manta tyres
OpelGT.com is the premier Opel GT Forum on the internet. Registered Users do not see the above ads.
Thanks Thanks:  0
Likes Likes:  0
Dislikes Dislikes:  0
Page 1 of 2 12 LastLast
Results 1 to 20 of 23
Like Tree6Likes

Thread: manta tyres

  1. #1
    Opeler
    Join Date
    Aug 2019
    Posts
    12
    Downloads
    0
    Uploads
    0

    manta tyres

    what tyres are you fitting to your Manta?

    do you know what was original?

  2. Remove Advertisements
    OpelGT.com
    Advertisements
     

  3. #2
    Project 1450 supporter... Site Supporter RallyBob's Avatar
    Join Date
    Mar 2002
    Location
    Spofford, NH
    Posts
    13,138
    Real Name
    Bob Legere
    Downloads
    0
    Uploads
    0
    Quote Originally Posted by Nasher View Post
    what tyres are you fitting to your Manta?

    do you know what was original?
    Original on all North American spec Mantas was 165R13 on 5” wide steel rims (1971-1974) and on 5.5” steel rims in 1975.

    In Europe the GT/E could be had with 185/70R 13 on original 5.5” steel rims, or optional 6” alloy rims.
    My Flickr photos.
    C.R.L. 9/22/69 - 12/8/99, J.M.L. 3/3/43 - 6/15/04, D.M.L. 9/19/50 - 6/23/10, E.G. Sauer 2/26/66 - 2/18/10

    '70 GT 'Bonnie', '71 Ascona 4-dr turbo - winter beater, '71 Ascona 4-dr 'Turd' - rallycar, '72 Ascona wagon - 'Red', '72 Manta - caged street car, '74 Manta Luxus - factory sunroof, '74 Manta ITB racecar, '75 Manta - racecar

  4. #3
    Opel Rallier since 1977
    Join Date
    Aug 2006
    Location
    Afton VA
    Posts
    876
    Downloads
    0
    Uploads
    0
    I have bought some Pirelli CN36's size 185/70R13 on my 1900. Considering that I ran much larger rally tires for years on a Manta rally car and then a 1900 rally car, I don't expect any issues whatsoever.

  5. Remove Advertisements
    OpelGT.com
    Advertisements
     

  6. #4
    Opeler
    Join Date
    Aug 2019
    Posts
    12
    Downloads
    0
    Uploads
    0
    the CN36 is currently the best tyre for cars of that period except possibly the Michelin XDX.

    i wondered what brand and tread they fitted originally

    Manta Rallier - have you got some pictures of your car on CN36. i bet they look great

  7. #5
    Opel Rallier since 1977
    Join Date
    Aug 2006
    Location
    Afton VA
    Posts
    876
    Downloads
    0
    Uploads
    0
    Not yet, Nasher..... painting up some wheels first. They are the 'spoke' type wheels from the Manta and SportWagon, so the painting of the silver area on the outside is taking me a while.

  8. #6
    Senior Member Timbo's Avatar
    Join Date
    Feb 2012
    Location
    Auburn, NH
    Posts
    756
    Real Name
    Tim
    Downloads
    0
    Uploads
    0
    Quote Originally Posted by Nasher View Post
    the CN36 is currently the best tyre for cars of that period except possibly the Michelin XDX.

    i wondered what brand and tread they fitted originally

    Manta Rallier - have you got some pictures of your car on CN36. i bet they look great
    My 73 Manta came with 165R13 bias-ply tires. I had them put 185/70-13 Michelin X radials. I can't remember the brand. So Opels didn't come with good tires.

  9. #7
    Project 1450 supporter... Site Supporter RallyBob's Avatar
    Join Date
    Mar 2002
    Location
    Spofford, NH
    Posts
    13,138
    Real Name
    Bob Legere
    Downloads
    0
    Uploads
    0
    Quote Originally Posted by Timbo View Post
    My 73 Manta came with 165R13 bias-ply tires.

    I see what you did there!

    If they were 165R13 then they would be radials. 165B13 would be a bias ply!

    FWIW, most of the original spare tires I’ve pulled from Mantas and Asconas have been Goodyear Polyglass tires, 165-13. Bias ply.

    Though the later cars often had radials fitted (dealer option, same size).
    My Flickr photos.
    C.R.L. 9/22/69 - 12/8/99, J.M.L. 3/3/43 - 6/15/04, D.M.L. 9/19/50 - 6/23/10, E.G. Sauer 2/26/66 - 2/18/10

    '70 GT 'Bonnie', '71 Ascona 4-dr turbo - winter beater, '71 Ascona 4-dr 'Turd' - rallycar, '72 Ascona wagon - 'Red', '72 Manta - caged street car, '74 Manta Luxus - factory sunroof, '74 Manta ITB racecar, '75 Manta - racecar

  10. #8
    Opeler Bill Hoffmann's Avatar
    Join Date
    Jul 2002
    Location
    Wilmot, WI
    Posts
    844
    Downloads
    0
    Uploads
    0
    I have several original tires from two different '75 Opels (Manta and 1900). They used Goodyear G800+S steel belted radials in 165SR13 size. Here are some photos of one. Note the Opel branded tire weight!
    Attached Images Attached Images
    Manta Rallier and dpre like this.

