72spoke wire wheels on TR4A

["Russell Messersmith" <krus@worldnet.att.net>]

I am thinking about putting a set of 72 spoke wheels on my TR4A.  These
wheels are 5.5 inches wide as compared to 4.5 inches wide for the 60 spokes
that are now on the car.  What size tire should I use on these wheels?  I
have a new set of I have a new set of  165R15 86T on the 60 spoke wheels.
Can I use these on the 72 spoke wheels?  I have a like new set of 72 spoke
wheels that I want to use on the TR4A as the 60 spokes are in bad shape. 
TIA

Russ Messersmith
1967 TR4A
1972 TR6