4720 Tire Help

[sikmusicfreak8]

My used 2005 4720 came with R4 OTR tires: 10-16.5 on the front, and 420/70-24 on the rear. Front tires are pretty well worn out. Manual says fronts should be 12-16.5 and rears 17.5-24. Seems my tire sizes are mismatched maybe?? From what I can tell a 17.5-24 is roughly 49" diameter, and the 420/70 this tractor came with is only equal to a 16.9-24. Does that sound right? If I put the 12-16.5 on the front, my tires are going to be fighting each other wont they? Probably why the fronts are wore out and backs look good right now?

 

[PapeCAT]

Sounds mismatched, I always wondered about this. If you travel straight on concrete or paved road does the 4wd bind and the lever get stuck and hard to put in 2wd? If so, do you have to reverse to be able to shift out of 4wd?

 

[claggstractors]

Depends on the particular tire package that it was ordered with. The combination you have is one of the many that is correct for that model. If I remember right you have what was called the IND10 package on the dealer price list. Was used on the 2810 up to 3510 models. Been selling Bransons for 13 years now and the only time we have replaced a rear tire was due to a puncture. Finally getting some with rears needing to be replaced due to wear. Have replaced too many sets of front tires to remember how many.

 

[sikmusicfreak8]

Funny you chimed in, my backhoe has your dealer sticker on it!

After looking at a newer sheet, I do see the IND10 sizes match. Can you go with the larger sizes no problem? And since I believe its only the width on the fronts, I went ahead and ordered 12x16.5 fronts, I hope that wont be an issue?

Also, as far as I know, my 2005 does not have the option to disengage 4wd correct?

 

[claggstractors]

Wow, amazing how far equipment travels. The 12x16.5 will be taller. Sidewall height is determined by width x aspect ratio. Dont remember what the aspect ratio is off the top of my head but will be taller. Like the old 7.50 - 15 used on half ton pickups decades ago, aspect ratio isnt on the sidewall. Yes you can disengage the front wheel assist. Want to say its the second lever from the left behind your feet, under the seat, as your sitting on it.

 

[DavesTractor]

Funny you chimed in, my backhoe has your dealer sticker on it!

After looking at a newer sheet, I do see the IND10 sizes match. Can you go with the larger sizes no problem? And since I believe its only the width on the fronts, I went ahead and ordered 12x16.5 fronts, I hope that wont be an issue?

Also, as far as I know, my 2005 does not have the option to disengage 4wd correct?

You have the 2810/3510 tire package on your unit. Not normal for the larger tractor, but it was an option for guys wanting to stay more low profile. I'd suggest that you stay with the 10x16.5 fronts to keep the ratios correct.

Yes you can disengage 4wd, it's just a lever.

 

[sikmusicfreak8]

I do see that now, I was wondering what that lever did. Odd sticker.

Dave, would the IND25 package fit the same rims as the IND10? 12-16.5 and the 16.9-24?

If so, maybe Ill just order the rears and install those.

 

[sikmusicfreak8]

And I stand corrected, its the IND20 package I have, not the IND10. Just wondering at this point if I can run the IND25 on the same rims the IND20 came on.

 

[claggstractors]

Yep, finally checked at work today and had forgot how small the old IND10 where. IND25 rear is 16.9 x 24. 420/70x24 is same width lower profile.

 

[sikmusicfreak8]

Perfect, I think I will upgrade then. Fronts are already here and are 12x16.5. I think I could sell my rears for almost half the cost of the new ones, so its a win win.

Thanks guys.

 

[claggstractors]

Awesome, glad to help. Be safe enjoying the extra ground clearance and traction.

 

[DavesTractor]

And I stand corrected, its the IND20 package I have, not the IND10. Just wondering at this point if I can run the IND25 on the same rims the IND20 came on.

IND10 uses a 15" front rim and a 20" rear rim.
IND20 is 10x16.5 front and 420/70x24 rear tire.
IND25 is 12x16.5 front and 16.9x24 rear tire.

The IND25 front rim appears to be an inch wider than the IND20 front. The rear rims measure out the same, a 15" wide rim that takes a 24" tire. You will have a stamp on your rim somewhere noting 24xW15L or something like that. The rear rims on the IND25, while measuring the same as the IND20 rears, are of a different design where the wheel center bolts to the rim. However, that should not matter. And I do not know why they do that.

So the long answer is that you could swap out the IND25 rear tires onto your IND20 rear rims. But you should get a wider front rim. That being said, it might work fine. A narrow rim will make the effective rolling radius of the tire larger, but I doubt by much. Officially, change the front rims. Would I change the front rims myself? I'd try it first.

By the way, we carry 2" rear wheel spacers that fit all 15/20 series Bransons. On the 15 series and the 3520, the rear rims are not adjustable and things are pretty tight back there, especially with a backhoe. This solves that. Not applicable to you, but it sort of goes with the Branson tire/wheel discussion.

 

[Omega Woods]

On the 15 series and the 3520, the rear rims are not adjustable and things are pretty tight back there, especially with a backhoe. This solves that. Not applicable to you, but it sort of goes with the Branson tire/wheel discussion.

Hey, Dave. I have a 4520, how hard is it to move the rims out? I read the manual but it doesn't seem clear to me what the procedure is.

Thanks!

 

[DavesTractor]

Hey, Dave. I have a 4520, how hard is it to move the rims out? I read the manual but it doesn't seem clear to me what the procedure is.

Thanks!

It's simple enough, but the outer bolts are often really tight and the tires are heavy. There are 8 possible symmetrical positions. Essentially you can have the wheel center on the front or back of the rim lug, and that changes things by a couple of inches. Then you can have the center dished out or in. That gives us 4. Then the rim can be spun around (rim lugs are not on the centerline on purpose) and that gives you 4 more. Simple design.

 

[Omega Woods]

It's simple enough, but the outer bolts are often really tight and the tires are heavy. There are 8 possible symmetrical positions. Essentially you can have the wheel center on the front or back of the rim lug, and that changes things by a couple of inches. Then you can have the center dished out or in. That gives us 4. Then the rim can be spun around (rim lugs are not on the centerline on purpose) and that gives you 4 more. Simple design.

Yes, I see now with your description and the owner's manual. Thank you.

 

[sikmusicfreak8]

Interesting, wondering if I will need to adjust my rims then with the larger tires?