  11. #9
    Opeler Bill Hoffmann's Avatar
    Join Date
    Jul 2002
    Location
    Wilmot, WI
    Posts
    844
    Downloads
    0
    Uploads
    0
    A quick Google search found this:
    Attached Images Attached Images
    dpre likes this.

  12. #10
    Project 1450 supporter... Site Supporter RallyBob's Avatar
    Join Date
    Mar 2002
    Location
    Spofford, NH
    Posts
    13,138
    Real Name
    Bob Legere
    Downloads
    0
    Uploads
    0
    Quote Originally Posted by Bill Hoffmann View Post
    I have several original tires from two different '75 Opels (Manta and 1900). They used Goodyear G800+S steel belted radials in 165SR13 size. Here are some photos of one. Note the Opel branded tire weight!
    Bill, having stripped hundreds of Opels over the years, I’ve definitely noticed that OEM tire choice seemed to be a regional thing.

    Cars originally sold in New England tended to have one type, cars from the south another. The few west coast cars I’ve seen yet another.

    Must’ve been a corporate GM decision.
    My Flickr photos.
    C.R.L. 9/22/69 - 12/8/99, J.M.L. 3/3/43 - 6/15/04, D.M.L. 9/19/50 - 6/23/10, E.G. Sauer 2/26/66 - 2/18/10

    '70 GT 'Bonnie', '71 Ascona 4-dr turbo - winter beater, '71 Ascona 4-dr 'Turd' - rallycar, '72 Ascona wagon - 'Red', '72 Manta - caged street car, '74 Manta Luxus - factory sunroof, '74 Manta ITB racecar, '75 Manta - racecar

  13. #11
    RunOpel dpre's Avatar
    Join Date
    Mar 2019
    Location
    Port Orchard, WA
    Posts
    714
    Real Name
    Dan
    Downloads
    1
    Uploads
    0
    Wow that tire is in really good shape and what a neat piece of history about the tire weight.

    Keep on Opeling rubber side down and shiny side up
    Make a difference and help someone today
    Dan

  14. #12
    Senior Member Michael A. Smith's Avatar
    Join Date
    Oct 2015
    Location
    Wells, Maine
    Posts
    524
    Downloads
    0
    Uploads
    0
    I posted this on your other thread on Kadet OE tires...

    I recall from my days as a make-ready mechanic in a Buick dealership that no one manufacturer was standard. We had customers that either had a preference for one brand or another, or a bias against the brand that was on the car, and requested the tires be changed. That would send us out into the lot looking for a car with the sought-after tires and we would switch the tires (occasionally forgetting to swap the spare). This of course is illegal in today's world. This happened more often with the Buicks, but we would occasionally see it with an Opel.

    As Rally Bob noted, there were various brands but I am not sure it was strictly a regional thing. For sure, GM and the other manufacturers used multiple tire suppliers so as not to be dependent on any one supplier (especially important in the event that a supplier might be affected by a labor strike).

  15. #13
    Member
    Join Date
    Feb 2018
    Location
    Finland
    Posts
    481
    Downloads
    0
    Uploads
    0
    Quote Originally Posted by RallyBob View Post
    I see what you did there!

    If they were 165R13 then they would be radials. 165B13 would be a bias ply!

    FWIW, most of the original spare tires I’ve pulled from Mantas and Asconas have been Goodyear Polyglass tires, 165-13. Bias ply.

    Though the later cars often had radials fitted (dealer option, same size).
    165 13 bias ply tires must be an American specialty, because over here bias ply tire widths were always expressed in inches.

  16. #14
    Project 1450 supporter... Site Supporter RallyBob's Avatar
    Join Date
    Mar 2002
    Location
    Spofford, NH
    Posts
    13,138
    Real Name
    Bob Legere
    Downloads
    0
    Uploads
    0
    Quote Originally Posted by Commodåren View Post
    165 13 bias ply tires must be an American specialty, because over here bias ply tire widths were always expressed in inches.
    To add confusion to that...in America various tires were expressed in inches, in P-metric, or in letter sizes.

