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2005 Cadillac SRX tire sizes & fitment

Approved tire and wheel sizes for the 2005 Cadillac SRX, sourced from manufacturer fitment data and refreshed monthly.

Approved fitments

Tire size Rim size PCD (bolt pattern) Offset Load index Speed rating
235/60R18 OEM R18 6x115 N/A N/A N/A
255/55R18 OEM R18 6x115 N/A N/A N/A
235/65R17 OEM 7.5x17 6x115 51mm 104 H
235/60R18 8x18 6x115 51mm 103 V
235/55R20 8x20 6x115 50mm 105 V
255/50R20 8x20 6x115 51mm 109 V
235/65R17 OEM R17 6x115 N/A N/A N/A
255/60R17 OEM R17 6x115 N/A N/A N/A

2005 Cadillac SRX wheel bolt pattern & specs

Bolt pattern (PCD)6x115
Wheel thread / lug sizeM12x1.5
Center bore70.3 mm
Sourceadaptitusa-reference

The 2005 Cadillac SRX uses a 6x115 bolt pattern, M12x1.5 lug thread, and a 70.3 mm center bore. Bolt pattern and hub specs are stable across a model generation; always confirm against your vehicle's existing wheel before buying aftermarket wheels, spacers, or adapters. Source: community wheel-fitment reference data. Full wheel specs →

Best by use case

Four tires, four jobs

Best all-season

Goodyear

Assurance MaxLife

all-season touring, UTQG 820, 85,000-mi warranty

Best budget

Goodyear

Assurance MaxLife

Lowest cost per mile in this size; UTQG 820

Best quiet

Michelin

Defender 2

68 dB cabin noise (EU label); quietest in this size

Best winter

Toyo

Celsius CUV

All-weather; ice/snow grip

See the best tires for the Cadillac SRX, ranked by category →

Tire recalls & safety complaints for the Cadillac SRX →

Plus-size and winter-downsize options for every Cadillac SRX factory size →

Compatible alternative sizes for 235/60R18

Sizes within the ETRTO ±3% overall-diameter safe-fit tolerance. Each row links to the size's own page.

Alternative size%Δ ODCategoryVerdict
205/75R17 0.01% winter narrower Safe
255/65R16 -0.18% alternative Safe
215/60R19 0.19% plus 1 Safe
255/60R17 -0.19% alternative Safe
255/55R18 -0.20% wider Safe

For the full list of alternatives with comfort/handling impact, see 235/60R18 upsize options. To check an arbitrary size pair, use the tire compatibility calculator.

Check a different size against this vehicle

Type any tire size below; we'll compute its overall-diameter delta against the OEM 235/60R18 and verdict using the ETRTO ±3% rule.

Common upgrade paths

Use the plus-size calculator to evaluate any rim step against the OEM size.

How to choose tires for the 2005 cadillac SRX

The 2005 Cadillac SRX ships from the factory on 235/60R18 tires mounted on R18 wheels. 6 approved fitments are documented for this model year, allowing some flexibility between performance, comfort, and winter compounds. The Compatible alternative sizes table above lists every safe substitution within the ETRTO ±3% overall-diameter tolerance.

Tire choice on the Cadillac SRX comes down to three trade-offs that matter more than brand loyalty: load index (must equal or exceed the OEM number), speed rating (must match or exceed the placard), and UTQG treadwear (higher means longer life, lower usually means stickier rubber). Owners replacing factory tires with the same compound class, for example all-season for all-season, generally see no change in ride characteristics or fuel economy. Switching categories (performance summer to all-season touring, for example) is where the trade-offs show up at the contact patch.

For 2005 Cadillac SRX owners considering a plus-size upgrade, the safer option is a Plus-1 step (one rim size up with a 10-point aspect drop and ~10 mm of additional section width). Plus-2 is technically viable on this chassis if the alternative-sizes table lists a Plus-2 candidate within tolerance, but expect a meaningful ride-harshness penalty and a tire-cost premium of 30–60% per tire relative to the OEM fitment. For winter use the recommended pattern is one width step down (e.g. from a 235 to a 225) with the aspect ratio bumped up to preserve overall diameter; narrower tires apply higher contact pressure per square inch on snow, which translates directly into shorter braking distances. The plus-size calculator evaluates any specific rim step against this OEM size.

