2012 Cadillac SRX Wheel Interchange

2012 Cadillac SRX Wheel Fitment Guide

Known OEM Fitment For 2012 Cadillac SRX

The values below are the known OEM specifications for the 2012 Cadillac SRX. Trims and option packages may use different wheel and tire sizes. If a value is not listed, it was not provided here. Always confirm against your owner’s manual, the driver door jamb tire label, and by using the on-page calculator on wheelinterchange.com.

Notes: The presence of both a 20 x 8.5 ET50 wheel and a 235/65R18 tire indicates multiple OEM packages. If your SRX differs, use the VIN, owner’s manual, and door jamb label to confirm your exact factory setup, then compare in the calculator.

How To Use The Wheel Interchange Calculator

The calculator on wheelinterchange.com lets you compare a donor wheel and tire to your 2012 Cadillac SRX and fine-tune custom sizes.

• Step 1 - Select “Installed on (your vehicle)” as 2012 Cadillac SRX.
• Step 2 - In “Wheels from (donor vehicle),” pick a donor or enter the OEM spec you know. For example, enter 20 x 8.5 ET50 or 235/65R18.
• Step 3 - Use “Custom wheel size” to change rim diameter, width, and offset. The tool will show inner clearance and outer poke changes compared to your baseline.
• Step 4 - Use “Custom tire size” to set section width and aspect ratio. Changing rim diameter updates tire diameter in the comparison so you can keep overall tire diameter close to stock.
• Step 5 - Aim to keep overall tire diameter within a small variance from stock to maintain speedometer accuracy and clearance. Visually confirm brake and suspension clearance before purchase.
• Step 6 - Save or print the comparison and take it to your tire shop for a final fitment check.

Fitment Checklist Before You Buy

• Bolt pattern - Wheel must be 6x120.
• Center bore - 66.9 mm hub-centric. If the aftermarket wheel bore is larger, use hub-centric rings sized to 66.9 mm inner diameter and the wheel’s outer diameter.
• Offset - Known OEM for a 20 x 8.5 wheel is ET50. If you change width, use the calculator to predict inner clearance to the strut and outer poke toward the fender.
• Wheel diameter and width - Confirm your SRX’s factory package on the door label and in the manual. Larger diameters reduce sidewall and may affect ride, braking clearance, and impact resistance.
• Tire load index and speed rating - Must meet or exceed the OEM ratings on your door jamb label.
• Overall diameter - Keep the new tire’s outside diameter close to stock to protect ABS, AWD behavior, and speedometer accuracy.
• Brake clearance - Spoke and barrel must clear calipers. Do a physical test fit whenever possible.
• Lug hardware - Thread is M14 x 1.5. Match lug nut seat type to the wheel design. Do not mix seat types.
• TPMS - Plan to transfer sensors or use compatible replacements. Confirm compatibility for your SRX before ordering.
• Spacers - Use only hub-centric spacers with adequate stud engagement if required. Recalculate offset in the tool.
• Alignment - Check alignment after changing wheel width or offset to avoid uneven tire wear.

Plus Sizing And Common Upgrades

The SRX had multiple OEM packages. One known wheel option is 20 x 8.5 ET50, and one known tire option is 235/65R18. If you are moving between sizes, keep overall tire diameter close to stock to protect handling and systems.

• Use the calculator to set your current OEM baseline, then adjust “Custom wheel size” and “Custom tire size.”
• As rim diameter increases, reduce tire aspect ratio to maintain overall tire diameter.
• Watch inner clearance to struts and liners when increasing width, and outer poke for fender clearance.
• Confirm load index remains at or above factory. Styling upgrades should not reduce load capacity.

Installation Tips

• Preparation - Park on level ground, chock wheels, and use a proper jack and stands.
• Clean mounting faces - Remove rust and debris from the hub and wheel mounting surfaces. Ensure wheels seat flush.
• Hub-centric rings - If used, install rings fully and evenly. Inner diameter must be 66.9 mm.
• Lug hardware - Verify M14 x 1.5 thread and correct seat type. Do not lubricate studs or lug seats unless OEM procedure specifies.
• Torque - Hand start lugs, snug in a star pattern, then torque in stages to the factory specification listed in your owner’s manual.
• TPMS - Transfer or install sensors, then perform the relearn procedure required for your SRX.
• Final checks - Spin each wheel by hand to confirm brake and suspension clearance. After 50 to 100 miles, re-torque lugs and recheck clearances.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench - https://www.amazon.com/s?k=1%2F2+inch+torque+wrench&tag=auto-spec-20
• M14 x 1.5 lug nuts, correct seat for your wheel - https://www.amazon.com/s?k=M14x1.5+lug+nuts&tag=auto-spec-20
• Hub-centric rings 66.9 mm ID - match the OD to your wheel bore - https://www.amazon.com/s?k=66.9+hub+centric+rings&tag=auto-spec-20
• GM TPMS relearn tool - https://www.amazon.com/s?k=GM+TPMS+relearn+tool&tag=auto-spec-20

FAQs

• What is the bolt pattern on the 2012 Cadillac SRX

  6x120.

• What is the center bore

  66.9 mm. Use hub-centric wheels or rings sized to 66.9 mm inner diameter.

• What wheel offset works on this vehicle

  A known OEM wheel is 20 x 8.5 with ET50. For other widths and diameters, use the calculator to maintain proper inner clearance and outer poke.

• What tire size came stock

  235/65R18 is a known OEM size for the SRX. Other factory sizes may exist by trim. Check your door jamb label and owner’s manual.

• Can I use 20 inch wheels

  Yes. A 20 x 8.5 ET50 wheel is listed as an OEM specification here. Match with an appropriate tire size that keeps overall diameter close to stock and verify clearances with the calculator.

• Do I need hub-centric rings

  Only if the aftermarket wheel has a larger center bore than 66.9 mm. Choose rings with 66.9 mm inner diameter and the correct outer diameter for your wheel.

• What is the lug nut thread size and seat type

  Thread size is M14 x 1.5. Seat type was not provided. Match the seat type to your wheel manufacturer’s specification.

• What is the lug nut torque spec

  Not provided here. Always torque to the factory specification in your owner’s manual, and re-torque after 50 to 100 miles.