Pontiac Fiero Spare Tire Sizes

The Pontiac Fiero has used a 5x100mm bolt pattern for all models from 1984 to 1988 along with tire diameters ranging from 24.2" to 25.2" tall. Using a temporary spare tire with a diameter close to the standard tire has many benefits, especially for modern vehicle applications. Tire diameter as well as wheel diameter clearance have been taken into account for the specific Pontiac Fiero years and options. In this case, 185/65R15 and 125/80R17 spare tire sizes are used to avoid vehicle components while closely matching the original tire size diameters.

YearMakeModelBolt
Pattern
Tire
Diameters
Recommended
Spare
1988PontiacFiero
5-100
24.7-25.2"
125/80R17 | 24.9"
1987PontiacFiero
5-100
24.7-25.2"
125/80R17 | 24.9"
1986PontiacFiero
5-100
24.7-25.2"
125/80R17 | 24.9"
1985PontiacFiero
5-100
24.2-24.7"
185/65R15 | 24.5"
1984PontiacFiero
5-100
24.2-24.7"
185/65R15 | 24.5"
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