jimriviera Posted September 6, 2018 Share Posted September 6, 2018 I have the Automobile Manufacturers Association (AMA) Specifications publication issued 9/1/66 which lists the only tire size available as 8.85-15 bias ply. I have the revised specifications dated 12-15-66 which shows 225R-15 radials available. My question is -- will the AACA judges accept this revised specifications document when judging my 1967 Riviera with radial tires? Link to comment Share on other sites More sharing options...
Restorer32 Posted September 6, 2018 Share Posted September 6, 2018 Only factory documentation is accepted. An AMA Specifications list would not be factory documentation. If you find something from Buick listing radials as an option the judges would accept it. 2 Link to comment Share on other sites More sharing options...
Phillip Cole Posted September 6, 2018 Share Posted September 6, 2018 Actually, the guidelines do mention Buick and Olds having radials as early as 1967. Link to comment Share on other sites More sharing options...
jimriviera Posted September 6, 2018 Author Share Posted September 6, 2018 OK. Does anyone have Buick Documentation showing radial tires available in 1967?. Where would I go to find such document? Link to comment Share on other sites More sharing options...
61polara Posted September 7, 2018 Share Posted September 7, 2018 I suggest posting this in the Buick Riviera section below. There may be a technical service bulletin that covers a tire change. Link to comment Share on other sites More sharing options...
61polara Posted September 7, 2018 Share Posted September 7, 2018 http://www.v8buick.com/index.php?threads/1968-riviera-original-tire-info-needed.98024/ This tread indicates that radials (225Rx15) were an option in 1967. You will need to find the documentation from Buick that this was an option. Current judges training states that a P225Rx15 is not the same as a 225Rx15. You may have an uphill battle on this one. If you have P225Rx15's on you car have all the documentation you can find. Link to comment Share on other sites More sharing options...
Bob Hill Posted September 7, 2018 Share Posted September 7, 2018 Try finding a 1967 Buick factory sales brochure or try the AACA Library Bob Link to comment Share on other sites More sharing options...
Phillip Cole Posted September 7, 2018 Share Posted September 7, 2018 Try ask David Landow to see what is in the BHA has in the collection. Dlandow@LandowCo.com Brian DePouli on Phillips phone... Link to comment Share on other sites More sharing options...
jimriviera Posted September 18, 2018 Author Share Posted September 18, 2018 (edited) I have received the tech bulletins from Buick which show the availability effective January 31, 1967. This Information is courtesy of Tom Mooney, ROA Technical Advisor. The question was posted on the ROA forum whether AACA judging would require a particular brand of tire, ie. a brand available in 67. What say you? Edited September 18, 2018 by jimriviera needed to credit ROA advisor for the documents. (see edit history) Link to comment Share on other sites More sharing options...
PWB Posted September 18, 2018 Share Posted September 18, 2018 I'll throw a wrench in this: Notice they underlined whitewall. Were red stripe radials available for '67? Bet not from dealer. Mr. Jim, we'd sure appreciate a pic of your Riv. Thanks Link to comment Share on other sites More sharing options...
Restorer32 Posted September 19, 2018 Share Posted September 19, 2018 That's a fine example of what we mean by "factory documentation". Link to comment Share on other sites More sharing options...
61polara Posted September 20, 2018 Share Posted September 20, 2018 (edited) Now you have the documentation. You can run a 225R X 15. To avoid a deduction, this is not a P225R75 x 15. Diamond Back Tires offers a correct 225R X 15 they have made for the Lincoln Mark III. Others may offer this as well. This includes the spare, which should match in size. Brand is not important. Edited September 20, 2018 by 61polara Additional information (see edit history) Link to comment Share on other sites More sharing options...
jimriviera Posted October 1, 2018 Author Share Posted October 1, 2018 OK. Does that mean that the AACA judges will deduct points fro P225R75x15 tires? If so, what is the point deduction? Yes Diamond Back Tires has the 225R-15 tires but they are over $200. Also only available by mail-order. It is difficult to believe that the judging is that particular on this item. Link to comment Share on other sites More sharing options...
Phillip Cole Posted October 2, 2018 Share Posted October 2, 2018 A lot of research has been done on tires over the last several years. There is a detailed CJE on tires. Most judges know the tire guidelines. 2 each per tire including spare. It used to be more.... 1 Link to comment Share on other sites More sharing options...
Phillip Cole Posted October 2, 2018 Share Posted October 2, 2018 23 hours ago, jimriviera said: OK. Does that mean that the AACA judges will deduct points fro P225R75x15 tires? If so, what is the point deduction? Yes Diamond Back Tires has the 225R-15 tires but they are over $200. Also only available by mail-order. It is difficult to believe that the judging is that particular on this item. jimriviera, Here is what the Guidelines say in relation to your question. 61polara was referring to these guidelines for Chassis. This morning, I had time to check online with my local discount tire store and they have several brands ("Specific brand is unimportant.") available for less. Just make sure they follow your factory documentation. From Judging Guidelines, under Chassis, pages 2-23 and 2-24: (Highlighted text is mine in relation to your question.) "11. Tires on all vehicles must be as specified by the manufacturer. Specific brand is unimportant. …Some manufacturers offered a radial tire - for specific vehicle(s) - as a factory authorized option to the standard issue ply tire. The use of red line radials on a vehicle should be accompanied with documentation. It is advisable to seek documentation from the vehicle owner when a tire size or type is in question. This is especially so in cases of limited production, specialty vehicles, and foreign made vehicles. a. LETTER SIZE tires, i.e. G78-15, GR78-14, etc 1967. b. RADIALS, i.e. 185R14, 175R13, etc. Domestic Cars. (Factory documentation is required for any vehicle with radial tires prior to the years listed below.) Some domestic manufacturers offered these tires as early as 1967, such as Buick and Oldsmobile. It is possible that others may have offered them as well. BEFORE taking any deductions, the Team Captain will ask the owner for documentation. (Note: European built vehicles can be much earlier) (Japanese vehicles 1967, possibly earlier). c. LOW PROFILE METRIC RADIALS, i.e. P195/70R13, P195/70VR14 Domestic Cars as early as 1979. European cars 1969*, Japanese cars 1975* *Also refer to above Note when judging foreign made vehicles." Link to comment Share on other sites More sharing options...
61polara Posted October 4, 2018 Share Posted October 4, 2018 At least you have options. I have a 1970 car that came with F78-14 bias plys. Radials were not an option. The tire is available, but only with a 3" white wall. The size would be correct but the white wall size would still be a deduction. Link to comment Share on other sites More sharing options...
Frantz Posted October 11, 2018 Share Posted October 11, 2018 On 10/3/2018 at 9:11 PM, 61polara said: At least you have options. I have a 1970 car that came with F78-14 bias plys. Radials were not an option. The tire is available, but only with a 3" white wall. The size would be correct but the white wall size would still be a deduction. from 2-22 "Owners not able to find a correct replacement tire should send a letter to the VP Judging indicating the specific size of the correct tire and that at least two tire manufacturers have been contacted and the correct tire is not available. Tires one size larger or smaller are acceptable. A letter from the VP Judging is the ONLY AACA ACCEPTED documentation regarding a vehicles' substitute tires. Any letter issued by the VP Judging should be shown to the Team Captain at the time of vehicle judging." Link to comment Share on other sites More sharing options...
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