215/75-14 tires on a 1967 Chrysler Newport Custom

Brakes, Suspension, Rims and Tires

  1. Jakter

    Jakter New Member

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    I did some searching here and I know from previous experience that is the biggest 75 series 14" tires that are made other than Coker.
    What I didn't find was good pictures showing how well the tire fits the wheel well, IE, do they look right.

    I have some old H78-14's on there now that came with the car and look great proportion-wise but I won't drive on the highway with them.
    I want radials because I drive my cars anywhere I want and prefer them but I'm concerned they may look too small.

    I really don't want to change to 15" wheels because I like the original hubcap look.

    I'm just wondering if anybody is running that size on their C-body and how they like the fit.

    I talked to DiamondBack tires and their E-mail said they would be having a comparable size available in 3 months but I read that same time probably over a year ago on another forum so don't know if that will happen soon.

    Thanks.
     
  2. BLUPORT

    BLUPORT Loves everyone, except Carmine. FCBO Gold Member

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    If I'm not mistaken, that's what is on my 68 in thie picture, getting replaced as we speak with new wheels and tires.

    215-75-14 - I'll confirm in just a moment.
    20190105_124030.jpg
     
  3. commando1

    commando1 Sergeant at Arms FCBO Gold Member

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  4. Ross Wooldridge

    Ross Wooldridge Senior Member FCBO Gold Member

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    215s are not tall enough IMO. Don't Cooper and Khumo both make a 225/75 R14?
     
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  5. jct

    jct Senior Member

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    Sadly that's the largest size we can get from the tire store for 14 inch rims
     
  6. BLUPORT

    BLUPORT Loves everyone, except Carmine. FCBO Gold Member

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    215 is the width. 75 is the sidewall height, in ratio to the width.
     
  7. saforwardlook

    saforwardlook Senior Member FCBO Gold Member

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    No way I would put 215s on any C body.

    My understanding is that Stockton Wheel makes 15" wheels that will accomodate 14" wheel covers. I might be able to find some photos of some examples they sent to me at one time. If so, I will post them here.
     
    Last edited: Feb 11, 2019 at 12:59 PM
  8. 413

    413 Member

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    I have a 62 300 so i was looking for tires from the tires store, not the repo tire shops. 225/70R14 is made, but not 225/75R14. I gave up looking. So if there are some available I’d lie to know about it.
     
  9. MYSINBIN

    MYSINBIN Well-Known Member

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  10. cbarge

    cbarge Senior Member FCBO Gold Member

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    22575r14 is optimum size if you want to pay big money at coker.
    Diamond Back has been promising the 22575r14 for few years now with no availability.
    Even then it is smaller than the bias ply 8.55-14.
    So the next best thing is the 21575r14.
    Smaller still but works.
    They are on the 66 300 sedan no issues.
    That car is getting disc brakes and 15 inch this summer. The 14's will be for sale when ready.
    23570r15 is 28 inches tall same as the 8.55-14
    1966 300 revival 002.JPG
     
    Last edited: Feb 11, 2019 at 5:55 PM
  11. cbarge

    cbarge Senior Member FCBO Gold Member

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  12. BLUPORT

    BLUPORT Loves everyone, except Carmine. FCBO Gold Member

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    I can't wait to post pictures of my new setup...
     
  13. cbarge

    cbarge Senior Member FCBO Gold Member

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    22570r14 are actually smaller in O.D. than the 215 75 14 and 225 75 14's
    Despite not being "correct" I agree they work on the car shown,no problem.
    What can ya do when there are not many choices out there unless you mount trailer tires on the (which I do NOT recommend).LOL
     
  14. cbarge

    cbarge Senior Member FCBO Gold Member

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    IIRC,Stockton went belly up a long time ago.
    I could be wrong,but remember inquiring when i wanted 15's to fit my NOS 14" NOS deep dish wheel covers.
     
  15. FURYGT

    FURYGT Senior Member

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    215/75R 14's Photos. Too small. Wished I had went for large 14's way back in the late 90's when I bought the tires for this Sport Fury.

    Yellow 68.JPG

    Yellow Fury at Carter Show.jpg
     
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  16. 413

    413 Member

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    They are a bit too small, but the only reasonably priced tire. The restoration tires are too much money and not very good quality.
     
  17. HWYCRZR

    HWYCRZR Senior Member FCBO Gold Member

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  18. cbarge

    cbarge Senior Member FCBO Gold Member

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    First pic 8.55-14 bias ply roller.
    Second pic 23570r15
    Same outer diameter.
    Both fill out the wheelwells even with the car empty and no bumpers
    I respect the OP wishes to stay 14 inch but not much out there and going 15 is the way to go if you drive your car a lot.
    boab april 2017 001.JPG
    BoaB June 2018 007.JPG
     
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  19. saforwardlook

    saforwardlook Senior Member FCBO Gold Member

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    I called them today and is still in business (they never went away they said) and confirmed they do make 15" wheels that mount 14" wheel covers for Chrysler products. I just want to see what they look like, i.e. does one notice the larger bottom of rim to wheel cover dimension or not. I know they have supplied those wheels to guys with 300 letter cars that have 14" wheels but want to upgrade to 15" to accomodate disc brakes, yet leave the standard wheel covers in place.

