Tire and wheel options for the 7100, doing my homework

lsmurphy

lsmurphy

Active member

Equipment
B7001
Oct 19, 2012
1,197
5
36
Parrrottsville TN
Tire and wheel options for the 7100.....DONE!!!!!!!!!!


I'm going after these for the rear, 9.5 16 Titan Dura Torq.
All the 9.5 16s that I have found on the net have a stated retail of nearly $600.......gotta see what my local retailer can do for price.



Found a 8x16 wheel for the front of a Ford what will fit. $100


I'm also considering the Goodyear 9.5 16


Found a 7x12 wheel for the front. $35


I'm considering the Trupower 23x8.5x12 for the front. $100. The only thing that steers me away from this tire is the possibility of the outside cutting into the turf in a turn.


I'm also considering the 6x12 by Titan $200. But I will need to find a 5x12 wheel, I found one but they want $125 each.......I'll keep looking. This tire looks more friendly in the turns as the tread is more rounded at the sidewall but it also appears far more aggressive, more cutting on the forward pull.
 
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lsmurphy

lsmurphy

Active member

Equipment
B7001
Oct 19, 2012
1,197
5
36
Parrrottsville TN
Bulldog

Bulldog

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Equipment
M 9000 DTC, L 3000 DT
Mar 30, 2010
5,440
73
48
Rocky Face, Georgia
I have several different brands of ag tires and IMHO the long bar short bar Titans are the best of the bunch. By far my favorite of everything I have. Only draw back to them I would warn you about is on hard ground at certain speeds they ride very ruff. Other than that I say go for it.
 
A

Apogee

Member

Equipment
B6100, B7100, B8200, B9200, G4200, L175, L35
Jan 22, 2012
518
0
16
Tacoma, WA
Ismurphy,

I'd be interested in knowing where you found those front wheels for $35 (actually both front and rears).

I need to replace mine also.

Thanks,

Steve
 
kubotasam

kubotasam

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Equipment
B2410, B7100dt, B7500,Woods BH750,Landpride 2660RFM, Tiller, B2781 Snowblower
Apr 26, 2010
1,200
125
63
Alfred Maine
What Ford wheels fit the rear?
 
lsmurphy

lsmurphy

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Equipment
B7001
Oct 19, 2012
1,197
5
36
Parrrottsville TN
Lil Foot

Lil Foot

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Lifetime Member

Equipment
1979 B7100DT Gear, Nissan Hanix N150-2 Excavator
May 19, 2011
7,281
2,234
113
Peoria, AZ
S

Sterno

Member

Equipment
Kubota B6100D, B7100HST, Ber-Vac S51 3PT Snowblower, Kubota A450
Dec 9, 2012
74
8
8
Summerland, British Columbia
I'm also looking to replace tires on my B6100 with R4's.

Currently I'm rolling:

Front 6-12 (23" dia.)
Rear 7-16 (29.2 dia.)
(diameters gleaned from Carlisle)

My Owner's manual lists this as the correct sizing for a B6100D. This would give me an effective rear/front ratio of 1.27, which is well outside the 0-5%
lead variance recommended. (why would Kubota set it up like this:confused:) The front does pull fairly hard in turns.
The owners manual (from kubotamanuals.com) also lists higher travelling speeds for a B6100 vs. B7100 despite the 7100 having 8-16 rears listed (again :confused: ).

I've read on several threads that the front/rear ratio for a 7100 is 1.4664 and that a 6100 is the same. Both the 6100 and 7100 use the same 6-37 ring & pinion front & rear.

My plans are to swap to Trac Chiefs

Front 23-8.5-12 (23" dia.)
Rear 12-16.5 (32.8 dia.)

giving me a 1.42 ratio

So .... is the B6100D's ratio 1.4664 like its bigger brother, or is it different??

Doing a bunch of digging in the parts manual yielded the following:
12/25 is the front spur gear ratio and the rear uses a 55 tooth spur on the wheel side. All we need to know is how many teeth are on the Differential gear shaft (PN 6661115120). Of course the part numbers are all the same so we can be assured that 6100s and 7100s share the same ratio. There, answered my own question while typing this but figured I'd share the journey with y'all.

