1991 Oldsmobile 88 tire sizes & fitment
Approved tire and wheel sizes for the 1991 Oldsmobile 88, sourced from manufacturer fitment data and refreshed monthly.
Approved fitments
| Tire size | Rim size | PCD (bolt pattern) | Offset | Load index | Speed rating |
|---|---|---|---|---|---|
| 205/75R14 OEM | R14 | 5x115 | N/A | N/A | N/A |
| 205/70R15 OEM | R15 | 5x115 | N/A | N/A | N/A |
| 215/65R15 OEM | R15 | 5x115 | N/A | N/A | N/A |
1991 Oldsmobile 88 wheel bolt pattern & specs
| Bolt pattern (PCD) | 5x115 |
|---|---|
| Wheel thread / lug size | M12x1.5 |
| Center bore | 70.3 mm |
| Source | adaptitusa-reference |
Best by use case
Four tires, four jobs
See the best tires for the Oldsmobile 88, ranked by category →
Tire recalls & safety complaints for the Oldsmobile 88 →
Compatible alternative sizes for 205/75R14
Sizes within the ETRTO ±3% overall-diameter safe-fit tolerance. Each row links to the size's own page.
| Alternative size | %Δ OD | Category | Verdict |
|---|---|---|---|
235/60R15 |
-0.02% | plus 1 | Safe |
215/60R16 |
0.20% | plus 2 | Safe |
195/85R13 |
-0.21% | winter narrower | Safe |
235/55R16 |
0.27% | plus 2 | Safe |
235/65R14 |
-0.30% | wider | Safe |
For the full list of alternatives with comfort/handling impact, see 205/75R14 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 205/75R14 and verdict using the ETRTO ±3% rule.
Common upgrade paths
- Plus-1: 235/60R15; one rim size up, -0.02% OD change. Sharper steering, mild ride penalty, modest cost premium.
- Plus-2: 215/60R16; two rim sizes up, 0.20% OD change. Noticeable ride penalty, higher pothole risk, meaningful tire-cost premium.
Use the plus-size calculator to evaluate any rim step against the OEM size.
How to choose tires for the 1991 oldsmobile 88 base-model
The 1991 Oldsmobile 88 Base-Model ships from the factory on 205/75R14 tires mounted on R14 wheels. 3 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 Oldsmobile 88 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 1991 Oldsmobile 88 Base-Model 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 1991 Oldsmobile 88 Base-Model, 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 1991 oldsmobile 88
Top issue category: Tires (General)
Most reported: Tires (General) (13) · Tread / Belt (12) · Sidewall (2) · Spare Tire (1)
Reported across: 1979 – 1998 (12 years)
What owners described
Tread or belt separation appears in 27% of these reports; about 2.0× as often as across all tire complaints. Percentages are shares of the 11 reports covering every model year of the Oldsmobile 88 that include a written account; a single report can describe more than one problem, so they do not total 100%.
| Reported problem | This subject | All tire complaints | Relative |
|---|---|---|---|
| Tread or belt separation | 27% | 13% | 2.0× |
| Loss of control, rollover or collision | 18% | 8% | 2.2× |
| Blowout or sudden deflation | 9% | 20% | 0.5× |
| Bubble or bulge in the tire | 9% | 6% | 1.5× |
Mileage at failure
6 of these reports state an odometer reading. The middle report is at 57,000 miles, with 8 in 10 falling between 17,000 and 190,000 miles.
In owners' own words
Verbatim excerpts from complaints filed with NHTSA about Oldsmobile 88. Reports are published by NHTSA as filed and are lightly cleaned here only to remove intake codes.
I HAVE BEEN A MECHANIC FOR 15 YEARS AND HAVE HAD A LOT OF PROBLEMS WITH SEVERAL BRANDS OF FIRESTONE TIRES. ABOUT 10 YEARS AGO SEVERAL FIRESTONE TIRES DEVELOPED LUMPS IN THE TREAD AND HAD TO BE REPLACED. LAST YEAR, I HAD TWO TIGERPAW TIRES SLING THE TREAD FROM THE TIRE AND SHRED AT ABOUT 70 MPH. I HAVE USED A LOT OF TIRES AND THESE ARE THE ONLY TWO THAT EVER SLUNG THE TREAD AND THEN SHREDDED. THEY WERE NOT EVEN INSTALLED ON THE CAR AT THE SAME TIME. THESE TWO INCIDENTS WERE ABOUT 6 MONTHS APART. I STOPPED USING FIRESTONE TIRES COMPLETELY AFTER THAT. THERE ARE TROUBLES WITH FIRESTONE TIRES OTHER THAN THE ONES CURRENTLY BEING RECALLED ON SUVS. THIS NEEDS TO BE CHECKED INTO. *AK( DOT NUMBER: TIRE SIZE: 225/75R15 )
TIRE DEVELOPS A SEPARATION, THE TWO REAR TIRES DEVELOPED SEPARATIONS AFTER 19K MILES. TT GENERAL AMERTECH ST TIRES, P205/70R15, DOT A3M0FFA332, CONSUMER STATES THE TWO REAR TIRES EXPERIENCED TREAD SEPARATION AT 17000 MILES, THE TWO REPLACED TIRES EXPERIENCED TREAD SEPARATION AT 20000 MILES, POSSIBLE SEPARATION CAUSED BY DESERT HEAT. *SLC
MICHELIN, RADIAL, DOTB9CTCRPE-299; WHILE TRAVELING AT 55MPH CONSUMER HEARD A NOISE, THEN LOST CONTROL OF VEHICLE, WENT ACROSS A LANE AND HIT GUARD A RAIL. *AK WHEN THE VEHICLE CROSSED THE LANE, IT WAS STRUCK BY ANOTHER VEHICLE ON DRIVER SIDE AND THE TIRE BLEW NEAR WHITE SIDE WALL.
THE CONTACT OWNS A 1998 OLDSMOBILE 88 LS. WHEN ATTEMPTING TO CHANGE A FLAT TIRE THE PLASTIC NUT THAT SECURED THE SPARE TIRE WOULD NOT RETRACT. THE NUT WAS BROKEN WITH A HAMMER SO THAT THE TIRE COULD BE CHANGED. THE CURRENT MILEAGE WAS UNKNOWN BECAUSE HE NO LONGER OWNS THE VEHICLE. THE FAILURE MILEAGE WAS 190,000. UPDATED 09/12/07
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 1991 Oldsmobile 88?
What is the bolt pattern of a 1991 Oldsmobile 88?
Can I run a different tire size on my 1991 Oldsmobile 88?
Where can I buy tires for my 1991 Oldsmobile 88?
What is the recommended tire pressure for the 1991 Oldsmobile 88?
Can I fit winter tires in a different size on my 1991 Oldsmobile 88?
How often should I rotate the tires on my 1991 Oldsmobile 88?
For broader tire questions; replacement timing, UTQG, EV-specific tires, winter swaps; see the tire FAQ.
Sources for this page
- Vehicle owner's manual tire & wheel placard; door-jamb placard on the Oldsmobile 88 is the authoritative source for OEM tire size, load index, and cold-inflation pressure for your specific trim.
- NHTSA SaferCar; recall lookup for the 1991 Oldsmobile 88.
- ETRTO 2024 Standards Manual §2.3; overall-diameter math used for the alternative-size verdicts above.
- Tire & Rim Association 2025 Yearbook; load-index to maximum-load reference.
Last verified 2026-09-02.