameter, width, and offset you are considering. Width changes split roughly half inward and half outward from the hub. Offset changes move the whole wheel in or out.
• Use Custom tire size to keep overall diameter close to stock. When you change rim diameter, adjust tire aspect ratio so overall diameter stays similar. The calculator shows overall diameter difference and speedometer change.
• Review key outputs: inner clearance change (suspension, strut, and brake side), outer poke change (fender side), overall diameter change, and backspacing. Aim for adequate inner clearance and fender clearance at full lock and full compression.
• Brake caliper clearance is not guaranteed by numbers alone. Always test fit a wheel on the front axle and rotate by hand to confirm clearance to calipers, knuckles, and wheel weights.

Fitment Checklist Before You Buy

• Bolt pattern: Must be 5x120. Adapters add complexity and thickness; avoid unless you fully understand their impact.
• Center bore: Hub is 66.9 mm. If a wheel’s center bore is larger, plan hub-centric rings to 66.9 mm. If smaller, the wheel will not seat on the hub.
• Thread and seat: Threads are M14 x 1.5. Verify lug seat type (typically conical or ball) matches the wheel. Do not mix seat types.
• Width and offset: Use the calculator to ensure adequate inner clearance and reasonable outer poke relative to ET 34 mm as a known reference.
• Brake clearance: Confirm spoke and barrel clearance over the CTS brake calipers, especially with larger-diameter or low-offset wheels.
• Tire diameter: Keep overall tire diameter close to your OEM size to protect ABS, stability control, and speedometer accuracy.
• Load and speed rating: Tires must meet or exceed OEM load index and speed rating listed on your door label.
• TPMS: Plan for compatible sensors and programming as required.

Plus Sizing And Common Upgrades

The 2014 CTS was offered with multiple factory wheel and tire sizes. If you upsize the rim diameter, use a lower-profile tire to keep overall diameter close to stock. Small changes in offset move the wheel in or out and can affect fender and suspension clearance. The calculator will show inner clearance and outer poke changes so you can judge what is reasonable for your car. Because trims differ, do not assume another CTS size will fit yours without checking clearances and verifying against OEM data. When in doubt, test fit and inspect at full steering lock and over bumps.

Installation Tips

• Park on level ground, chock wheels, and use jack stands under proper points. Never rely on a jack alone.
• Clean hub faces and wheel mounting pads with a nylon brush. Remove rust and debris to prevent vibration.
• If the wheel center bore is larger than 66.9 mm, install hub-centric rings sized to 66.9 mm. A smaller bore will not fit.
• Hand-start M14 x 1.5 lug nuts and snug in a star pattern. Use a torque wrench for final tightening. Re-torque after 50 to 100 miles.
• Do not lubricate wheel studs or lug seats unless specified by OEM instructions.
• Transfer or program TPMS sensors as required, then set cold tire pressures to the door-label spec and perform a road test for rubs and vibrations.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench: Search on Amazon
• M14 x 1.5 lug nuts matching your wheel’s seat type: Search on Amazon
• Hub-centric rings for 66.9 mm hubs: Search on Amazon
• Tire pressure gauge: Search on Amazon

Also useful: floor jack, jack stands, breaker bar, nylon or brass brush, anti-seize for the hub face only, valve cores and caps, and a TPMS programming tool if needed.

FAQs

What is the bolt pattern for the 2014 Cadillac CTS?
5x120.

What center bore does the CTS use?
66.9 mm. Use hub-centric rings if your wheel’s center bore is larger. A smaller bore will not fit.

What lug nut thread size is correct?
M14 x 1.5. Match the lug seat style to the wheel design.

Why do I see both 19 inch wheels and 245/45R17 tires listed?
Multiple OEM configurations were offered for 2014. Your car may differ by trim or package. Confirm your exact factory size on the door label or with OEM documentation, and use the calculator to compare alternatives.

How close should overall tire diameter be to stock?
Keep it as close as practical. Even small changes affect speedometer, ABS, and stability control. Use the calculator’s diameter and speedometer change readouts to guide your choice.

Will different offsets fit my CTS?
Possibly, but it depends on width, brakes, and suspension clearance. Use the calculator to view inner clearance and outer poke changes, then test fit to confirm caliper and fender clearance.

Do I need new lug nuts for aftermarket wheels?
Often yes, because many aftermarket wheels use a different seat type or use tuner lugs. Ensure M14 x 1.5 thread and the correct seat style for the wheel.

How do I check brake caliper clearance?
Test fit the front wheel, spin it by hand, and inspect spoke and barrel clearance to the caliper and wheel weights. Clearance cannot be guaranteed by measurements alone.

Can I reuse my TPMS sensors?
Usually yes if the sensor type is compatible with the new wheels. Transfer or install compatible sensors and perform any required relearn or programming.