So all that's left is to ask you guys if I'm going too big for a 6100 in the rubber dept?
 
A

Apogee

Member

Equipment
B6100, B7100, B8200, B9200, G4200, L175, L35
Jan 22, 2012
518
0
16
Tacoma, WA
Now THAT is what I'm talkin about!!!!!!!!!!!!!!!!!!!!!!!!!!!!

A B7100 Muscle Tractor...

Beautiful Job! Now I know which direction I'm going....

:)
 
T

tmessenger

New member

Equipment
B7100D P
Feb 17, 2013
40
0
0
Fairfield, IA
My B7100 still has the original front tires the Good Year 6-12's now measure 21.25" so most likely were around 21.5" when new not 23". The 8-16 rears were replaced at some point but with the original spec Good Year tires and now measure 30.5" I would guess they were around 31" when new.

Sterno said:
I'm also looking to replace tires on my B6100 with R4's.

Currently I'm rolling:

Front 6-12 (23" dia.)
Rear 7-16 (29.2 dia.)
(diameters gleaned from Carlisle)

My Owner's manual lists this as the correct sizing for a B6100D. This would give me an effective rear/front ratio of 1.27, which is well outside the 0-5%
lead variance recommended. (why would Kubota set it up like this:confused:) The front does pull fairly hard in turns.
The owners manual (from kubotamanuals.com) also lists higher travelling speeds for a B6100 vs. B7100 despite the 7100 having 8-16 rears listed (again :confused: ).

I've read on several threads that the front/rear ratio for a 7100 is 1.4664 and that a 6100 is the same. Both the 6100 and 7100 use the same 6-37 ring & pinion front & rear.

My plans are to swap to Trac Chiefs

Front 23-8.5-12 (23" dia.)
Rear 12-16.5 (32.8 dia.)

giving me a 1.42 ratio

So .... is the B6100D's ratio 1.4664 like its bigger brother, or is it different??

Doing a bunch of digging in the parts manual yielded the following:
12/25 is the front spur gear ratio and the rear uses a 55 tooth spur on the wheel side. All we need to know is how many teeth are on the Differential gear shaft (PN 6661115120). Of course the part numbers are all the same so we can be assured that 6100s and 7100s share the same ratio. There, answered my own question while typing this but figured I'd share the journey with y'all.

So all that's left is to ask you guys if I'm going too big for a 6100 in the rubber dept?
Click to expand...
 
S

Sterno

Member

Equipment
Kubota B6100D, B7100HST, Ber-Vac S51 3PT Snowblower, Kubota A450
Dec 9, 2012
74
8
8
Summerland, British Columbia
Soooo...
Something's wrong.

Finally got my rear tires installed and lo and behold, I have major binding on my 6100D :eek:

Tires are as follows
Front Titan 6-12 Tru Power (RC 69.5")
Rear Carlisle 8-16 Farm Specialist (RC 99.5")
I measured the rolling circumferences, they are as stated above.

99.5 divided by 69.5 gives me a 1.43 ratio which should work fine given the front/rear ratio is supposed to be 1.464. Were there any variations in gear ratios that aren't covered in the online parts manual?


Does anyone have any thoughts as to what could be going on here (apart from me having tossed $400 out the window)?
 
lsmurphy

lsmurphy

Active member

Equipment
B7001
Oct 19, 2012
1,197
5
36
Parrrottsville TN
Sterno said:
Soooo...
Something's wrong.

Finally got my rear tires installed and lo and behold, I have major binding on my 6100D :eek:

Tires are as follows
Front Titan 6-12 Tru Power (RC 69.5")
Rear Carlisle 8-16 Farm Specialist (RC 99.5")
I measured the rolling circumferences, they are as stated above.

99.5 divided by 69.5 gives me a 1.43 ratio which should work fine given the front/rear ratio is supposed to be 1.464. Were there any variations in gear ratios that aren't covered in the online parts manual?


Does anyone have any thoughts as to what could be going on here (apart from me having tossed $400 out the window)?
Click to expand...



Your numbers look correct.

What were your original tire sizes?


Any binding with old tires?
 
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