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#1 |
Registered User
Join Date: Apr 2007
Location: la
Posts: 369
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What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
Hello everyone,
I had some time to take off the steelies and they are stamped GY R5516 TS and then a uniqe mark next to that. I have a buddy who is giving me a good deal on some hardly used 7.5.16 LT Bias Ply's but I'm wondering if they'll fit this rim? What is everyones thoughts on what these rims were originally to? Does the 55 mean 5.5"? Thanks for the help, Nick |
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#2 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
Those rims were original to your truck , They are split rims and "DANGEROUS " when removing and replacing tires because the ring can dislodge from the wheel . No tire shops will touch them .Time to buy some new rims .
![]() https://www.youtube.com/watch?v=U31d7ownTlc
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#3 | |
Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,469
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
Quote:
The RH-5 are widowmakers and large truck shops still do them Around 9.43 they have a nice cutaway view of a split rim https://youtu.be/BuFaNv9y29c
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Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. Last edited by 72c20customcamper; 03-06-2023 at 08:31 PM. |
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#4 | |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,623
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
Quote:
You are correct that truck shops will work on them -- but in my experience, typical run-of-the-mill tire shops will refuse. As with anything, there may be exceptions.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#5 | |
Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,469
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
Quote:
__________________
Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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#6 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,387
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
I worked in a gas station for 6+ years. I sold/repaired/changed many of the old split rim tires, up to 20" on some of the fleet trucks we serviced. You just have to be really careful and stand well away when inflating. I never had one separate. That was over 40 years ago, though. Those things were common as dirt back then.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#7 | |
Registered User
Join Date: Apr 2007
Location: la
Posts: 369
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
Quote:
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#8 |
Registered User
Join Date: Apr 2007
Location: la
Posts: 369
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
I just had them removed with no issues and they said it wouldn’t be a problem to mount and balance them? They did say not all shops know how to do so though.
The rings and rims are all in great shape with no bends or cracks. Do I really need to get new rims??? |
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#9 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
I'd buy new rims and tires but it's your truck . How old are the tires your looking at using ? With split rim wheels you'll need liners and tubes If you have a flat you'll have to find someone to change the tube and Most shops won't work on them , The best thing you can do for your truck is buy new rims and tires , It's safer/ easier and you'll have less issues down the road .
![]() I'd scrap them , They're just not worth the hassle .
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#10 | |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
Quote:
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#11 |
Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,469
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
We used to use a chain snaked through the hup around the rim tire with about three loops and used a chain shortener to keep it tight . If we were at my uncle home he would use the front bucket to restrain the rim so nothing would fly when changing a tire on one of tractors or field trailers
Just don’t let this guy do it
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Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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#12 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,623
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
As long as you understand the caveats, they will still work. Grumpy is right, most tire shops won't touch them, probably due to the very real danger and associated insurance liability. You're probably right about 5.5" wide.... I remember them as no wider than 6". If you decide to use them, they will require tubes and liners.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#13 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,623
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
It's been years since I first posted about this, but I guess one more time won't hurt.
![]() When I bought my K20 in 1977, the dealer had installed a new set of 7.50-16(D) highway tires on the split rims (oops, locking ring wheels -- old habits are hard to break). Highway tires on a 4x4? I drove it straight to a tire shop to trade for Armstrong Rhino mud & snows. One wheel just would not balance. The guy got frustrated, finally gave up and removed the tire, only to find the brand-new liner still folded up inside the tire. He put it back together, finished the job with a successful balance, thanked me for my business, and asked me to please not come back as long as I had those wheels. If he is still alive, I bet he still remembers....
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#14 |
Registered User
Join Date: Apr 2007
Location: la
Posts: 369
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
Thank you everyone. Not trying to devalue anyone’s opinion, just trying to gain knowledge on my truck and what I have. This dialogue is very helpful.
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#15 |
BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 19,863
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
Just learned something today. When I was a kid we called these lock ring wheels. I never had them on anything, but dont remember them coming up as dangerous.
Years ago when I joined the board they were talking about how dangerous split rims were and at that time I thought they looked like what I called lock rings wheels. So ever since then Ive called them all split rims thinking that they were one and the same. Today I find out they are two different types of wheels. I changed a lot of flats when I was a kid working at the Shell station in the 70's. Dont remember ever working on either kinds of these wheels.
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#16 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,623
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
They don't have an airtight seal, so tubes are a requirement. Also liners which fit around the wheel to prevent the wheel surface from destroying the tube.
EDIT: I mis-read your question. I don't see any reason not to run tubeless tires -- as long as you use a tube and liner.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#17 |
Registered User
Join Date: Feb 2007
Location: west coast
Posts: 3,370
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
This rim is not originally off a 60's GM pickup, it must have came off a generic 50's-60's trailer. Many manufactures of trailers back then used "commercial type" rims for durability. Another drawback of using this rim is, because it is not a period correct GM pickup wheel, it will not accept the period correct '68 hubcap.
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#18 |
68 C10 Longbed
![]() Join Date: Sep 2006
Location: Naples, Florida
Posts: 520
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
I remember back in the 70’s they would put split rims in this cage fixture when they would inflate them just in case they dislodged and the ring came flying off.
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#19 |
Registered User
Join Date: Feb 2007
Location: west coast
Posts: 3,370
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
They need to be assembled by a professional who knows what there doing. Yeah, even his service truck has "commercial" lock ring wheels. Note wheel is not a "drop center" type, these wheels are "flat base" type.
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#20 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,623
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
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__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#21 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,387
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Re: What are these rims off my 68 and will 7.5x16' Bias Ply Fit Them
That looks a lot like my eldest son, though he wouldn't be caught dead in a t-shirt with a hammer & sickle on it, since he's a Tech SGT in the USAF.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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