by Charlie » 26 Nov 2001 19:45
I have no clue either, but an old Year one catalog lists the following original sizes and
their equivalents:
6.85-14 P185-75R14
7.35-14 P195-75R14
7.75-14 P205-75R14
D70-14 P205-70R14
E70-14 P205-70R14
F70-14 P215-70R14
D78-14 P195-75R14
E78-14 P205-75R14
E60-15 P215-60R15
F60-15 P225-60R15
G60-15 P235-60R15
F70-15 P215-70R15