H78-15-b on-off road tires - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**kna4977** · 09-25-2024, 05:58 PM

Anyone have a picture of what brand and style GM originally used for this tire? Is there anything currently available that is close in style to an original?

**1970cstblazer** · 09-26-2024, 01:29 PM

GM used Goodyear and Firestone tires often. My Blazer came with Goodyears. H78-15 ON/OFF road tires were bias ply. These are readily available, but you can substitute any 15" radial.

STA Traxion H78-15

**1970cstblazer** · 09-26-2024, 05:43 PM

Here is a vintage pic of a 1972 Blazer that was optioned with those tires..

https://bringatrailer.com/listing/19...et-blazer-111/

**kna4977** · 09-26-2024, 05:49 PM

Quote:

Originally Posted by 1970cstblazer

Here is a vintage pic of a 1972 Blazer that was optioned with those tires..

https://bringatrailer.com/listing/19...et-blazer-111/

What wheel covers does it have? Never seen them. Are those actual original tires or replacements in the correct size?

**1970cstblazer** · 09-26-2024, 06:36 PM

An assumption is the tires were the original ones since this Blazer has 12k miles currently. It was a fire dept. owned vehicle. The Blazer did not come with caps, so someone added wheel covers at some point early in its life.

09-25-2024, 05:58 PM	#1
kna4977 Senior Member Join Date: Jul 2006 Location: Midlothian TX Posts: 516	H78-15-b on-off road tires Anyone have a picture of what brand and style GM originally used for this tire? Is there anything currently available that is close in style to an original?

09-26-2024, 01:29 PM	#2
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,073	Re: H78-15-b on-off road tires GM used Goodyear and Firestone tires often. My Blazer came with Goodyears. H78-15 ON/OFF road tires were bias ply. These are readily available, but you can substitute any 15" radial. STA Traxion H78-15 __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels

09-26-2024, 05:43 PM	#3
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,073	Re: H78-15-b on-off road tires Here is a vintage pic of a 1972 Blazer that was optioned with those tires.. https://bringatrailer.com/listing/19...et-blazer-111/ __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels

09-26-2024, 06:36 PM	#5
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,073	Re: H78-15-b on-off road tires An assumption is the tires were the original ones since this Blazer has 12k miles currently. It was a fire dept. owned vehicle. The Blazer did not come with caps, so someone added wheel covers at some point early in its life. __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels



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