    I don't want to pay big $$ for specialty 14" tires going forward, and want to use the brands like Hankook or Cooper, etc that are mass produced and likely better made with modern techniques compared to reproductions using old molds and associated techniques to make questionable longevity/quality tires.
     
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  20. CBODY67

    CBODY67 Senior Member

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    Before anyone gets all excited, remember that the base tire on a '66 Newport was 8.25x14, which later became G78-14, and equated to the OLD metric radial size of 205-14. IF the Newport had factory a/c, then it got 8.55x14s, which became H78-14, and 215-14 OLD metric radial sizes.

    Conversion of the earlier section widths to metric numbers results in a 8.25 x 25.4mm = 209.55mm, 8.55 x 25.4mm = 217.17mm, with the station wagon 9.00x14 being 228.6mm wide.

    So, from that perspective, with the P-metrics having section width numbers about "10mm" more than the OLD metric sizes, then P215/75x14s are in the hunt more than many might suspect. Plus they will certainly support the weight of a C-body car with no issues. When I could get them, I put a set of Kelly-Springfield P225/75R-14s on the '67 Newport (which were glass-belted radials, rather than steel-belted), back in the earlier '80s. They looked just fine on the stock 14x5.5" wheels.

    As for weight-carrying capacity, even the old 8.55x14 size had about 7000lbs of weight capacity (4 tires), which considering the "title weight" of about 4100lbs for our '66 Newport Town Sedan, had a good safety margin at 30psi cold inflation pressure, much less the stated max inflation pressure of 32psi. The P-metrics might need to get to 35psi for similar ratings, though.

    I replaced the K-S tires with some BFG Advantage T/As in P245/70R-14 size. They matched the old H78-14 size exactly, as I recall. Factoring that down to a 75 aspect ratio, probably a tad bit taller?

    By observation, we've become more sensitized to seeing cars with larger wheels on them, especially with the switch to 15" wheels in '69. Compound that with the more recent (what I term) "Hot Wheels" look which some now desire . . . and the old wheels just look tiny, but that's just the way they were back when the cars were new. In a day when a 6.0" wide rim was WIDE, compared to the normal 5.0" or 5.5" rims that were on the narrower tires back then . . . and prior.

    I know that when the P-metrics came online, there was some confusion about equivalent sizes for the older tires. Some said to use inflation pressures of "+3psi" for similar width numbers, but even back then, I felt the main criteria should be weight capacity rather than "numbers" on the sidewall. As things have evolved, my orientation has been generally where things ended up.

    P235/70R-15 has a revs/mile spec very similar to P225/75R-15, so there are some similarities in those two sizes' fitments/interchangeabilities. The H78-15 (8.45/8.55x15) was replaced by the P225/75-15 size, according to my calculations AND they fit the cars just fine, by observation. With plenty of weight capacity for a loaded C-body. Or a '90s Buick Roadmaster with the trailer package.

    Cooper did build a Trendsetter SE in the P225/75R-14 size. I discovered those on a '65 Newport at Mopar Nats one year, (1990s). They were an exact size/cosmetic match for the old Goodyear Super Power Cushion 8.55x14 whitewalls that came on our '66 Newport Town Sedan (factory a/c). When I got back home, I looked them up on their website. 4.5" tread width and all. But like other 8.55-14/H78x14 tires used on so many '60s and mid-'70s cars, that size seemed to get into a "dead zone" of tire sizes. Seems that the Korean brands are where the P215/75R-14 tir3es are now found in white wall sizes.

    The images below are some I've harvested via Google. I highly suspect that both cars will have the old 8.55-14 tires on them. "Tiny" and narrow-treaded, certainly, but enough "guts" to carry the weight.

    To be sure, an acceptable "upgrade" is the W23 wheels with P225/75R-15 tires on them. They look good and fit right, to me. Plenty of weight capacity, too. The P235/75R-15s are a bit "large" in diameter to me, nor is the extra weight capacity needed, to me.

    When looking at revs/mile specs on the TireRack website, the P225/70R-15 size usually has a revs/mile spec of about 750 revs/mile. That's for a G70-15 equivalent tire.

    This is the way it's all evolved, to me. Putting the OEM-spec size in modern radials looks small next to a current-spec 17" wheel, but they came with the now-smaller-looking tires on them from the factory. In a time when 15" wheels were only on things like Lincolns and Imperials, where the additional weight carrying capacity was needed. Or pickup trucks.

    CBODY67

    CHRYSLER__1967_NEWPORT CUSTOM_CL23_MAG 500_tumblr_niuqgg0zEm1tyaf2qo1_500.jpg

    CHRYSLER__1967_NEWPORT CUSTOM_TOWING_chrysler-towing.jpg
     
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