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General Minitrail Talk
Modifications
Replacement tires for OEM 4.00 x 10 Trailwings
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<blockquote data-quote="Samzilla" data-source="post: 71554" data-attributes="member: 365"><p>I've got a 1972 CT70H K1 and want to replace the original 4.00/10 tires with a street tire. I've read all of the threads and it seems that most of the recommended replacement sizes are closer matches to the 3.5 x 10 OEM tire found on some models.</p><p> </p><p>By my calculations, the stock 4.00 x 10 tire equates to:</p><p> </p><p>Diameter = 18"</p><p>Width = 4"</p><p>Height = 4"</p><p> </p><p>The closest metric conversion to this would be either:</p><p> </p><p>110/90/10 (a size which virtually doesn't exist) or</p><p>100/100/10 (again, not available)</p><p> </p><p>Here are size combinations that were suggested from the various threads. I've limited them to only those that will fit the CT70 without rubbing and that do not require modifications whatsoever.</p><p> </p><p>Size Diameter Width Height Front/Rear</p><p> </p><p>120/70/10 16.6" 4.72" 3.3" Front</p><p>130/70/10 17.2" 5.1" 3.6" Rear</p><p> </p><p> </p><p>100/80/10 16.3" 3.93" 3.1" Front</p><p>120/70/10 16.6" 4.72" 3.3" Rear</p><p> </p><p> </p><p>110/80/10 16.9" 4.33" 3.4" Front & Rear</p><p> </p><p> </p><p>100/90/10 17.1" 3.93" 3.5" Front & Rear</p><p> </p><p> </p><p>120/90/10 18.5" 4.72" 4.2" Front & Rear</p><p> </p><p>Based on the above, the 120/90/10 is the closest tire to the 4.00x10. It should fit without a problem and because the diameter is closer to OEM than any other tire, the speedometer should be relatively accurate.</p><p> </p><p>Just my 2 cents. What are your thoughts?<img src="https://lilhonda.com/images/smilies/traildude1.gif" class="smilie" loading="lazy" alt=":yellow70:" title="Yellow CT70 Dude :yellow70:" data-shortname=":yellow70:" /></p></blockquote><p></p>
[QUOTE="Samzilla, post: 71554, member: 365"] I've got a 1972 CT70H K1 and want to replace the original 4.00/10 tires with a street tire. I've read all of the threads and it seems that most of the recommended replacement sizes are closer matches to the 3.5 x 10 OEM tire found on some models. By my calculations, the stock 4.00 x 10 tire equates to: Diameter = 18" Width = 4" Height = 4" The closest metric conversion to this would be either: 110/90/10 (a size which virtually doesn't exist) or 100/100/10 (again, not available) Here are size combinations that were suggested from the various threads. I've limited them to only those that will fit the CT70 without rubbing and that do not require modifications whatsoever. Size Diameter Width Height Front/Rear 120/70/10 16.6" 4.72" 3.3" Front 130/70/10 17.2" 5.1" 3.6" Rear 100/80/10 16.3" 3.93" 3.1" Front 120/70/10 16.6" 4.72" 3.3" Rear 110/80/10 16.9" 4.33" 3.4" Front & Rear 100/90/10 17.1" 3.93" 3.5" Front & Rear 120/90/10 18.5" 4.72" 4.2" Front & Rear Based on the above, the 120/90/10 is the closest tire to the 4.00x10. It should fit without a problem and because the diameter is closer to OEM than any other tire, the speedometer should be relatively accurate. Just my 2 cents. What are your thoughts?:yellow70: [/QUOTE]
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Replacement tires for OEM 4.00 x 10 Trailwings
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