Yet another tire question?

[radioman]

Ok I am gonna throw in my 2 cents: I don't even know if the tires lug nuts are the same for BX25 to BX1860. They do look awfully similar though. I am going to disagree with others here- going an inch lower on BX25 will NOT affect the drivetrain as long ALL 4 are changed out, not just the rears in 4wd. I really don't think you are going to have a bumpier ride with smaller tires. LBrown is unfortunately correct here. It will affect the ratios , but an 1 inch on a SMALL tractor ?! you will hardly notice the difference, all it will give you is a tiny bit more pulling/starting power under a load in high gear. The low gear on the BX's is so low you get all the power you need anyways from the size of the BX tractor.

If you do go with BX25, do it only because of the convenience of the BH, the way it comes on/off. The set of turf tires you have will sell like hot cakes anyways if it doesnt fit, and this little tidbit would be great useful info here on TBN for future BX owners wishing to swap like you.

My gut feeling says it will fit. Nearly all of the BX stuff is interchangeable and of course there are exceptions .

 

[milkman]

I don't think you'll need the turf tires, but you do NEED a skidplate even though you have the so called fan protector. Just look under there and you'll see that it will do little to keep a stick from getting in there. Make a skidplate or buy one, it'll be cheaper than replacing the fan.

 

[SPYDERLK]

Ok I am gonna throw in my 2 cents: I don't even know if the tires lug nuts are the same for BX25 to BX1860. They do look awfully similar though. I am going to disagree with others here- going an inch lower on BX25 will NOT affect the drivetrain as long ALL 4 are changed out, not just the rears in 4wd. I really don't think you are going to have a bumpier ride with smaller tires.

Since the front/back are of different sizes the tire size must change in equal proportion to maintain the same front back lead/lag ratio. It is my experience that the small Kubotas go up in 1" increments front and back as the model # escalates. This is not an equal proportion increase. Going up from standard by equal increments will increase front lead [good for steering agiliy] - - going down will cause lag, pushing the fronts, and impair steering agility. I have 1" bigger tires on the BX1500. Very good steering response compared to stock. And I did notice a better ride.
larry