2650 is a B series, correct? Series makes a difference as I believe wheel spacers will void warranties in some, not in others. Thickness of spacers may also play a role as to whether or not the warranty is voided.
That said, the warranty on my BX has expired, and I am greatly enjoying 2" spacers and turf tires over the original R-4's.
For MY purposes, mowing and snow removal, with no loader, turfs work far, far, far better than the R-4's I put up with the first few years. R-4's are just too stiff and the ride was horrible. Ride quality makes a difference when hip and back issues come into play. Turfs and chains work better in the snow than R-4's alone, or with chains which fall between the lugs and become useless.
I've tried to sell the original R-4's, but nobody wants to pay more than a give away price, so apparently there aren't that many people who really want them when it comes right down to it.
Yes, the 2650 is the B series. When I traded in the B3350, and not happy with the depressions the r4's left in the grass, I ended up getting turf tires with OEM 1 3/8 rear spacers. I was concerned about warranty as you mentioned and engineered specs. I haven't heard anything negative about the 2" spacers and I'm sure the extra width helps to a degree, but I rather be safe than sorry.
Since I didn't get much practice time learning just how far I could push the B3350 without tipping over, (thank goodness! lol) it's hard for me to compare stability, although the weights and size are almost identical. I have been far more adventurous with the B2650 since I "feel" safer with the spacers. For that I have no regrets whatsoever. So far I am very pleased with the maneuverability and its handling on the turf, both up and down steep inclines and traversing along side the hill as well. I have been keeping it in 4 wheel drive all the same.
I have used the front loader for several small jobs, and I did notice I spun the tires tearing up the turf a bit at first, but once I went really slow, I found I was able to get my work done without damaging the turf. A definite plus.
I plan to leave me backhoe on for the most part, for ballasting reasons. I was debating a 3 point sprayer for a small orchard I have, but I'm taking it slow. For now I got a northstar atv sprayer that suits me well. Maybe next year. (I need to get good at detaching and reattaching my other attachments first
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I used my snow blower 7 times this past winter. I didn't have any issues slipping with the R4's. But it was mild, and I want to be prepared for the worst. You've confirmed what other people have said about the turfs handling better in the snow/ice with the chains. So I'm glad I went with the turfs, undoubtedly.
At first I was hesitant in getting chains because I didn't want to mar up my nice blacktop, but I would rather walk around fixing it with a bucket of tar than sliding out of control and flipping, or even worse, tumbling down a ravine and crushing my cab to bits.
I also ended up NOT ballasting the rears. Some have said it would help me from tipping. When I spoke with the kubota mechanic, he said it wouldn't be necessary. He said since the backhoe went past the axle it would provide more than enough ballast. That and it's about 850 pounds! lol I'm still amazed how much these tractors can handle!
I agree, the ride quality seems to be a bit smoother although I haven't taken it on my blacktop yet, Once I hook up the snowblower that'll be the true test. My turf is kinda hilly and bumpy anyway and I've been going slow, still breaking her in, but I hear ya, my back just ain't what it used to be, Every bit helps!
I also picked up a set of R1's for my forest/stream crossing work, although I haven't used em yet, I'm sure they will perform. They are chunky!
It kinda surprises me some people don't have a set of each. What with the amount of money folks spend on a multitude of attachments, it just doesn't make sense not to if you have cause for it. I've got work boots, hiking boots, rain boots, pac boots. The right tire for the right job!
I guess it's just easier for corporate to sell one "jack of all tires." I was also a little disappointed in not being able to find a 6 or 8 ply turf tire for the tractor so I could benefit from the weight/load ratings that r4's offer. Titan lists them as for sale but you can't get them, not enough demand they said. Ah well, I dress light and skip breakfast before I head out. lol
Thanks for the reply!