Question about 69 C30 wheels and options

[hanly2]

I need to get some tires on my truck and I was looking at some options. I saw a post on a old thread that I can use 19.5 8 lug wheels and they will fit. I found some but they have 225/70-19.5 tires on them. The tires I have now are 215's so I want to make sure that they will not rub. Ok wait I just had a dumb realization, if they rubbed they wouldn't be on those wheels would they? Can someone confirm anyway. Also how do I know if I have the split rims? Here is a picture of mine and a picture of the ones I found for sale. Do they have to be old ones and how can I tell?

[70cst]

Here is a bump for you

[hugger6933]

The split wheels will have a ring around the wheel where one lip should be. Meaning if the wheel ring were missing there would be no edge for the tire bead to seat on/against. I have seen in other post on here that guys have used 19.5's on their trucks off of some P30's, I wanted to try that on mine as my 19.5 wheels has 7 new tires[who buys a new spare?] but my P30 was 5/10 lug set up. I don't know if the bigger wheels would have split rims you may want to look for some dually wheels they fit up to like 2000 or so according to Hollander[the salvages industries leading interchange source] but the lug bolts are bigger after like 72 or sometime in that range. Ford wheels will also fit but have a lining peg that has to be ground down or removed. Good luck with yours. Jim

[hugger6933]

Go to the dually picture thread you can learn a lot looking through it . It was close to the top just a day or two ago. Jim

[hanly2]

So I cant tell if I have split rims unless the tires are off?

[hugger6933]

No, I'm not conveying properly the right way to tell you. Yes you can tell if the wheel is a lock wheel or split rim one side will have a part of the wheel[the part the beads rest against]with a ring that is separate from the wheel and it will have a slot in it. Think of it like a big snap ring, that goes on to the edge of the wheel. Look for the groove[split] in the wheel bead that will tell you if it is a split wheel. On my 71 C-30 it has 3 regular and three split wheels So I still need to find 3 regular to make mine right.Where did you come across the 8 lug P 30 wheels and what do they cost? I may try to look for a set myself.also just looked back at your pic, look for the split on the inside I think you will find it there. Jim

[hanly2]

I didn't find any p30 wheels yet. Those wheels up there I found out came off a ford 450 super duty so I don't think they will fit. I would have had a sweet deal if they would.

[cooperhw]

Originally Posted by hanly2

I didn't find any p30 wheels yet. Those wheels up there I found out came off a ford 450 super duty so I don't think they will fit. I would have had a sweet deal if they would.

I think you are right in that the newer 2002 and up Ferd wheels will not fit. They are 8 X 170mm I believe and we need 8 X 6.5 inch. I am also looking for wheels for my 68 dually.

[slomotion]

Originally Posted by cooperhw

............I am also looking for wheels for my 68 dually.

I'm sure you already know, but if you haven't done it, you may have to go to a 9/16's lug and captured washer lug nuts with other than stock wheels.....actually, it's not a bad idea with new wheels anyway.

[Aruba1]

You said the tires that you have now are 215s but the ones in the pictures are 245/70R16 or are you saying that you have 215s in 19.5 sizes? I think 19.5s only comes in 225 and 245 sizes but I could be wrong. I did a conversion on my C20 to accept front suspension and rear differential of a 1989 C3500. And I also located some P-30 wheels. The 225/70/19.5 fit nice and gives the truck a nice stance... but... I hate how it drives. If I had to do it all over again I would go with military 16 tires and forget about 19.5s. Of course my 19.5s are used tires so I you go with new one they may run much better.

[cooperhw]

Originally Posted by slomotion

I'm sure you already know, but if you haven't done it, you may have to go to a 9/16's lug and captured washer lug nuts with other than stock wheels.....actually, it's not a bad idea with new wheels anyway.

I am not sure, I will have to check. I swapped out my dually rearend with a 79 14 bolt full floater unit for better gearing.

[slomotion]

Originally Posted by cooperhw

I am not sure, I will have to check. I swapped out my dually rearend with a 79 14 bolt full floater unit for better gearing.

Most likely the 79 rear end is 9/16's. Are your front hubs stock? 1/2"?

[hugger6933]

Did they go to the bigger [9/16] studs in 73? Reason I am asking even though I am supposed to have my 71 C30 sold I found a line on a 72 C30 today that may be on the next list for projects. There was a pretty nice 68 in the FT. Smith [AR]section of the auto parts section of C-list but I don't know the link trick.[I barely can just drive what I have in front much of me much less get fancy]It was $2500 and it was /is a camper type rig with CST trim level 327-4 speed. The ad said very little rust. Jim

[slomotion]

I'm sorry, I can't help you there. I checked two resources and one is dead wrong, (the very first line had '68 C20's with a 9/16 lug. When I got mine it was bone stock, with two piece wheels - [all six] - and 1/2" lugs.) The other was too vague to be helpful. (From 67 up into the '80's all it said was 1/2" or 9/16".)
Somebody that can tell us will jump in here pretty soon......

[cooperhw]

Originally Posted by slomotion

Most likely the 79 rear end is 9/16's. Are your front hubs stock? 1/2"?

No, I swapped the front crossmember as well as the rear end. Disc brake 1 ton better gears..

[hanly2]

Those 245 tires were just rollers on the outside to get the truck home, you can't fit 2 side by side.