Before purchasing, verify the tire size on the driver-door placard of your specific 2005 Cadillac SRX, since trim levels and option packages can shift the original fitment from what is documented here. The placard reading is the authoritative source per FMVSS 110, and dealers will reference the placard rather than aftermarket catalogs when validating warranty claims.

NHTSA-reported issues for 2005 cadillac SRX

2
Complaints
0
Crashes
0
Injuries
0
Deaths

Top issue category: Tires (General)

Most reported: Tires (General) (1) · TPMS (1)

Reported across: 2005 – 2005 (1 year)

What owners described

Blowout or sudden deflation is the most common description, in 15% of these reports. Percentages are shares of the 20 reports covering every model year of the Cadillac SRX that include a written account; a single report can describe more than one problem, so they do not total 100%.

Reported problemThis subjectAll tire complaintsRelative
Blowout or sudden deflation 15% 20% 0.7×
Pressure-monitoring (TPMS) fault 15% 2% 6.3×
Tread or belt separation 5% 13% 0.4×
Sidewall failure 5% 15% 0.3×
Bubble or bulge in the tire 5% 6% 0.8×
Loss of control, rollover or collision 5% 8% 0.6×

Mileage at failure

6 of these reports state an odometer reading. The middle report is at 27,364 miles, with 8 in 10 falling between 5,000 and 120,000 miles.

In owners' own words

Verbatim excerpts from complaints filed with NHTSA about Cadillac SRX. Reports are published by NHTSA as filed and are lightly cleaned here only to remove intake codes.

I HAD A BLOW OUT ON THE OHIO TURNPIKE. IT WAS AT THAT TIME I FIRST CAME TO KNOW CADILLAC NO LONGER PROVIDED SPARE TIRES AS STANDARD EQUIPMENT. A PUMP INCLUDED WHICH IS USELESS IN THE CASE OF A BLOW OUT exists. THE ISSUE IS HOW CAN CADILLAC BE ALLOWED TO SELL CARS WITH OUT SPARE TIRES. IT IS OBVIOUSLY A SAFETY DEVICE THAT SHOULD BE MANDATORY.

NHTSA complaint 1075612 · 2011 vehicle

THE CONTACT OWNS A 2013 CADILLAC SRX EQUIPPED WITH MICHELIN LATITUDE TOUR TIRES, SIZE: 235/55/R20. THE TIRES WERE MANUFACTURED ON APRIL 15, 2013. THE CONTACT STATED THAT THE TIRES HAD TREAD SEPARATION. THE CONTACT ALSO STATED THAT THE TREAD WAS SEPARATING IN CHUNKS. THE VEHICLE WAS TAKEN TO THE DEALER TO HAVE THE TIRES INSPECTED. THE CONTACT WAS INFORMED THAT ALL FOUR TIRES NEEDED TO BE REPLACED. THE TIRES WERE NOT REPLACED. THE TIRES WERE ORIGINAL EQUIPMENT. THE MANUFACTURER WAS NOT NOTIFIED OF THE TIRE FAILURES. THE APPROXIMATE TIRE AND VEHICLE FAILURE MILEAGE WAS 24,600. THE VIN WAS NOT AVAILABLE.

NHTSA complaint 1249974 · 2013 vehicle

Vehicle is low mileage for its age (@ 30,000 miles). Four (4) Goodyear tires identified in this report were purchase 04/28/2024 and as of 07/01/2024 had been driven @ 600 miles. On 07/01/2024, the rear drivers' side tire deflated while the vehicle was operational. Vehicle was immediately pulled off the roadway into a parking lot. Tire was removed by roadside service and at that time was noticed a clear "rupture" (although the tire was deflated, the sidewall had a noticeable bulge covering approximately 20% of the tires sidewall surface).

