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	<title>Nomenclature for Tyres - Revision history</title>
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	<updated>2026-05-09T07:02:03Z</updated>
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		<id>https://wiki.ldraw.org/index.php?title=Nomenclature_for_Tyres&amp;diff=5606&amp;oldid=prev</id>
		<title>Steffen: Created page with &quot;This is a historic page with suggestions from that time. It needs to be reworked to document the status of today (2018).   ___________________   A suggestion by  --User:Mike...&quot;</title>
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		<updated>2018-04-08T00:48:32Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;This is a historic page with suggestions from that time. It needs to be reworked to document the status of today (2018).   ___________________   A suggestion by  --User:Mike...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;This is a historic page with suggestions from that time. It needs to be reworked to document the status of today (2018).&lt;br /&gt;
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___________________&lt;br /&gt;
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A suggestion by &lt;br /&gt;
--[[User:Mikeheide|Mikeheide]] 10:11, 10 July 2011 (EDT)&lt;br /&gt;
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Nomenclature: &amp;#039;&amp;#039;&amp;#039;width_(mm) / profile_as_%age_of_width x rim_diameter_(mm) [optional qualifier]&amp;#039;&amp;#039;&amp;#039;&amp;lt;BR/&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;Please note that this dimensions has to be in mm!&amp;#039;&amp;#039;&amp;#039;&amp;lt;BR/&amp;gt;&lt;br /&gt;
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This text needs to be extended with some information about measurepoints for the dimension.&amp;lt;BR/&amp;gt;&lt;br /&gt;
Original LUGNET discussion is at http://news.lugnet.com/cad/?n=13760&amp;lt;BR/&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;Examples:&amp;#039;&amp;#039;&amp;#039;&amp;lt;BR/&amp;gt;&lt;br /&gt;
&amp;lt;code&amp;gt;&lt;br /&gt;
50951.dat - Tyre &amp;amp;nbsp;6/ 30 x 11&amp;lt;BR/&amp;gt;&lt;br /&gt;
87697.dat - Tyre 12/ 40 x 11 Wide with Center Band&amp;lt;BR/&amp;gt;&lt;br /&gt;
u9131.dat - Tyre &amp;amp;nbsp;7.2/ 45 x 8.8&amp;lt;BR/&amp;gt;&lt;br /&gt;
&amp;lt;/code&amp;gt;&lt;br /&gt;
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=== Unit of Measure Differences? ===&lt;br /&gt;
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Why are wheels and tyres in mm but screws are in LDU? ++[[User:Lar|Lar]]: [[User_talk:Lar|t]]/[[Special:Contributions/Lar|c]] 17:47, 11 July 2011 (EDT)&lt;br /&gt;
:I don&amp;#039;t know. Are they? Have to investigate. --[[User:Mikeheide|Mikeheide]] 00:46, 17 July 2011 (PDT)&lt;br /&gt;
:: They seem to be... see [[Nomenclature for screws]]. ++[[User:Lar|Lar]]: [[User_talk:Lar|t]]/[[Special:Contributions/Lar|c]] 12:10, 17 July 2011 (PDT)&lt;br /&gt;
::: I have take that from a part on the PT. I think Chris has written that. But I see no reason to change as measuring in mm/inch is quite more difficult. With this approach you can much easier find a screw that already exists and fit your needs. IMHO.--[[User:Mikeheide|Mikeheide]] 00:07, 23 July 2011 (PDT)&lt;br /&gt;
:::: So maybe it&amp;#039;s wheels and tyres that are the odd man out then. Changing them is more extensive I suppose. Also many LEGO tyres have the size imprinted/molded in the rubber. ++[[User:Lar|Lar]]: [[User_talk:Lar|t]]/[[Special:Contributions/Lar|c]] 05:57, 23 July 2011 (PDT)&lt;br /&gt;
::::: We have a mix of units across the library (studs/brick height units/LDu/actual) and it doesn&amp;#039;t make sense to use a single unit for everything. I deliberated long and hard on the tyres, to help solve the problems of small/medium/large that existed. In the discussion at http://news.lugnet.com/cad/?n=13760 I decided to go with something that most closely matches the commercial (ISO) nomenclature, which is in some cases used by LEGO. Cwdee 21 August 2011 [P.S. I didn&amp;#039;t find any reply interface, so edited the page directly - is that how this Talk thing works??]&lt;br /&gt;
:::::: Thanks for the explanation, and yes that&amp;#039;s how replying works... talk pages are just like any other pages (unless the wiki has installed Liquid Threads, which this one hasn&amp;#039;t and which I advise against). Note, you may want to consider setting your signature so that when you go &amp;lt;nowiki&amp;gt;~~~~&amp;lt;/nowiki&amp;gt; in your post it autoadds a signature. Mike and I have that set already. It&amp;#039;s in your preferences. ++[[User:Lar|Lar]]: [[User_talk:Lar|t]]/[[Special:Contributions/Lar|c]] 11:31, 21 August 2011 (PDT)&lt;br /&gt;
::::::: Thanks [[User:Cwdee|cwdee]] 12:09, 21 August 2011 (PDT)&lt;br /&gt;
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I think the units should be mm because it would be good to see this spread to other lego databases (where people might not be so familiar with LDU). I also think that the profile is not particularly useful. It&amp;#039;s mainly used as a way of figuring out the overall diameter. So why not cut to the chase:&lt;br /&gt;
 TYRE WIDTH x TYRE DIA. + WHEEL DIA.&lt;br /&gt;
[[User:Bricking|Bricking]] 01:46, 5 September 2011 (PDT)&lt;br /&gt;
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[[Category:New Ideas for Future Official Parts Standards]]&lt;/div&gt;</summary>
		<author><name>Steffen</name></author>
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