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Old 09-25-2024, 05:58 PM   #1
kna4977
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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?
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Old 09-26-2024, 01:29 PM   #2
1970cstblazer
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Lightbulb 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
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1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD 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..

1972 Cheyenne Super 20 2WD, DK 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, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2...

2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels
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Old 09-26-2024, 05:43 PM   #3
1970cstblazer
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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/
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1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD 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..

1972 Cheyenne Super 20 2WD, DK 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, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2...

2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels
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Old 09-26-2024, 05:49 PM   #4
kna4977
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Re: H78-15-b on-off road tires

Quote:
Originally Posted by 1970cstblazer View Post
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?
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Old 09-26-2024, 06:36 PM   #5
1970cstblazer
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Arrow 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.
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1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD 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..

1972 Cheyenne Super 20 2WD, DK 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, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2...

2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels
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