2013 Cadillac ATS Wheel Interchange

2013 Cadillac ATS Wheel Fitment Guide | wheelinterchange.com

Known OEM Fitment For 2013 Cadillac ATS

The values below are provided inputs and may represent different trims or option packages. Do not assume they apply to every 2013 ATS. Always verify against your door jamb tire label, the owner manual, and the on-page calculator results before purchasing.

Notes:

• Multiple OEM wheel and tire sizes existed by trim, which explains the 18 inch wheel and 17 inch tire entries above. Confirm your exact factory size from the driver door label and your build data.
• 5x115 means 5 studs on a 115 mm pitch circle. Use only 5x115 wheels for direct fit. Do not attempt to force 5x114.3 wheels.
• Center bore 70.3 mm is the hub size on the vehicle. Aftermarket wheels with a larger bore require hub centric rings sized to 70.3 mm at the hub side.
• Backspacing values depend on how rim width is measured and may differ from calculated numbers. Measure physically during test fit if in doubt.

How To Use The Wheel Interchange Calculator

The calculator on this page lets you compare a donor wheel and tire setup to your 2013 ATS, and also test custom sizes. Follow these steps:

• Enter Wheels from (donor vehicle). Use known specs if you have them, or choose a similar size to what you are considering.
• Enter Installed on (your vehicle) as 2013 Cadillac ATS to set the baseline geometry.
• Optional, set Custom wheel size with your target rim diameter, width, and offset. The calculator will update clearances and track changes.
• Optional, set Custom tire size by section width and aspect ratio. When you change rim diameter, the calculator updates the comparison tire diameter so you can see speedometer and fender gap effects.
• Review inner clearance at the strut and control arms, outer poke relative to the fender, and any change in scrub radius implied by offset changes.
• Use the rolling diameter comparison to keep overall tire diameter close to stock. A small variance is usually acceptable for drivability and speedometer accuracy.

Always confirm against OEM information. For ATS, check the door jamb label for your factory tire size and load index, and use that as your baseline in the calculator.

Fitment Checklist Before You Buy

• Bolt pattern match, 5x115 only. Do not rely on wobble bolts or ovaled holes.
• Center bore, vehicle hub is 70.3 mm. If the wheel bore is larger, plan for hub centric rings 70.3 mm to your wheel bore. If smaller, the wheel does not fit.
• Lug hardware, thread is M12 x 1.5. Confirm lug nut seat type with the wheel manufacturer. Do not mix conical, ball, or mag seats.
• Offset and backspacing, use the calculator to compare inner clearance to the strut and outer poke to the fender. Test fit if you are close.
• Brake clearance, verify spoke and barrel clearance over calipers and rotor hat. Template from the wheel maker is ideal, otherwise perform a physical test fit.
• Tire overall diameter, keep close to stock to protect ABS, traction control, and speedometer. Use the calculator to see percentage change.
• Load rating, ensure both wheel and tire load ratings meet or exceed the ATS requirements listed on your door label.
• TPMS, plan to transfer sensors or install compatible new sensors and perform a relearn per GM procedure.
• Condition, check used wheels for cracks, bends, and previous repairs. Reject wheels with structural damage.

Plus Sizing And Common Upgrades

Because multiple factory sizes existed, start from the OEM size printed on your door label. If your label shows 225/45R17, its approximate outside diameter is about 634 mm, about 25.0 in. Calculation example: 225 x 0.45 x 2 + 17 in x 25.4 mm per in.

• Overall diameter, keep the new tire within a small percentage of your baseline. Use the calculator to see speedometer change and fender gap differences before buying.
• Wider wheels and tires, check inner suspension and outer fender clearance at full lock and full bump. The calculator provides a starting point, then verify with a test fit.
• Offset changes, small changes can be workable but can affect scrub radius, steering feel, and bearing loads. Evaluate with the calculator and inspect real clearance to brake lines and fender liners.
• Staggered setups, confirm rolling diameter remains matched front to rear to avoid ABS or stability control issues, and verify rotation limitations if that matters to you.

If any dimensions are unknown or differ by trim, use the calculator with your measured wheel specs and confirm with OEM documentation before purchase.

Installation Tips

• Prepare the hub, wire-brush the hub face and clean rust. A clean, flat mounting surface reduces vibration.
• Hub centering, if the wheel bore is larger than 70.3 mm, install correct hub centric rings and seat them fully.
• Test fit, install a front wheel by hand and spin to check for interference at calipers and suspension. Repeat in the rear. Check at full steering lock.
• Lug nuts, thread by hand to avoid cross-threading. Use only M12 x 1.5 hardware with the correct seat type for your wheels.
• Torque, tighten in a star pattern in stages. Use the torque spec from your owner manual or GM service information. Re-torque after 50 to 100 miles.
• TPMS, transfer or install compatible sensors and perform relearn following the 2013 Cadillac ATS procedure in the owner manual or with a TPMS tool.
• Road test, listen for rubbing over bumps and during tight turns. Inspect inner liners and fender lips after the first drive.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench
• M12 x 1.5 lug nuts, confirm seat type
• Hub centric rings, 70.3 mm to your wheel bore
• GM TPMS relearn tool

Also useful, jack stands, low profile jack, wire brush, anti seize for the hub face, and a thread chaser for M12 x 1.5 studs.

FAQs

• Will 5x114.3 wheels fit my 2013 ATS with 5x115 hubs

  No direct fit. The patterns are different. For safety and proper centering, use only 5x115 wheels or professionally engineered adapters that meet load and hardware requirements. Verify stud engagement and fender clearance if adapters are used.

• What is the correct center bore for hub centric fitment

  The ATS hub is 70.3 mm. Wheels with a larger bore need hub centric rings sized to 70.3 mm at the hub side and the wheel bore on the other side. Wheels with a smaller bore will not fit the hub.

• How do I choose an offset that works

  Start from your OEM baseline and use the calculator to compare inner clearance and outer poke. Small offset changes can be workable but must be verified against brakes, suspension, and fenders. Test fit if you are close.

• Can I reuse my factory TPMS sensors

  Yes, if the new wheels accept the sensors and the seals are in good condition. Otherwise use compatible replacements and perform a relearn per GM procedure using the owner manual or a TPMS tool.

• What lug nuts should I use

  The thread is M12 x 1.5. The seat type depends on the wheel design. Confirm conical, ball, or mag seat with the wheel manufacturer and use matching hardware only.

• How close should my new tire diameter be to stock

  Use the door label size as your baseline and compare in the calculator. Keep the difference small to maintain speedometer accuracy and avoid stability control faults. If your label shows 225/45R17, that is about 25.0 in in overall diameter.

• Why does calculated backspacing not match a listed number

  Backspacing depends on how rim width is defined and measured. Manufacturers may round or use different reference points. Use the calculator as a guide and confirm with physical measurements during test fit.

When a value is unknown or varies by trim, use the on-page calculator with your actual wheel and tire sizes and confirm against OEM sources like the door label, owner manual, and GM service information. Safety first, always test fit before mounting tires.