wheel fitment

[John Pasinski]

I have an opportunity to buy two new 245/75R16.5 tires mounted on rims for $150.00. The confusion for me is this. I have a '72 1 ton (my rims & tires are 16"). The new wheels are off a '64 GMC 1 ton. The stud size & spacing are identical, but the hub hole is about 1/8" larger than mine. In other words, there's a 1/8" gap around the hub when I install them. Will this adversly affect the balance or safety while driving especially loaded? I know this all has to do with hub centric vs. lug centric but I don't understand that at this point either. Thanks................