Rolling Circumferece: Tractor Tires  -- Tractor Maintenance Discussion Forum and Review Rolling Circumferece: Tractor Tires -- Tractor Maintenance Discussion Forum

  parts   |   manuals   |   discussion   |   photos   |   podcast   |   reviews   |   specs   |   dealers   |   classifieds   |   contact   |   faq   |   myProfile   |   home          Login Now | Sign Up


FAQ:   What is a tractor?

Forum Index

Kubota Tractors
  Kubota News
  Kubota Price
  Kubota Review
John Deere Tractors
  John Deere News
  John Deere Price
  John Deere Review
New Holland Tractors
  New Holland Tractor Price
  New Holland Tractor Revie
Other Tractor Brands
  Articulated Tractors
  Belarus
  Bobcat Tractors
  Case
  Cub Cadet
  Hinomoto
  Kioti Tractor
  Long
  Massey Ferguson
  Mitsubishi
  Other Tractor Brands
  Other Tractor News
  Shibaura
  Yanmar Tractors
Lawn and Garden Tractors
  Craftsman
  Cub Cadet Garden
  John Deere Garden
  Kubota Lawn Garden
  Other Garden Tractors
  Simplicity
  Toro Wheelhorse
  Ventrac Lawn Tractors
Antique Tractors
  Allis Chalmers
  Case David Brown
  Farmall IHC
  Ford
  Ford 9N 2N 8N
  Fordson
  Harry Ferguson
  John Deere Older
  Massey-Harris Ferguson
  Minneapolis Moline
  Oliver Cletrac Cockshutt
  Restoration
  Tractor Pulling
Tractor Attachments Implements 3ph
  Back Hoe
  Field Mowers Brush Cutter
  Grooming Mowers Finish Mo
  Loaders
  Snowblowers / Snow Plows
  Tillers and Ploughs
  Tractor Implements
  Trenchers
  Wood Chippers 3PH
Tractor Maintenance
  Diesel Fuel Lubrication E
  Tractor Engine Repair Reb
  Tractor Tires
Utility ATV
  All Terrain Vehicles
  John Deere Gator
  Mule Utility Vehicles
General Tractor
  Farming Ranching Agricult
  Photo Contest
  Size Tractor Needed
  Tractor Projects
  Tractor Safety
  Welding
Chinese Tractors
  Jinma Farmpro Agracat
  NorTrac Tractors
  Other Chinese Tractors
Cars
  All Brands
  Audi VW
  BMW
  Car Tires and Maintenance
  Chrysler
  Exotic, Sports, Racing
  Ford Cars
  General Motors
  Honda
  Hyundai
  Mercedes
  News
  Nissan
  Subaru
  SUV and Trucks
  Toyota Cars
Trucks Trailers
  Chevy Pickup Trucks
  Dodge Pickup Trucks
  Ford Pickup Trucks
  Toyota Pickup Trucks
  Chevy Pickup Trucks
  Dodge Pickup Trucks
  Ford Pickup Trucks
  Toyota Pickup Trucks
Home Building
  Alternate Electric Energy
  Barns Pole Barns
  Buying Ranch Farm Acreage
  Carpentry
  Contractors
  Electric
  Excavation
  Moldings Finish Trim
  Other Home Building
  Pellet Stoves
  Plumbing
  Wood Stoves
Tools
  Electirc Power Tools
  Gas Power Tools
  Generators
  Shop Tools
  Techniques Howto
Landscape
  Flowers Shrubs Garden
  Golf Course Maintenance
  Irrigation Systems
  Landscape Design
  Landscape Lighting
  Landscape Maintenance
  Lawn, Turf, and Grass
  Vegetable Gardening
Construction
  Caterpillar
  Komatsu
  Wheel Loaders
Current Events Health Happiness
  Current Events
  Dogs and other Pets
  Electronics And Computers
  Food
  Health
  Just For Fun Off Topic
  Movies Music Games
  Personal Finance Investme
  Sports Outdoors
Tractorpoint Site
  Member Photos
  Site Members
  Website Operations Howto


New As Posted | Active Subjects



Click to Post a New Message!

