2012 Cadillac CTS — Coupe Standard
The 2012 Cadillac CTS Coupe Standard shipped with 4 different factory tire sizes, depending on the wheel package it left the factory with (this can also reflect a staggered front/rear setup). Check your tire sidewall or door placard to confirm which one applies to your vehicle.
This trim shipped with more than one tire size (staggered fitment, front/rear, or optional wheel package). Confirm which one matches your vehicle by checking your tire sidewall or door placard.
235/50R18 (Front)
| Section width | 235 mm |
|---|---|
| Aspect ratio (sidewall height) | 50% (117.5 mm) |
| Rim diameter | 18" |
| Overall tire diameter | ~27.3" |
| Revolutions per mile | ~740 |
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265/45R18 (Rear)
| Section width | 265 mm |
|---|---|
| Aspect ratio (sidewall height) | 45% (119.3 mm) |
| Rim diameter | 18" |
| Overall tire diameter | ~27.4" |
| Revolutions per mile | ~736 |
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235/45R19 (Front)
| Section width | 235 mm |
|---|---|
| Aspect ratio (sidewall height) | 45% (105.8 mm) |
| Rim diameter | 19" |
| Overall tire diameter | ~27.3" |
| Revolutions per mile | ~738 |
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265/40R19 (Rear)
| Section width | 265 mm |
|---|---|
| Aspect ratio (sidewall height) | 40% (106 mm) |
| Rim diameter | 19" |
| Overall tire diameter | ~27.3" |
| Revolutions per mile | ~738 |
Compare prices at:
What this size means for your Cadillac CTS
On the 2012 Cadillac CTS Coupe Standard, the factory 235/50R18 measures about 27.3″ in overall diameter with a 117.5 mm (4.6″) sidewall, and completes roughly 740 revolutions per mile. Its 50-series aspect ratio gives a balanced everyday-passenger profile — enough sidewall to soak up road shock while keeping steering response crisp. In tire terms it is a passenger (P-metric / Euro-metric) size.
This is a staggered setup: the front axle runs 235/50R18 and the rear runs 265/45R18. The two sizes are not interchangeable, so order each for its correct axle and don't rotate front-to-rear.
Other 2012 Cadillac CTS trims
- Coupe Performance 235/50R18 (Front) / 265/45R18 (Rear) / 235/45R19 (Front) / 265/40R19 (Rear)
- Coupe Premium 235/50R18 (Front) / 265/45R18 (Rear) / 235/45R19 (Front) / 265/40R19 (Rear)
- Sedan 3.0L Luxury 235/55R17
- Sedan 3.0L Standard 235/55R17
- Sedan 3.6L Performance 235/50R18 / 245/45R19
- Sedan 3.6L Premium 235/50R18 / 245/45R19
- Sport Wagon 3.0L Base 235/55R17
- Sport Wagon 3.0L Luxury 235/55R17
- Sport Wagon 3.0L Performance 235/50R18
- Sport Wagon 3.6L Performance 235/50R18 / 245/45R19
- Sport Wagon 3.6L Premium 235/50R18 / 245/45R19
- V 255/40R19 (Front) / 285/35R19 (Rear)
Cadillac CTS tire sizes by year
- 2019 Cadillac CTS 245/45R17 / 255/35R19
- 2018 Cadillac CTS 245/45R17 / 245/40R18
- 2017 Cadillac CTS 245/45R17 / 245/40R18
- 2016 Cadillac CTS 245/45R17 / 245/40R18
- 2015 Cadillac CTS 245/45R17 / 245/40R18
- 2014 Cadillac CTS 235/50R18 (Front) / 265/45R18 (Rear) / 235/45R19 (Front) / 265/40R19 (Rear)
- 2013 Cadillac CTS 235/50R18 (Front) / 265/45R18 (Rear) / 235/45R19 (Front) / 265/40R19 (Rear)
- 2011 Cadillac CTS 235/50R18 (Front) / 265/45R18 (Rear) / 235/45R19 (Front) / 265/40R19 (Rear)
- 2010 Cadillac CTS 235/55R17
- 2009 Cadillac CTS 235/55R17 / 235/50R18
How to read a tire size
A tire size like 225/45R17 breaks down into three parts:
the first number is the section width in millimeters
(the tire's width from sidewall to sidewall), the second is the
aspect ratio — the sidewall's height as a percentage of
that width — and the number after the "R" is the rim
diameter in inches. A letter prefix (P or LT) indicates
Passenger or Light Truck construction; its absence usually means
Euro-metric sizing.
Some trucks and off-road tires instead use "flotation" sizing, like
37X12.50R17 — here the numbers are the tire's overall
diameter and width in inches directly, with the rim diameter last.
Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.