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AC B tire sizes

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Ferguson65

05-05-2003 06:32:25




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I bought an AC B to restore. I was wondering what thr correct tires sizes are for front and rear.




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John P. Martine

05-05-2003 07:48:50




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 Re: AC B tire sizes in reply to Ferguson65, 05-05-2003 06:32:25  
According to the Allis Chalmers Farm Tractors and Crawlers Data Book by Terry Dean...
Front wheels, Steel - 22"x4" Rubber - 5.00x15 inch
Rear wheels, Steel - 36"x6" Rubber - 8x24 inch. The Data Book cost $11.95 at book stores and often times I see in on e.bay for people to buy that don't know any better. 6 of the 191 pages is dedicated to the B and the BE engine.



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Edward Mills

05-05-2003 10:41:13




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 Re: Re: AC B tire sizes in reply to John P. Martine, 05-05-2003 07:48:50  
I agree both Dean's books are good as well as Swinfords - but you have to be careful as to sizes. Dean's book shows earlier B's had 8-24 and 5.00-15, but B's with CE engines circa 1943-57 had 9-24 and 4-15. Both had optional sizes including 7-24, 7.50-24, 8-24, 9-24, and 10-24. And here's the problem - in 1938 when the B came out, they used a size designation like 7.50-24, 8.25-24, 9.00-24 (not 9-24). In the late 40's, the tire industry changed how they measured tires and a 9.00-24 became a 10-24. Then in the 50's they changed again and the same tire is now 11.2-24. ME Miller Tire catalog has a chart for more recent change but I believe the original 7.50-24 became 8-24, now 8.3-24; the 8.25-24 became 9-24, now 9.5-24, and I know the 9.00-24 became 10-24, now 11.2-24 as I have one of each on my B with dual markings.

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steve

05-05-2003 20:11:08




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 Re: Re: Re: AC B tire sizes in reply to Edward Mills, 05-05-2003 10:41:13  
my Bs have 4 x 15 front and 9 x 24 rear- these look good on that size tractor.



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