These Drag Slicks equal a scale 14x32-15 tire. The tread width equals 14" and the overall width, with sidewalls equals 18".
To determine if these will fit your needs, here are the actual dimension:
Width inc. Sidewall = .75"
Tread Width = .60"
Diameter = 1.31"
Wheel Opening =.63"
Dimensionally, this is the most accurate tire available replicating a generic slick commonly used in the 1960-1980s for Pro Stock and other classes.
The tire ID is designed to work with earlier 1/25th scale wheels.
Here are side by side comparisons of four drag slicks.
From left to right - Futurattraction 14x32, Futurattraction 16x33, Comp Resin Pro Stock and Comp Resin F/C-TF
One pair, cast in soft, black rubber, 1/25 scale.