WC Tires

10:00 - 24 thanks; ac fleet

So does that mean either 14.9X24 OR 13X24 are correct? I've seen both in the conversion chart as well. Actually I thought it was 13.6X24?

The mechanic always wins.

B91131, WC23065, WD89101, CA29479, B1, Early B10, HB212, 416H

14.9's all the way Big smile

Mine were take offs from the steer wheels on a combine. way cheaper than new as it just cost me gas to drive 30 miles to pick them up.

http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

The way they number the tires changed over the years. The old 11.25 x 24 was changed to 13 x 24. Same tire, just measured in a different spot. Then in the late 50's or whenever, the 13 x 24 became the 14.9 x 24. Same tire as the 11.25 x24 and 13 x 24. The older tires used to say both designations on the same tire because they are the same tire. Tires didn't change, the number did. That all said, actually there was a minor change to the bead area in the late 30's so now the old rims for 11.25 x 24 won't quite fit right to the newer tires but they'll work.

Edited by Lonn - 01 Apr 2016 at 6:56am

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Wink
I am a Russian Bot

There is at least 3 series of numbers and rim requirements,maybe more and more differences than where they were measured. Ted Buisker could give all the specs because he worked in the industry, I dont have it committed to memory. The biggest and most important change came long before the D series and current tire designations when the tire manufacturers went to wide base rims. After the change to wide base rims the numbering system changed to what we use today but the fit is good. This would include everything from a WD-45 on up. This is not the case for the very oldest rubber tired units such as the WC where the old balloon type tires were designed to mount on 8 or 10 inch wide rims,, and also why this question never comes up for a tractor made after 1940 or thereabouts.

Edited by Butch(OH) - 01 Apr 2016 at 8:08am

Thanks for the ideas, I think the 14.9 looks a little fat for the rim but it's probably going to be easier to find in a used than a 13.6

O.K., so what size tire should I put on the original 8" wide rim to be as close to original as possible?

The mechanic always wins.

B91131, WC23065, WD89101, CA29479, B1, Early B10, HB212, 416H

If it was mine 14.9x24

littlemarv wrote:

O.K., so what size tire should I put on the original 8" wide rim to be as close to original as possible?

The way I understand this is, the 14.9 is basically the same tire as the 11.25 but put on a wider rim and measured different. The original 8 rims work fine with a 14.9 tire, just may be a bit more round top on an 8 inch rim than on the later 13 inch rim.

http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

It will fit but looks anemic in my opinion. Original tires were 11.25-24 or 13-24 which is now a 14.9-24. That size may have been an option? But a 13.6-24 almost looks too small to me.

http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

uploads/14930/Screen_Shot_2016-06-04_at_10.21.36_PM.pdf

I'm not sure if this picture attached properly but that ME Miller chart is exactly right. I've been studying F&H wheels, rims, and early tires for several years now and have quite a bit of information on when and why the sizes changed. Goodyear was the first company to figure out around '38-'39 that it was better to have a wider rim that allowed the sidewall of the tire to be straight rather than rounded. The original tires from '32 to '39 were called balloon tires and they bulged out wider than the rim. The widest rim in the early days was 8". To go along with these wider rims after '39 the tire companies also redesigned their tire to have a straight sidewall and a thicker tread section. All of these rims and tires were then called "wide base" and the old ballon tires and drop center rims were referred to as "conventional".

This was the biggest change in the tire numbering system. So the 11.25 tire was really discontinued at a certain point and the 13-24 "wide base" tire was sold to replace. The tire itself was changed. The later change to the decimal system just better reflected the actual size of the tire width. So 13-24 became 14.9-24. Same tire, just a different label. But neither of these were exactly like the early balloon tires. Most tires changed during the 40's and later would be of this new wide base type so technically the 14.9 is correct. Some people do prefer the 13.6 though. Hope this helps.

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