Honda Civic Wagon 4WD 1990 Owner's Manual page 93

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Tires (cont'd)
Mixing radial and bias ply tires or different sized tires can
adversely affect your car's handling, which could lead to loss of
control and possible injury.
Additional 4 W D Tire Information
Unevenly worn tires, or different sized tires, can cause the 4WD
mechanism to engage abnormally, which may eventually damage
the transmission. Therefore, observe the following precautions
carefully:
Rotate the tires at least every 7,500 miles (12,000 km).
Replace worn tires in sets of four.
If replacement of all four tires is not practical (because of damage
to an individual tire, for example), always replace with the same
size, brand and type as those currently on the car.