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08-11-2004, 10:03 AM
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#1 |
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Registered User
 Join Date: Jul 2003
Location: Franklin, NE
Posts: 387
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Tire Question
What is the metric size of a 10.5-15 tire. This is what my 78 K-10 has on the option sheet.
Thanks Doug |
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08-13-2004, 01:51 PM
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#2 |
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Mudslides 'r my specialty
Join Date: Dec 2003
Location: STL
Posts: 1,106
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I am guessing this is a 31 X 10.5 tire...
Multiply the 10.5 by 2.54, giving you the tread width in centimeters (26.67 cm). If it is 31 inches in diameter, subtract 15 and then divide by two. This gives you the tire sidewall height (in this case 8"). 8 inches divided by 10.5 inches gives you an aspect ratio of about 76% (so it is most likely 75%). This would be close to a 265/75-15, but is more likely a 31X10.5-15.
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Always on the lookout for old cars and parts...(20s, 30s, 40s, 50s, 60s, etc.) http://www.cardomain.com/memberpage/500339 |
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08-13-2004, 04:59 PM
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#3 |
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Registered User
Join Date: Sep 2003
Location: Lewisville, NC
Posts: 1,836
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Why not just buy a set of Flotation series tires? Then your tire size would be correct for your option sheet
 My truck also had the 31x10.5" tire option.
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1985 Scottsdale Shortbed 4x4 Stout 350 with some "upgrades"-700r4-33x12.5" Mud Tires, Warn 8274-50 winch. 2005 Chevrolet Colorado Regular Cab 2wd 4-banger, 5 speed, Street Pack with 3.73 axle. |
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