1977 OEM Tires??

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Feb 20, 2006 | 10:24 PM

Grand Sport

Thread Starter

Racer

Joined: Sep 2004

Posts: 381

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1977 OEM Tires??

Does anyone know the correct tire that came from the factory on a 1977 Corvette (white letter)?

Thanks!

Feb 20, 2006 | 10:47 PM

C3nMe

Pro

Joined: Apr 2005

Posts: 603

Likes: 2

From: Illinois, USA

GR70x15 Radials

A pick I have shows Firestone Steel Radial 500
It could have also come with Goodyear Steelgard

2986 were ordered Blackwall Radials
46227 where white letter radial tires at a $57 upcharge.

Does that help?

Brian.

Feb 20, 2006 | 11:00 PM

dgruenke

Drifting

Joined: Apr 2002

Posts: 1,716

Likes: 4

From: New Baden Illinois

GR70x15, converts to a metric size of 225/70R15.

Some of the models after 1978 also came with 255/60R15. However, if your suspension is not fresh, these may rub the fenders when turning.

Feb 21, 2006 | 12:02 AM

The Ram

Racer

Joined: Nov 2005

Posts: 310

Likes: 1

From: Glenn Heights Tx

mine came with some 255s from factory

Feb 21, 2006 | 12:22 AM

Tom73

Race Director

Joined: Apr 1999

Posts: 15,148

Likes: 477

From: NM

Quote:

Originally Posted by Grand Sport

Does anyone know the correct tire that came from the factory on a 1977 Corvette (white letter)?

Thanks!

Per the M.F. Dobbins book, the standard tire was a Goodyear Custom Steelgard and the Firestone Steel Radial 500, both in GR70x15 size.

Quote:

Originally Posted by The Ram

mine came with some 255s from factory

They weren't sized that way in '77.

Feb 21, 2006 | 12:37 AM

The Ram

Racer

Joined: Nov 2005

Posts: 310

Likes: 1

From: Glenn Heights Tx

i have an 80

Feb 21, 2006 | 05:16 AM

Grand Sport

Thread Starter

Racer

Joined: Sep 2004

Posts: 381

Likes: 2

I am looking at a super low mile 77 and just wondered if the tires were original to the car.

Firestone Steel Radial 500 seems to be the proper tire!

Thank you all!

Feb 21, 2006 | 06:09 PM

dgruenke

Drifting

Joined: Apr 2002

Posts: 1,716

Likes: 4

From: New Baden Illinois

Quote:

Originally Posted by Grand Sport

I am looking at a super low mile 77 and just wondered if the tires were original to the car.

Firestone Steel Radial 500 seems to be the proper tire!

Thank you all!

I hope that the tires are aftermarket OEM tires. If those tires are from 1977, I would be afraid to drive it home.

I still have the factory spare up under my 1976 (never been on the ground) and I can see belt pops all over it. Remember, time kills rubber just as much as miles.

If it has the factory tires, your first stop should be to get some new shoes for that thing.

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Feb 21, 2006 | 07:32 PM

Ganey

Race Director

Joined: Apr 1999

Posts: 11,520

Likes: 13

From: CORVETTE 77 385 C.I. TEXAS

One of mine separated at high speed in the 70s. The spare was used to get to a tire store & later separated completely in the spare tire holder (it should have worked for a spare!).
Some 77 info. on my website.

Feb 22, 2006 | 02:49 AM

#10

blbeck

Instructor

Joined: Jun 2003

Posts: 120

Likes: 1

From: york sc

1977 information

Grand Sport
If you have any questions about 77's you can email me at blbeck77@aol.com

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