I need help with wheel selection

[ofnaman]

After mowing it over about ditching the 8 lug, I decided that's what I'm going to do. I will be putting in 5 on 5 bolt pattern axle's with 5" bolt circle. My question is simple: 15 x 6's front's with 15 x 10's rear, or 18 x 8's front and 18's or 20's x 10's rear's. I can get the 18's and 20's tire's for free (I am a tech at a Cadillac and Land Rover dealer and those owners throw away great tires), but I don't mind buying the 15's either (I can get them cheap). What do you think? Thanks

[whatnow123]

Here's my suggestion after pondering my wheels for what seems like forever. 18 x 8, 4 inch backspacing, and 18 x10 rears with 4.5 backspacing if you have the narrow 67-70 rear, 5 to 5.25 if you have the wider rear. I think the 20's on the rear look funny.

[bent]

I completely agree with whatnow123 20's on these old trucks do look a bit funny and if you can get 18s for free that is a plus tires now days all though cheap can add up so yeah id say 18s

[ofnaman]

I think the staggered wheel size is a little odd looking as well, but I have seen some 18's and 20's that look o.k. I guess it depends on the wheel.