Tires

[pendulumx]

What were the original tires on a 1972 MC?  Size too.  

[jft69z]

Not sure about brand, but sizes were:

Base - G78-15 bias ply tire

Optional -G70-15 bias ply (available with 15x7 wheels, rally wheels, or custom wheel covers - per ordering guide)

 

Something that may interest you & provide you with more facts & figures than you'll ever need, look here at the GM Heritage info packages:

https://www.firstgenmc.com/forums/index.php?/resources/gmheritagearchiveinfo/

and for the '72 itself:

https://drive.google.com/file/d/1boaPFYXXpLbZX8Vvj2ZRn6fVbDFtFS1O/view

 

[DragCat]

Just saying you may want to go with an updated radial tire, better ride ..

[Dtret]

There is a ton of information on tires on this site. Do some browsing even things you didn’t think to ask will be there.