The official Whitewall thread - Page 23
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, The official Whitewall thread in Past Cadillac Vehicle Discussion; One of my favorite tire websites appears to no longer stock the Runway 75 or Champiro GT wider whitewall tires ...
  1. #331
    Bro-Ham's Avatar
    Bro-Ham is offline Cadillac Owners Connoisseur
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    Re: The official Whitewall thread

    One of my favorite tire websites appears to no longer stock the Runway 75 or Champiro GT wider whitewall tires in the 225/75-15 size. They do have the 215/75-15 size (deVille 1977-84, Fleetwood Brougham 1980-late 80's), and 235/75-15 (for 1976 and older Cadillacs). www.tires-easy.com

    If you have an old Cadillac, like my 1979 deVille, the sticker inside the door and the owner's manual show the old tire sizes, common 1970's Cadillac sizes deciphered below:

    G78-15 = 215/75-15
    H78-15 = 225/75-15
    L78-15 = 235/75-15

  2. #332
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    Re: The official Whitewall thread

    [QUOTE=Bro-Ham;2922276]FYI the correct tire size for your 1978 deVille is 215/75-15. The 225's work fine too, your speedometer will be off by about 5%.[COLOR=Silver]

    ----------

    5% faster or slower?

  3. #333
    Bro-Ham's Avatar
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    Re: The official Whitewall thread

    Quote Originally Posted by outsider View Post
    that's the size I bought my champiros in earlier!
    Which size did you buy for which one of your cars?

    ----------

    Quote Originally Posted by ruttrow View Post
    5% faster or slower?
    Use this: http://www.miata.net/garage/tirecalc.html

  4. #334
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    Re: The official Whitewall thread

    Thanks for the web link. It indicates the speedometer will read 2.1% slower than I am actually going. 60mph is really 61.3 mph.

  5. #335
    Bro-Ham's Avatar
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    Re: The official Whitewall thread

    Here is a list I compiled of full-size rear wheel drive Cadillac tire sizes in their modern currently available tire sizes (Cad factory made cars only):

    1968-1976: All Models 235/75-15, Fleetwood Seventy-Five 235/75-15XL

    1977-1979: deVille 215/75-15, Fleetwood Brougham 225/75-15, Fleetwood Limousine 225/75-15XL

    1980-1984: deVille and Fleetwood Brougham 215/75-15, Fleetwood Limousine 225/75-15XL

    1985-1986: Fleetwood Brougham 215/75-15

    1987: Brougham 215/75-15

    1988-1992: Brougham 225/75-15

    1993-1996: Fleetwood and Fleetwood Brougham 235/70-15

  6. #336
    sven914 is offline Cadillac Owners Connoisseur
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    Re: The official Whitewall thread

    Quote Originally Posted by Bro-Ham View Post
    One of my favorite tire websites appears to no longer stock the Runway 75 or Champiro GT wider whitewall tires in the 225/75-15 size. They do have the 215/75-15 size (deVille 1977-84, Fleetwood Brougham 1980-late 80's), and 235/75-15 (for 1976 and older Cadillacs). www.tires-easy.com

    If you have an old Cadillac, like my 1979 deVille, the sticker inside the door and the owner's manual show the old tire sizes, common 1970's Cadillac sizes deciphered below:

    G78-15 = 215/75-15
    H78-15 = 225/75-15
    L78-15 = 235/75-15
    Quote Originally Posted by sven914 View Post
    I called GT Radial today (manufacture of the Runway Enduro 75) and they said all Runway white walls are being discontinued, as of this year. So if you have Enduros, there might not be any replacement tires, if you have a road hazard or defective tire. It might not hurt to pick up an extra one before the supply dries up.

    The Champiro 75 (also made by GT) is still in production, but they might have those slated for discontinuance as well.
    It's not a good idea to buy tires that have been or are being discontinued. If you have a road-hazard, and need a replacement tire, you will not be able to get a replacement. You'll end up with mismatched tread patterns, which if placed on the drive axle, will damage the differential.

  7. #337
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    Re: The official Whitewall thread

    Show me some proof that different treads will damage a diff. I believe you are thinking of different height tires on each side, with a posi.

  8. #338
    csbuckn is offline Cadillac Owners Master
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    Re: The official Whitewall thread

    Some treads designs cause more drag then others. Two different treads with different drag rates would cause one side to drag more then the other. Is it enough to cause damage to a RWD axle, probably not, but techically......

    I suppose putting a Goodyear Assurance Fuel Max with a Goodyear Wrangler ArmourTrac would cause issues down the road but thats an extreme example. this is just the training I got when I started in the tire department.

    Bro-Ham, my vote is for the Enduros. Nice soft ride in my 307 equiped 90.

  9. #339
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    I want a set on my car!

  10. #340
    jcolliga40 is offline Cadillac Owners Fanatic
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    Which set has the larger white wall I know the enduros have I think it was 1.25" I am not sure about the champiro. But they are mad by the same company so are they the same size ww? My bad did more reading found the answer thanks anyway.

  11. #341
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    Re: The official Whitewall thread

    1966 Brougham Fleetwood?

    1966 DeVille or Eldorado Convertible?

    Quote Originally Posted by Bro-Ham View Post
    Here is a list I compiled of full-size rear wheel drive Cadillac tire sizes in their modern currently available tire sizes (Cad factory made cars only):

    1968-1976: All Models 235/75-15, Fleetwood Seventy-Five 235/75-15XL

    1977-1979: deVille 215/75-15, Fleetwood Brougham 225/75-15, Fleetwood Limousine 225/75-15XL

    1980-1984: deVille and Fleetwood Brougham 215/75-15, Fleetwood Limousine 225/75-15XL

    1985-1986: Fleetwood Brougham 215/75-15

    1987: Brougham 215/75-15

    1988-1992: Brougham 225/75-15

    1993-1996: Fleetwood and Fleetwood Brougham 235/70-15

  12. #342
    Bro-Ham's Avatar
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    Re: The official Whitewall thread

    Quote Originally Posted by Forgoten214 View Post
    1966 Brougham Fleetwood?

    1966 DeVille or Eldorado Convertible?
    All 1966 Cadillacs used 235/75-15 tires, Seventy-Five models used the same tire size with "XL" rating.

    If you can find out the original tire size of your older car then check this site, scroll down to the second chart in white:

    http://www.turbinecar.com/tires.htm

  13. #343
    ferrisworld is offline Cadillac Owners Fanatic
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    Re: The official Whitewall thread

    Hey Bro-ham, I just got a set of 90s FWB wheels like you have and my car is the same color too. Didn't mean to copy, but I put my Impala wheels on craigslist, and a guy had them to trade, so I went for it. I also wanted a wider wheel than stock. For tires though I think now I'm leaning towards the Firestone Firehawk Indy 500 in 235/70r15, with a shaved whitewall. I saw a set shaved on a 49 ford on the HAMB site, and it looked good. From what I've read, the 9C1 crowd loves the Indy 500 right now, so it must be good.

  14. #344
    BIGREECE's Avatar
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    Re: The official Whitewall thread

    Michelin XC4

  15. #345
    Bro-Ham's Avatar
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    Re: The official Whitewall thread

    Shaved whitewalls can look homemade and tacky unless done professionally. If that's what you want then go for it.

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