Tire size? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

PJsthnam · 12-05-2009, 09:32 PM

Not sure where to post this but.....anyone know what is the stock tire size for 72 GMC 3/4 ton? Or where I might find this info?

Longhorn Man · 12-05-2009, 10:05 PM

I think it was 7.50 16.5

PJsthnam · 12-05-2009, 10:15 PM

Guess I shoulda asked...Tire Height? I think it was 29"

factorystock · 12-06-2009, 12:49 AM

The standard tire was 8.75-16.5. Most common optional sizes were 9.50-16.5 and 7.50-16. The 16.5 wheel was a 1 piece , the 16 wheel was a 2 piece on 72 3/4 tons. 29" about right for 9.50-16.5 and around 30" for 7.50-16.

**Stocker** · 12-06-2009, 02:21 AM

Quote:

Originally Posted by factorystock

The standard tire was 8.75-16.5. Most common optional sizes were 9.50-16.5 and 7.50-16. The 16.5 wheel was a 1 piece , the 16 wheel was a 2 piece on 72 3/4 tons. 29" about right for 9.50-16.5 and around 30" for 7.50-16.

Can't speak to the 16.5" stuff, but this info on the 16s is accurate based on what came on my '72 K20 -- other than I believe typical 7.50-16s were closer to 31.5" tall. The old 8PR Armstrong Norsemans I bought were listed as 32.3".

Lugnut64052 · 12-06-2009, 05:16 PM

My 72 Custom Camper came with 16's too, which I'm thinking was an option. Original customer ordered it that way. It's on the SPID.

(slight thread hijack) Question for you tire guys--- What's the closest modern radial tire size to a 7.50-16? And how much wider of a tire can I crowd onto my stock rims without getting into trouble?

**Stocker** · 12-06-2009, 09:22 PM

Quote:

Originally Posted by Lugnut64052

My 72 Custom Camper came with 16's too, which I'm thinking was an option. Original customer ordered it that way. It's on the SPID.

(slight thread hijack) Question for you tire guys--- What's the closest modern radial tire size to a 7.50-16? And how much wider of a tire can I crowd onto my stock rims without getting into trouble?

235/85-16 (6" - 7" rim) is virtually the same size.

265/75-16 is same height and will go on a 7" - 8" rim, or a 275/70-16.

I probably would not go any larger on a stock wheel.

12-05-2009, 09:32 PM	#1
PJsthnam Registered User Join Date: Nov 2009 Location: Sacramento, Ca. Posts: 66	Tire size? Not sure where to post this but.....anyone know what is the stock tire size for 72 GMC 3/4 ton? Or where I might find this info? __________________ 72 GMC Custom Camper 84 Shovelhead

12-05-2009, 10:05 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Tire size? I think it was 7.50 16.5

12-05-2009, 10:15 PM	#3
PJsthnam Registered User Join Date: Nov 2009 Location: Sacramento, Ca. Posts: 66	Re: Tire size? Guess I shoulda asked...Tire Height? I think it was 29" __________________ 72 GMC Custom Camper 84 Shovelhead

12-06-2009, 12:49 AM	#4
factorystock Registered User Join Date: Feb 2007 Location: west coast Posts: 3,396	Re: Tire size? The standard tire was 8.75-16.5. Most common optional sizes were 9.50-16.5 and 7.50-16. The 16.5 wheel was a 1 piece , the 16 wheel was a 2 piece on 72 3/4 tons. 29" about right for 9.50-16.5 and around 30" for 7.50-16.

12-06-2009, 05:16 PM	#6
Lugnut64052 Middle-aged Curmudgeon Join Date: Jun 2008 Location: Independence, MO Posts: 753	Re: Tire size? My 72 Custom Camper came with 16's too, which I'm thinking was an option. Original customer ordered it that way. It's on the SPID. (slight thread hijack) Question for you tire guys--- What's the closest modern radial tire size to a 7.50-16? And how much wider of a tire can I crowd onto my stock rims without getting into trouble? __________________ Bret Check out the site's Truck Tech FAQ. Be a site supporter. My more-or-less pathetic build thread. Board members I've met: ------------------------------ Longhorn Man Dieselwrencher jholley big mike71



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