1991 Buick Riviera Spare Tire
The Buick Riviera, a classic American luxury car, possesses a spare tire designed as a temporary measure to allow drivers to reach a nearby service station or safe place in the event of a regular tire's failure. The spare tire that comes with this car model, often named a donut owing to its smaller size, is not designed for long-term, high-speed, or heavy-duty use. The exact size of the spare tire varies slightly depending on the model year, but generally, it's expected to be smaller than the main tires - for instance, the measurements might read something like T125/70D15, denoting width of 125mm, aspect ratio of 70%, a diameter of 15 inches. It is recommended to replace the spare tire as soon as possible and never exceed limited speed and distance mentioned in the car manual.
1991 Buick Riviera comes with 2 OEM tire size options. Select the original equipment the tire size installed on your vehicle to see all spare tires that have roughly the same tire diameter and can be used as a temporary replacement in the event of a flat tire. Remember that load carrying capacity of the spare tire must be the same or higher than the load carrying capacity of the original equipment tires in order to safely support the weight of your vehicle. Refer to vehicle owner's manual or contact Buick dealership to confirm the correct 1991 Buick Riviera spare tire size.
P205/70R15
P205/70R15 tire has a diameter of 26.3". These temporary spare tires fit the acceptable tire diameter range of 25.5" to 27.1".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/60R20from $271.36 | 26.9" | 2.3% |
| T155/70R18from $178.60 | 26.6" | 1.1% |
| T155/70D17from $175.43 | 25.6" | -2.7% |
| T135/90R17from $158.19 | 26.6" | 1.1% |
| T135/90R16from $155.20 | 25.6" | -2.7% |
| T135/70R19from $147.99 | 26.5" | 0.8% |
| T155/70R17from $139.76 | 25.6" | -2.7% |
| T135/80R18from $125.96 | 26.5" | 0.8% |
| T145/70D18from $118.97 | 26" | -1.1% |
| T115/95R17from $117.54 | 25.6" | -2.7% |
| T155/80D17from $97.90 | 26.8" | 1.9% |
| T155/90D16from $92.99 | 27" | 2.7% |
| T145/90D16from $88.99 | 26.3" | 0% |
| T145/80D17from $81.99 | 26.1" | -0.8% |
| T155/80R17 | 26.8" | 1.9% |
| T155/90R16 | 27" | 2.7% |
| T165/70D17 | 26.1" | -0.8% |
| T165/70R17 | 26.1" | -0.8% |
| T185/55D18 | 26" | -1.1% |
| T185/55R18 | 26" | -1.1% |
| T185/60D17 | 25.7" | -2.3% |
| T155/80R16 | 25.7" | -2.3% |
| T155/80D16 | 25.7" | -2.3% |
| T155/70D18 | 26.6" | 1.1% |
| T145/90R16 | 26.3" | 0% |
| T145/80R17 | 26.1" | -0.8% |
| T145/70R18 | 26" | -1.1% |
| T135/90D17 | 26.6" | 1.1% |
| T135/90D16 | 25.6" | -2.7% |
| T135/80D18 | 26.5" | 0.8% |
| T125/70R19 | 25.9" | -1.5% |
| T185/60R17 | 25.7" | -2.3% |
P215/65R15
P215/65R15 tire has a diameter of 26". These temporary spare tires fit the acceptable tire diameter range of 25.2" to 26.8".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T155/70R18from $178.60 | 26.6" | 2.3% |
| T155/70D17from $175.43 | 25.6" | -1.5% |
| T155/60R18from $164.19 | 25.3" | -2.7% |
| T135/90R17from $158.19 | 26.6" | 2.3% |
| T135/90R16from $155.20 | 25.6" | -1.5% |
| T135/70R19from $147.99 | 26.5" | 1.9% |
| T155/70R17from $139.76 | 25.6" | -1.5% |
| T135/70D18from $135.05 | 25.5" | -1.9% |
| T135/80R17from $133.66 | 25.5" | -1.9% |
| T135/70R18from $131.66 | 25.5" | -1.9% |
| T135/80R18from $125.96 | 26.5" | 1.9% |
| T145/70D18from $118.97 | 26" | 0% |
| T115/95R17from $117.54 | 25.6" | -1.5% |
| T135/80D17from $112.58 | 25.5" | -1.9% |
| T145/90D16from $88.99 | 26.3" | 1.2% |
| T145/80D17from $81.99 | 26.1" | 0.4% |
| T155/70D18 | 26.6" | 2.3% |
| T155/80D16 | 25.7" | -1.2% |
| T155/80R16 | 25.7" | -1.2% |
| T165/70D17 | 26.1" | 0.4% |
| T165/70R17 | 26.1" | 0.4% |
| T185/55D18 | 26" | 0% |
| T185/55R18 | 26" | 0% |
| T185/60D17 | 25.7" | -1.2% |
| T145/90R16 | 26.3" | 1.2% |
| T145/80R17 | 26.1" | 0.4% |
| T145/70R18 | 26" | 0% |
| T125/70R19 | 25.9" | -0.4% |
| T135/60D19 | 25.4" | -2.3% |
| T135/60R19 | 25.4" | -2.3% |
| T135/80D18 | 26.5" | 1.9% |
| T135/90D16 | 25.6" | -1.5% |
| T135/90D17 | 26.6" | 2.3% |
| T145/65D18 | 25.4" | -2.3% |
| T145/65R18 | 25.4" | -2.3% |
| T185/60R17 | 25.7" | -1.2% |
More Buick Riviera Spare Tires
All listed guides, data and/or calculations are for informational purposes only. Spare-Tires.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information. Always refer to vehicle owner's manual for the correct spare tire size configuration.