2007 Cadillac CTS-V Wheel Interchange

2007 Cadillac CTS-V Wheel Fitment Guide

Known OEM Fitment For 2007 Cadillac CTS-V

The specs below reflect known factory equipment for the 2007 Cadillac CTS-V. If a detail is not listed, confirm it in your owner’s manual or with a GM dealer before purchasing wheels or tires.

Torque specs, lug nut seat style, TPMS details, and brake package clearances can vary. Always verify these with OEM documentation for your exact VIN.

How To Use The Wheel Interchange Calculator

The on-page calculator lets you compare a donor wheel and tire setup to your 2007 CTS-V, and also try a custom size. It updates tire diameter automatically when you change rim diameter.

• Open the calculator and set Installed on to 2007 Cadillac CTS-V.
• Set Wheels from to the donor vehicle or enter the donor wheel specs directly.
• Use Custom wheel size to test different rim diameter, width, and offset. Backspacing and inner or outer clearance changes are calculated for you.
• Use Custom tire size to change section width and aspect ratio. The tool recalculates overall diameter so you can keep it close to stock.
• Review the comparison for brake caliper clearance, fender clearance, poke and inset changes, and speedometer error from tire diameter changes.
• Print or screenshot your results and bring them when you shop or test fit.

Fitment Checklist Before You Buy

• Bolt pattern must be 6x115. 6x114.3 or other PCDs are not a safe fit.
• Center bore is 70.3 mm. If the wheel bore is larger, use 70.3 mm hub-centric rings. If smaller, the wheel will not seat.
• Thread size is M12 x 1.5. Match lug nuts to both the thread and the wheel’s seat type. Do not mix conical, ball, or mag seats.
• Offset and backspacing: Compare your choice to the OEM ET 48 mm and backspacing 6.14 in using the calculator. Check inner strut clearance and outer fender clearance.
• Brake caliper clearance: The CTS-V uses performance brakes. Confirm spoke and barrel clearance with a physical test fit or a template from the wheel maker.
• Tire overall diameter: Keep new tire diameter close to the OEM 245/45R18, about 26.7 in. Many owners target within about 3 percent, but verify ABS, stability control, and speedometer impact.
• Load rating: Wheel and tire load index must meet or exceed OEM. Check the tire’s load index and the wheel manufacturer’s load rating.
• TPMS: Sensor style and frequency can vary by year or production run. Confirm compatibility by VIN with a GM dealer or trusted supplier.
• Stud engagement: Ensure full thread engagement on each lug nut. Do not rely on spacers or extended lugs unless you have verified safe thread engagement and hubcentric support.
• Alignment: Plan a post-install alignment if you change wheel width, offset, or tire size.

Plus Sizing And Common Upgrades

Many CTS-V owners explore plus sizing to improve handling or appearance. Popular routes include:

• Plus-one to 19 in rims while selecting a tire size that keeps overall diameter near stock. Use the calculator to maintain speedometer accuracy and clearance.
• Wider wheels for more grip. Compare inner and outer position changes to protect against rubbing on the strut, liner, or fender lip.
• Staggered setups for a performance look. Confirm rotation plans, spare strategy, and that the rear fitment clears under compression.
• Track-focused tires. Verify heat range, load index, and clearance at full lock and full bump. Some track compounds run wide for a given labeled size.

Because offset needs depend on exact wheel width, tire model, and suspension ride height, confirm every change with the calculator and a physical test fit. If a spec is not listed above, verify with OEM documentation.

Installation Tips

• Test fit a front and a rear wheel without tires first when possible. Spin the hub by hand to check for caliper and suspension clearance.
• Clean the hub face and center pilot. Remove rust and debris to ensure the wheel seats flush. Use hub-centric rings if the wheel bore is larger than 70.3 mm.
• Hand start all lug nuts, then snug in a crisscross pattern. Final torque should follow the OEM spec in your owner’s manual or service manual.
• If using spacers, use only hub-centric spacers that maintain a 70.3 mm pilot and verify proper stud engagement. Re-check torque frequently.
• Install or program TPMS sensors compatible with your 2007 CTS-V. Follow relearn procedures as specified by GM.
• Re-torque after 50 to 100 miles of driving.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench
• M12 x 1.5 lug nuts - match the correct seat type for your wheels
• Hub-centric rings 70.3 mm ID
• Digital caliper for measuring hub bore, lip height, and spacer thickness

FAQs

• What is the bolt pattern on the 2007 Cadillac CTS-V?

  6x115. Wheels with any other PCD will not seat correctly and should not be used.

• Can I use 6x114.3 wheels on a 6x115 CTS-V?

  No. The stud circle is different. Even small PCD mismatches are unsafe.

• Do I need hub-centric rings?

  If the aftermarket wheel’s center bore is larger than 70.3 mm, use rings to center the wheel on the hub. If the wheel bore is 70.3 mm, rings are not needed. A wheel with a smaller bore will not fit.

• What tire diameter should I target?

  The OEM 245/45R18 is about 26.7 inches in overall diameter. Keep new setups close to this to protect ABS and speedometer accuracy. Use the calculator to check percentage change.

• What offset range can I run?

  The factory offset is ET 48 mm. Safe alternatives depend on your chosen wheel width, tire model, and ride height. Use the calculator to compare inner and outer clearance to OEM, then perform a physical test fit.

• What is the correct lug nut torque?

  Refer to the Cadillac owner’s manual or GM service manual for your exact torque spec. Do not guess. Re-torque after 50 to 100 miles.

• Will big brake kits fit behind smaller diameter wheels?

  Clearance depends on the brake kit and wheel design. Always check with a template from the brake or wheel manufacturer and verify with a test fit.

• Can I run spacers on the CTS-V?

  Possibly, but use hub-centric spacers that maintain a 70.3 mm pilot and ensure proper stud engagement. Check local regulations and re-torque regularly.

• Do I need new TPMS sensors?

  If reusing OEM wheels and sensors, you may be able to transfer them. Sensor frequency and style can vary. Confirm compatibility by VIN and follow GM relearn procedures.