    So you could have, for example, 6.4-13, or 165-13, or even A78-13.
    My Flickr photos.
    C.R.L. 9/22/69 - 12/8/99, J.M.L. 3/3/43 - 6/15/04, D.M.L. 9/19/50 - 6/23/10, E.G. Sauer 2/26/66 - 2/18/10

    '70 GT 'Bonnie', '71 Ascona 4-dr turbo - winter beater, '71 Ascona 4-dr 'Turd' - rallycar, '72 Ascona wagon - 'Red', '72 Manta - caged street car, '74 Manta Luxus - factory sunroof, '74 Manta ITB racecar, '75 Manta - racecar

  17. #15
    Senior Member Michael A. Smith's Avatar
    Join Date
    Oct 2015
    Location
    Wells, Maine
    Posts
    524
    Downloads
    0
    Uploads
    0
    Quote Originally Posted by RallyBob View Post
    To add confusion to that...in America various tires were expressed in inches, in P-metric, or in letter sizes.

    So you could have, for example, 6.4-13, or 165-13, or even A78-13.
    Ahhh! Then they came out with the 60-series tires (Height = 60% of width). I replaced the original 165HR-13 tires on my 1970 GT with Goodyear A60-13 polyglass tires that looked really neat, just like real racing tires and with raised white lettering (okay, so I was young...). This alone made the car impossible to handle, especially in wet weather -- the front end just plowed ahead forever.

    I was not the only one that made this mistake. Just about every Corvette driver that I knew immediately switched to the 60-series tire and within hours they were all driving around with shredded front fenders: the tires were too wide (or the wheel wells too narrow) so that whenever the car made a turn the tires rubbed the edge of the fender at the top.

  18. #16
    Opeler Bill Hoffmann's Avatar
    Join Date
    Jul 2002
    Location
    Wilmot, WI
    Posts
    844
    Downloads
    0
    Uploads
    0
    I also ran into this. I have no doubt various tire brands were used, but while optional in '74, I believe by '75 they were supplying steel belted radials on the new 5.5" wheels as standard equipment.
    Attached Images Attached Images

  19. #17
    Senior Member Timbo's Avatar
    Join Date
    Feb 2012
    Location
    Auburn, NH
    Posts
    756
    Real Name
    Tim
    Downloads
    0
    Uploads
    0
    I found this as the spare in my 74 Manta. I would guess this is one of the original tires that got moved to the spare when the radials got mounted. Looks like a bias-ply to me.
    Attached Images Attached Images

  20. #18
    Senior Member Michael A. Smith's Avatar
    Join Date
    Oct 2015
    Location
    Wells, Maine
    Posts
    524
    Downloads
    0
    Uploads
    0
    I have in my possession the dealer advertising brochures for the 1972, '73 and '74 Opel line. The '72 brochure shows every model except the GT with whitewall tires that appear to be bias-ply, and states the whitewall to be available for all models. The GT shown is clearly wearing radial tires as I remember came standard, both from my days in the Buick dealership and the GT I purchased new in 1970. The '73 brochure shows the Manta Luxus, the GT and the Rallye with blackwall tires that appear to be radial, while the cheaper models are all shown with whitewalls that appear to be bias-ply, while there is no indication at all in the brochure as to the standard tire or options, and there is no indication as to tire size. The 1974 document tells us that bias-ply tires, 165x13, are standard, but that, as of January 1, 1974, steel belted radials would be an available option for all models.

    I purchased new in 1973, a Manta Luxus in Blue Max trim, but I forget which tires came on it. All I remember is the fight that I had with the dealer in White Plains, NY over its failure to replace the already-faded seat trim on the back seat, and the trashy quality of the dealer-installed radio. That battle went all of the way to Buick's HQ in Michigan before six separate items were corrected more than three months later.

  21. #19
    1000 Post Club kwschumm's Avatar
    Join Date
    Nov 2009
    Location
    Pacific NW
    Posts
    1,952
    Real Name
    Ken
    Downloads
    1
    Uploads
    0
    Quote Originally Posted by Timbo View Post
    I found this as the spare in my 74 Manta. I would guess this is one of the original tires that got moved to the spare when the radials got mounted. Looks like a bias-ply to me.
    Kind of looks like a radial to me with the way the tread wraps around the shoulders. Does it say bias ply or radial on it anywhere?
    Thurston County, WA, effective motto: "Gophers, Gophers Über Alles"

  22. #20
    Senior Member Timbo's Avatar
    Join Date
    Feb 2012
    Location
    Auburn, NH
    Posts
    756
    Real Name
    Tim
    Downloads
    0
    Uploads
    0
    I stand corrected. It's a 165-13 or 6.45-13. The tread looks like a bias-ply. You roll off that tread and good luck. It could have 17K on it. That would make it 45 years old. It doesn't look bad. I know my 73 had bias-ply tires when I picked it out on the lot and had them the radials put on before delivery.
    Attached Images Attached Images

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Bookmarks

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •