GM Truck RPO characters - (Regular Production Option) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**71CHEVYSHORTBED402** · 03-28-2023, 10:39 PM

Trying to discover what size my stock 1971 c10 wheels are (anyone?) and came across this.

**jocko** · 03-29-2023, 12:32 AM

Tony, I think 15x6 would have been standard on your truck per the 71 brochure specs.

**71CHEVYSHORTBED402** · 03-30-2023, 12:51 AM

Quote:

Originally Posted by jocko

Tony, I think 15x6 would have been standard on your truck per the 71 brochure specs.

I think you're probably right, thank you. The wheels per my build sheet are AKAK2, but I've found no information for that. PV5 (H78-15/B) tires though, your image supports it. Oddly the RPO list in the OP doesn't include PV5.

**special-K** · 03-30-2023, 07:09 AM

I don't know anything about RPO mumbo jumbo for 15" wheels. I only know only 15 x 6s were offered... in 15". The other diameter wheels were never an option, they came along with the tire option that required them. On a 20/30 series Chevy, you got 16.5 x 8.25s when the truck shows 10.00 flotation tire option. The wheels were not shown as the option

Keith Seymore · 03-30-2023, 10:51 AM

15 x 6.

https://www.gm.com/content/dam/compa...olet-Truck.pdf

K

**71CHEVYSHORTBED402** · 03-31-2023, 01:25 AM

Thanks for the information. Makes it easier to buy tires

Keith Seymore · 03-31-2023, 10:53 AM

You are welcome.

You are not going to be able to get that level of detail through the RPO.

For example, for rally wheels the RPO is N67, but that covers 15x6.5, 15x7 and 15x8, depending on the vehicle (van vs pickup) and tire size used. Same RPO, different wheel widths selected by the engineering release charts.

K

03-28-2023, 10:39 PM	#1
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,385	GM Truck RPO characters - (Regular Production Option) Trying to discover what size my stock 1971 c10 wheels are (anyone?) and came across this. Attached Images __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

03-29-2023, 12:32 AM	#2
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,994	Re: GM Truck RPO characters - (Regular Production Option) Tony, I think 15x6 would have been standard on your truck per the 71 brochure specs. Attached Images

03-30-2023, 07:09 AM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: GM Truck RPO characters - (Regular Production Option) I don't know anything about RPO mumbo jumbo for 15" wheels. I only know only 15 x 6s were offered... in 15". The other diameter wheels were never an option, they came along with the tire option that required them. On a 20/30 series Chevy, you got 16.5 x 8.25s when the truck shows 10.00 flotation tire option. The wheels were not shown as the option __________________ "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 ~

03-30-2023, 10:51 AM	#5
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,285	Re: GM Truck RPO characters - (Regular Production Option) 15 x 6. https://www.gm.com/content/dam/compa...olet-Truck.pdf K Attached Images __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ Last edited by Keith Seymore; 03-30-2023 at 10:57 AM.

03-31-2023, 01:25 AM	#6
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,385	Re: GM Truck RPO characters - (Regular Production Option) Thanks for the information. Makes it easier to buy tires __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

03-31-2023, 10:53 AM	#7
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,285	Re: GM Truck RPO characters - (Regular Production Option) You are welcome. You are not going to be able to get that level of detail through the RPO. For example, for rally wheels the RPO is N67, but that covers 15x6.5, 15x7 and 15x8, depending on the vehicle (van vs pickup) and tire size used. Same RPO, different wheel widths selected by the engineering release charts. K __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/



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