2018 Cadillac ATS
Direct Fit- Bolt pattern5x115 · Match
- Center bore70.3 mm · Match
- Wheel geometryCompatible with OEM envelope
Geometry within known OEM envelope (approx. outer change -3 mm, inner change 3 mm vs mid OEM).
Baseline mounting dimensions used for interchange decisions.
Multiple OEM configurations exist for this vehicle. Fitment can vary by trim, brakes, and factory wheel package – confirm your exact setup before buying.
Results are evaluated from bolt pattern, center bore direction, OEM width/offset envelope, and lug hardware – not bolt pattern alone.
Geometry within known OEM envelope (approx. outer change -3 mm, inner change 3 mm vs mid OEM).
Geometry within known OEM envelope (approx. outer change -3 mm, inner change 3 mm vs mid OEM).
Geometry within known OEM envelope (approx. outer change -3 mm, inner change 3 mm vs mid OEM).
Geometry within known OEM envelope (approx. outer change 5 mm, inner change -5 mm vs mid OEM).
Geometry within known OEM envelope (approx. outer change -5 mm, inner change 5 mm vs mid OEM).
Geometry within known OEM envelope (approx. outer change -5 mm, inner change 5 mm vs mid OEM).
Mounting dimensions align with known OEM fitment for this vehicle.
Mounting dimensions align with known OEM fitment for this vehicle.
Mounting dimensions align with known OEM fitment for this vehicle.
Mounting dimensions align with known OEM fitment for this vehicle.
Geometry within known OEM envelope (approx. outer change -4 mm, inner change 4 mm vs mid OEM).
Geometry within known OEM envelope (approx. outer change -4 mm, inner change 4 mm vs mid OEM).
Geometry within known OEM envelope (approx. outer change -4 mm, inner change 4 mm vs mid OEM).
Geometry within known OEM envelope (approx. outer change -4 mm, inner change 4 mm vs mid OEM).
Geometry within known OEM envelope (approx. outer change -4 mm, inner change 4 mm vs mid OEM).
Geometry within known OEM envelope (approx. outer change -4 mm, inner change 4 mm vs mid OEM).
Potential requirementWheel spacer ≈ 6 mm
Potential requirement: 6 mm wheel spacer. Estimated outer position is about 6 mm farther inward than the mid OEM package.
Potential requirementWheel spacer ≈ 6 mm
Potential requirement: 6 mm wheel spacer. Estimated outer position is about 6 mm farther inward than the mid OEM package.
Potential requirementWheel spacer ≈ 6 mm
Potential requirement: 6 mm wheel spacer. Estimated outer position is about 6 mm farther inward than the mid OEM package.
Potential requirementWheel spacer ≈ 6 mm
Potential requirement: 6 mm wheel spacer. Estimated outer position is about 6 mm farther inward than the mid OEM package.
Potential requirementWheel spacer ≈ 6 mm
Potential requirement: 6 mm wheel spacer. Estimated outer position is about 6 mm farther inward than the mid OEM package.
Donor width/offset sits outside the known OEM envelope for this vehicle.
Donor width/offset sits outside the known OEM envelope for this vehicle.
Donor width/offset sits outside the known OEM envelope for this vehicle.
Showing 24 of 47 evaluated donors. Same-model years are prioritized.
Only years with evidence-based interchange relationships are listed. Adjacent years are not assumed compatible.
Compare a donor vehicle or custom wheel against this 2019 Cadillac ATS.
Compare wheel compatibility between two vehicles
2019 Cadillac ATS
Products below are matched to required fitment dimensions from our parts inventory. Confirm seat style, thickness, and clearance before ordering.
M12 x 1.5

M12 x 1.5 · Confirm wheel seat style before ordering
View on Amazon →
M12 x 1.5 · Confirm wheel seat style before ordering
View on Amazon →
M12 x 1.5 · Confirm wheel seat style before ordering
View on Amazon →5x115 · 70.3 mm hub
Directional bolt-pattern adapters. A spacer does not change PCD.

5x115 → 5x120.7
View on Amazon →
5x115 → 5x120.7
View on Amazon →
5x115 → 5x127
View on Amazon →As an Amazon Associate we earn from qualifying purchases. Product availability and pricing may change.
Wheel interchange depends on more than bolt pattern. Where data is available, this site compares:
A normal wheel spacer does not change bolt pattern. Hub rings cannot enlarge a wheel bore that is smaller than the hub. Brake clearance and tire package fitment still require vehicle-specific checks when not confirmed in the dataset.
Problem: you need to confirm whether replacement wheels and tires will fit a 2019 Cadillac ATS. This guide gives a step by step plan to validate fitment, list the constraints, and resolve common issues.
Required information and tools before you start. You must have the vehicle or OEM documentation available. Use the on-page calculator to compare donor wheels versus installed wheels and adjust custom sizes.
| Item | Known value (provided) | Notes / validation |
|---|---|---|
| Bolt pattern | 5x115 | Verify on hub or OEM spec sheet |
| Center bore (mm) | 70.3 | Measure hub face to bore lip if unsure |
| Thread size | M12 x 1.5 | Matches stud thread pitch; confirm lug seat type separately |
| Rim diameter (in) | 18 | OEM wheel rim diameter reported as 18 inches |
| Rim width (in) | 8.0 | Use when checking acceptable tire widths and offsets |
| Offset (ET, mm) | 42 | Important for clearance and backspacing |
| Backspacing (in) | 5.65 | Matches offset; useful when measuring inside clearance |
| Tire section width (mm) | 225 | OEM tire size listed; confirm tire rim diameter below |
| Tire aspect ratio (%) | 45 | Used to calculate diameter and speedometer effect |
| Tire rim diameter (R) | 17 | This value conflicts with the OEM wheel rim diameter of 18 inches. Do not assume which is correct. Use the vehicle placard, VIN lookup, or the on-page calculator for validation. |
Tools recommended: torque wrench, hub centric rings if needed, correct lug nuts for M12 x 1.5 seats.
Helpful Amazon searches: torque wrench, hub centric rings, lug nuts M12 x 1.5
Start with the problem of unknown compatibility. Work through these steps methodically.
Validation prevents surprises. Use these checks before you finish the job.
If any OEM value was unknown or variable by trim, note that as an assumption in your record. Use the on-page calculator and VIN lookup to convert assumptions into confirmed values.
When problems appear, isolate the cause using these practical solutions.
You started with conflicting data and a risk of incorrect fitment. Now you have a clear checklist. The recommended next steps are: confirm the rim diameter from the placard or VIN, use the on-page calculator, and test-mount one wheel. Keep records of assumptions and validations for future reference.
If you want, I can walk through a specific donor wheel entry in the calculator with you. That will convert assumptions into concrete clearance and diameter comparisons.