Tire loading for Turfs on BX vs B?

PNWBXer

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BX2380
Feb 24, 2020
134
11
18
Washington
NERD ALERT!!! (the OG of trigger warnings :D)

When comparing Tractor Weights last night I noticed that the B2301/2601 was only slightly heavier than a BX2680 and BX2380. B2301 = 1566lb, B2601 = 1632lb vs BX2380 =1443, BX2680 = 1521. With larger tires the ground contact PSI could actually be lower on a B2301 than a BX2680. But I don't know. Trying figure out if anyone came up with numbers for ground contact PSI (not tire pressure) numbers for front and back tires on a uniform hard surface.

After a google search on the topic there was a TBN thread like 12 years ago but went down some rabbit holes that didn't come up with an answer. So my question is to narrow the focus:

Anyone know the Front vs Rear axle weight of the BX and B? Aka how much weight is disturbed on each axle? If I had that info I could roughly calculate a ground contact PSI for front and rear tires for both tractors given the ground contact patch on solid surface. I don't want to go down the rabbit hole of ground softness and such....just a general ground contact PSI for Turf tires between the 2 tractors. Anyway...it can get wet in the Pacific northwest...and letting the ground dry out completely isn't always an option (better have good drainage!!).

Other than bringing the nerds to the fight....it would be interesting to see how much generally a B and BX differ as far as ground contact. It wouldn't surprise me if they weren't that different.

I guess what I'm getting at is I want to get away with the most tractor with the least damage to the lawn. The B2301 has much better lifting load capacity (1800lb vs 600lb !!!!) in it's FEL then the BX80 series.....meaning if the B2301 and BX80 were close in ground contact PSI....if you could afford it....you would be getting more tractor given the lawn.

And to eliminate another rabbit hole. I'd only be comparing the B and BX with a MMM. The the ground contact PSI would be much much higher on the front tires with the FEL and a heavy load....obviously. Anybody knowledgeable on the subject?
 
Last edited:

North Idaho Wolfman

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Jun 9, 2013
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A B2301 Will have less weight per squae inch, as the tires are bigger.

But to get your loader capacity up to the max your going to need to load the tires and have a ballast box.

Loaded tires in a turf tire do not significantly change the bite, or ground tear up.
It just makes the tractor more stable.
 

PNWBXer

Member

Equipment
BX2380
Feb 24, 2020
134
11
18
Washington
Trying to WAG it a little bit (wild ass guess).

Assumptions: Rear tire only measurements, Equal weight on all 4 tires (2 axles), Each tire has 2 inches of trend on the ground at any one time (again this is not true but makes for easy comparisons)

B2301 Rear tire is 33 cm wide or 13 inches
BX2380/2680 Rear tire is 24 cm wide or 9.5 inches.

B2301 weighs 1566 lbs /4= 392lbs per tire
BX2380 weighs 1433 lbs /4= 358lbs per tire
BX2680 weighs 1521 lbs /4= 380lbs per tire

B2301 SI patch area 13X2 =26 SI
BX2380/2680 SI patch area 9.5X2=19 SI

B2301 P/SI 392/26= 15 PSI
BX2380 P/SI 358/19= 19 PSI
BX2680 P/SI 380/19= 20 PSI

So given my quick not completely scientific method of calculation .....

At the rear tires....the B2301 will be "lighter" on my lawn than either the 2380 (which i'm going to pick up next week) or the 2680.

This all ignoring the fact that Bigger diameter tires actually have a larger patch on the ground thus even more weight dispersion. So idk...maybe should have gone with the B2301!?!

I get what you are saying about weigh needing to be added for Safety with the FEL. This was just trying to figure out specifics of trying to reduce turf damage. Not adding weight for other uses like using the FEL is just asking for a rollover and reduced performance.
 

BigG

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Sep 14, 2018
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Why this obsession with the weight per tire? The tractor is not going to damage the ground with any of the tractors you have mentioned. I grew up in SE Ohio a very hilly part of the country. Almost every tractor that was sold by the Wheelhorse dealer, where my brother worked, went out the door with ag tires on them. The turf tires spin and slide on the hill sides and leave you stuck in the wet places. If ground compaction is truly a concert buy the tires that will let you use the tractor and run an aerator over the yard.