NHTSA complaint 2004173 · 2016 vehicle

DT: THE CONTACT STATED TIRE PRESSURE MONITORING SENSORS WERE DEFECTIVE. THE MANUFACTURERS RECOMMENDED TIRE PRESSURE BE 32 PSI. HOWEVER, WITHIN 24 HOURS THE SENSORS SUGGESTED THE PRESSURE DROPPED IN ALL FOUR TIRES. THIS CAUSED THE WARNING LIGHTS TO ILLUMINATE, SIGNALING LOW TIRE PRESSURE. THE SENSORS PROVIDED A FALSE READING WHICH ALERTED THE CONTACT THAT AIR SHOULD BE ADDED TO THE TIRES. THIS CAUSED IMPROPER PRESSURE TO BE ADDED, RESULTING IN OVER INFLATION. HE TOOK THE VEHICLE TO THE DEALER THREE TIMES FOR THIS PROBLEM. EACH TIME THE DEALER CALIBRATED THE SENSORS. THIS PROCEDURE TEMPORARILY REMEDIES THE PROBLEM.

NHTSA complaint 562941 · 2004 vehicle

Complaints are voluntarily submitted to the NHTSA Office of Defects Investigation and are not verified by NHTSA; they represent owner-reported problems, not proven defects. Counts can be useful as a relative quality signal across comparable tires or vehicles.

Frequently asked questions

What size tires fit a 2005 Cadillac SRX?
The OEM tire size for the 2005 Cadillac SRX is 235/60R18 mounted on R18 wheels.. Trim levels and option packages can shift the original fitment; confirm against your specific vehicle's driver-door placard before purchase.
What is the bolt pattern of a 2005 Cadillac SRX?
The 2005 Cadillac SRX has a 6x115 bolt pattern with a 70.3 mm center bore and M12x1.5 wheel studs. Bolt pattern is consistent across the model generation; confirm against your existing wheel before fitting aftermarket wheels or adapters.
Can I run a different tire size on my 2005 Cadillac SRX?
Plus-sizing (larger rim, lower aspect) is possible within ±3% of the OEM overall diameter per the ETRTO safe-fit standard. The Compatible alternative sizes table on this page lists every safe option for the OEM size. Always confirm with the manufacturer or a qualified tire shop before deviating from the placard.
Where can I buy tires for my 2005 Cadillac SRX?
Online tire retailers in our affiliate network carry every size documented for this vehicle. Use the Shop online buttons above to compare prices across them; variance of $20–$40 per tire is common between merchants. The <a href="/tools/tire-install-cost-calculator/">install cost calculator</a> estimates the out-the-door including mount, balance, TPMS, and disposal by state.
What is the recommended tire pressure for the 2005 Cadillac SRX?
The cold-inflation pressure is printed on the driver-door placard of your specific vehicle and varies by trim, tire size, and loaded vs unloaded condition. Typical OEM front and rear pressures fall between 30 and 36 psi for passenger trims and 32–40 psi for SUV/truck variants, but the placard is the authoritative source.
Can I fit winter tires in a different size on my 2005 Cadillac SRX?
Yes; the standard winter-tire fitment pattern is one width step narrower than OEM (e.g. 225 → 215) with the aspect ratio bumped up to preserve overall diameter. Narrower tires increase contact pressure on snow for better traction. The Compatible alternative sizes table includes any winter-friendly options that fall within ±3% OD for this vehicle.
How often should I rotate the tires on my 2005 Cadillac SRX?
Every 5,000–7,500 miles is the typical OEM recommendation for passenger vehicles. AWD vehicles and high-torque trucks benefit from the shorter interval. Documented rotation history is also a tire-warranty prerequisite; most manufacturer treadwear claims require rotation receipts at the warranty inspection.

For broader tire questions; replacement timing, UTQG, EV-specific tires, winter swaps; see the tire FAQ.

Sources for this page

  1. Vehicle owner's manual tire & wheel placard; door-jamb placard on the Cadillac SRX is the authoritative source for OEM tire size, load index, and cold-inflation pressure for your specific trim.
  2. NHTSA SaferCar; recall lookup for the 2005 Cadillac SRX.
  3. ETRTO 2024 Standards Manual §2.3; overall-diameter math used for the alternative-size verdicts above.
  4. Tire & Rim Association 2025 Yearbook; load-index to maximum-load reference.

Last verified 2026-10-07.