Guys I?m struggling with my 1949 or 1950 John Deere model b!! This thing is a beauty!!! Haven?t done much engine work but that beside what I?m asking... I need help with my rims and tires!!! Will a 14.9x38 tire fit on the stock rims??? PLEASE HELP!!! I have a amazing deal on tires that is impassable if they fit!!!
- Thread starter Modelbboy
- Start date
Brendon-KS
Well-known Member
- Location
- Goessel, KS
Your B most likely has 10" rims. 12.4-38 tires are designed for 11" as is printed on your tires but 10" is also an approved width. Your B originally had 10-38 tires which are 11.2-38 in today's nomenclature. However, I think those look a bit small on a late model B.
caterpillar guy
Well-known Member
Why not we have a set of 14.9-38's on an M with the original rims or as close to it as we know. Had the tractor since the mid 70's and I doubt the rims were changed before that.
Your big problem would be the change of gearing to make tractor faster in all gears so extra speed means less horsepower avaible to work and that extra size-weight of those tires will also take more power to turn them. So put all the factors together and a factory setup 46 model with the 4.5" all fuel engine would out pull your B with the 4 11/16" gas engine. Don't know if the loss of power would bother you or not. But if you are trying to do heay work it would definatly bother me. I had bothof those tractors I am compairin a 46 B and a 49 B. The 46 had a high speed tranny and the 49 a low speed and low in the 46 was equal to second in the 49 and if you put those tires on you will be equal in speed to the high speed tranny in the 46 B. So that is what you have to consider the speed and power change. Now if you are only going to be using PTO power it will not make you any difference but pulling a plow definatly a big noticable chane in pull ability. More traction but loss of horsepower.
Ronnie Budd
Member
I agree with that. The 14.9s, although they can be mounted on the B, are too big for that application (stock tractor with stock rims). However, they are in high demand in the antique pulling community. If they are in good shape, there is a lot of profit to be made on them. Buy them for $200, take some pictures, and sell them to a puller for 3 X the price.
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