This is the Hobby Products International (HPI) #4520 Low Profile
Super Radial Tires Standard Width for Touring Sedans.

FEATURES: Radial tread and soft compound
Fits Touring type cars from Kyosho, Tamiya, Yokomo
and the HPI RS4 using standard width wheels
Standard touring car width

INCLUDES: 2 tires
2 grey foam insert strips


SPECIFICATIONS: 2 1/2" (64mm) outside diameter
1 15/16" (49mm) inside diameter
1 1/16" (27mm) wide