15.5X38 tires on a Farmall 350

Dean Olson

Well-known Member
I've found a nearly new pair of 15.5X 38" BF Goodrich tires and 14" rims cheaper than I can buy new 13.6x38's.

I measured the height and they are within about 3" difference between my worn out 12.4's and the new 15.5's. This tractor is more of a toy that is used in parades, run a shredder, and pull a hayrack for hayrides.

What are the pros & cons of putting on oversized tires?
 
They should be about the same diameter as the 13.6*38s, just a little wider. For what tires cost, I'd run the 15.5s. (but I also like big rubber on a tractor)
 
They should be about the same diameter as the 13.6*38s, just a little wider. For what tires cost, I'd run the 15.5s. (but I also like big rubber on a tractor)They shouldn't look too big or cartoony.
 
I have 15.5x38 on my 350lp, When I bought it it had a mis matched set, Now they match but it looks good
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Mostly looks. For field work you can get too much rubber on a tractor but for plinking around it won't matter. If you decide you don't like them you can always trade later.
 
Put 'em on. Like others have said, the 15.5x38 are the same diameter as 13.6x38, which is what's supposed to be on your tractor anyway. These are just a little wider.
 
Either way the 15.5's won't be too much for a good 350...as long as you can mount the wide rims on your cast centers. A stock 350 has as much if not more power than an old straight M. The 15.5's are the same diameter as the "factory stock" 13.6's that usually came on 350's. True, 15.5's were the "stock size" for 450's...and a lot of times they were too small just like they were too small for 560's too. The 15.5's were okay in that they didn't change the speeds when they replaced the old 12-38's..and they were wider giving more traction, BUT... a lot of 400's and even the Super M's and MTA's before them came with 13-38's (here in Michigan at least) and they were a lot taller tire and when compared to the 13-38's's, the 15.5-38's looked noticeably smaller to prospective buyers and a lot of them didn't especially like that. I'm an "old Farmall guy" and I remember that from working part-time at a dealership (Russell Stevens Co., Hanover, Michigan) in those days..1955-1957.
 

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