GMC K2500 Spare Tire Sizes

The GMC K2500 has used a 8x6.5" bolt pattern for all models from 1979 to 1987 along with tire diameters ranging from 28.6" to 31.8" 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 GMC K2500 years and options. In this case, using a non-temporary Full-Size tire as your spare, is the recommendation for all applications.

YearMakeModelBolt
Pattern
Tire
Diameters
Recommended
Spare
1987GMCK2500
8-165
30.4-31.7"
Full Size
1986GMCK2500
8-165
30.4-31.7"
Full Size
1985GMCK2500
8-165
30.4-31.7"
Full Size
1984GMCK2500
8-165
30.4-31.7"
Full Size
1983GMCK2500
8-165
30.4-31.7"
Full Size
1982GMCK2500
8-165
30.4-31.7"
Full Size
1981GMCK2500
8-165
29.5-31.8"
Full Size
1980GMCK2500
8-165
29.5-31.8"
Full Size
1979GMCK2500
8-165
28.6-31.8"
Full Size
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