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Found 9 results

  1. Hello all At home I have 4 old rims of CMR from my father. Engraved are the following letters/numbers. R1-550. Does the 550 stand for the size ? Size 5.5 ?
  2. Awaiting photos Dates noted: 10-67 6-71 (Later examples are dated on both the barrel and the face of the rim. Early examples are dated only on the barrel, and thus dates are not readily available on early rims with tires mounted.) CMR Steel Rim Analysis Summary.pdf
  3. Manufacturer dates found: 4-71 6-72 11-72 (Later examples are dated on both the barrel and the face of the rim. Early examples are dated only on the barrel, and thus dates are not readily available on early rims with tires mounted.) CMR Steel Rim Analysis Summary.pdf
  4. Manufacturer dates found: 3-72 7-76 6-77 4-79 5-79 11-80 Rolled/Pulled fenders Camber plates No spacers IE stage II rear springs 205/60 r13
  5. (Last edited 10-10-2018) Note: A PDF version of my CMR steel rim matrix is attached at the end of this original post. I long hoped to find a set of 5x13 Borrani steel rims for my very stock '76. Why? My snows, of course! Rare? You bet! Desired? Not so much! They were, however, regularly offered for sale, such as in the '70s GS Tuning catalogue and The Roundel. I suspect many, perhaps most, of the 5x13 rims served "snow-tire duty" back in the day. And in November 2012, I purchased a set of four 5x13 rims, most-recently worn by a bona fide German 2002ti and still wearing their factory-applied gray-beige finish (third photo below, after hours of polishing). Provided they run true, I will keep this amazingly-intact original finish. While waiting to find that set of 5x13 rims, however, I decided to assemble some data on CMR-manufactured steel rims. CMR are the initials of Costruzione Meccaniche Rho, S.p.A., the Rho, Italy-based wheel manufacturer into which Carlo Borrani S.p.A. merged in the 1950’s — reportedly after the Borrani-named firm found itself lacking heirs to carry on its business independently. “Ruote Borrani Milano” survives as a division of CMR. It produces — or at least is used to market — all Borrani wire wheels, as well as a number of bi-metallic and specialty rims produced over the decades since Carlo Borrani S.p.A. was merged out of existence. There was a great deal of information out there, but it wasn't organized or summarized, leaving us with lots of loose ends. For example, what models of these rims were produced and when were they produced? I looked primarily at old Roundels, this forum, and the forum offered by the German BMW 02 Club e.V. Here's what I found -- nothing likely to blow your socks off but it dispelled my personal belief that Alpina steel rims (CMR with circular cut-outs) were superseded by Borrani steel rims (CMR with triangular cut-outs). Looking at photos or text that provided dates for rims, the earliest dated Alpina example I have is October 1967 and the latest is September 1972. The earliest dated Borrani example I have is April 1968 and the latest is December 1983. Examples of CMR steel rims produced prior to 1971 may not have stamped markings on the front or rear faces of the rims; only the tire race (a.k.a., barrel) will exhibit the manufacturer, size, and date of manufacture. Alpina steel rims were offered in 5" and 5.5" widths. One contributor thought he recalled, but no longer owned, a set of 6" Alpina rims. Having found no trace of such a width among examples and documentary sources, however, over the course of 4 years, I have now dismissed the possibility of a 6" Alpina rim as a CMR factory offering. I will be happy to be proved wrong: just show me the rims! Borrani steel rims were offered in 5", 5.5", 6", and 6.5" widths. Examples wider than 6.5" were likely modified after leaving the factory, and examples have been modified to a great many different widths -- I've seen widths ranging from 7" to 10"! My conclusions are based on a relatively small population of examples, 157 rims. I would like to expand that population, particularly to improve the accuracy of the date ranges. If you don't mind, could you please post a photo of your rim(s), showing the cut-out shape and the impressed data either on the rim's face around the hub or under the tire, i.e., in the "tire race"/barrel (the latter is obviously not accessible if you have tires mounted)? Attached are my examples. If you are shy, or terribly discrete, feel free to simply send me a PM or an e-mail ([email protected]): that's great as well. The entry I first initiated on 7-10-12 -- found below, posting #38 on page 2 of this string -- contains a listing of my observations to date, prepared on the basis of the attached pdf summary (which is also attached to posting 38 of this thread). Thanks kindly for all your input. The following represents your work and contributions. I'm just the compiler! Steve CMR Steel Rim Analysis Summary.pdf


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