Discussion Boards > Active Subjects > Messages as Posted > Tractor Tires Forum

Page [ 1 ] |
Reply | Pop Up Window Reply | Add PhotoAdd Photo
 11-16-1999, 00:00 Post: 10161
Todd



Join Date:
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1

4
Filter by User
 Rolling Circumferece

Is there any one out there who knows the formula to determine the rolling circumference of a tire? I'm looking to go to smaller turf tires on my 4wd tractor and need to make sure I'm keeping the front/rear ratios the same. Unfortunately it's not as easy as taking the diameter and multiplying by 3.1416.Any help?






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-16-1999, 00:00 Post: 10163
Jack in IL



Join Date:
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1

2
Filter by User
 Rolling Circumferece

You can look up the rolling circumference in tire data books such as those provided by Goodyear, Firestone, etc.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-17-1999, 00:00 Post: 10178
Todd



Join Date:
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1

4
Filter by User
 Rolling Circumferece

Wish it were that easy. Unfortunately it's not listed for the smaller rear turfs as well as the fronts. Any one else know the formula?






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-17-1999, 00:00 Post: 10193
scott



Join Date:
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1

2
Filter by User
 Rolling Circumferece

on hard surface mark tire and surface roll tire 360 degrees or one full revolution. mark hard surface then measure distance beteen the lines. same for front or rear.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-18-1999, 00:00 Post: 10198
Todd



Join Date:
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1

4
Filter by User
 Rolling Circumferece

Why is this so difficult? Let me try again...

1. I want to replace my exiting turf tires to reduce the height of the tractor. 2. I need to keep my front/rear tire rolling circumference the same ratio to maintain the positive slippage on the 4wd tractor.
3. Although most tire manufacturers list rolling circumference for "larger" tires, few smaller rear turfs, and no smaller sized front turfs have a rolling circumference listed in any literature I have seen, (Firestone farm tire data book).
4. As such, I am attempting to get the formula to determine the rolling circumference for tires.
5. Since I am looking for the "right" sized replacements and don't already have the "yet to be determined" tires that I will replacing the existing tires with I can not measure them the old fashioned way, (by marking the tire and driving one complete revolution and then measuring the distance).

Can anyone help with the formula or a literature source that will include the r/c for smaller turf type tires?

Thanks again






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-18-1999, 00:00 Post: 10202
Roger L.



Join Date: Jun 1999
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 0
 Rolling Circumferece

Why so difficult?? Well, at least you are ahead of the game by knowing that it is important to match revolutions of the front and rear driveshafts. Although sometimes this match is not one to one....it depends on how the shafts are driven of course. Yes, the information is hard to find on some tires. I've had the same problem. And yes, the circumference is not pi*diam. on a tire because it deforms as it compresses. Worse, the deflection will vary with load and with air pressure! Also, you are not going to be able to exactly match your existing ratio. So what are you willing to accept in percentage mismatch? I'll guarantee that if you compare the ratio of the tires you have on there now with
the drive ratios (drive shaft drive and differential gears) by counting the gear teeth that you will find that you already have some mismatch.
I can help you with this or at least provide a sounding board. First thing you need to do is measure the rolling circumference as Scott suggested and then count the gear teeth. What do you get for existing mismatch??






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-18-1999, 00:00 Post: 10207
Jack in IL



Join Date:
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1

2
Filter by User
 Rolling Circumferece

The "formula" for rolling circumference for Ag Tires (R1) can be found in the Engineering Handbook provided by the Tire and Rim Association. It is not "simple." The book has to be ordered from TRA and is most often used by vehicle engineers. The Firestone Farm Tire Book doesn't list RC data for the small turf tires you are seeking because as of now Firestone doesn't produce them. They are listed in the Goodyear Handbook which you can pick up at any Goodyear Farm Tire Dealer. (That one book includes agricultural tires plus terra-tires and turf-tires that Goodyear offers.) The turf sizes listed go down into the range of lawn and garden tractor sizes which are smaller than you would probably want on refitting a compact tractor. I think this is your best source for easily getting the data you want. When making the final selection of front and rear tires, you want the theoretical travel speed of the front to lead the rear by about 1-3%.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 11-18-1999, 00:00 Post: 10228
scott



Join Date:
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1

2
Filter by User
 Rolling Circumferece

try titan tire.they have an 800 # on there web site.i called it when i changed from turf to r4.to get spec info. i am not sure of your reason to go smaller but i can tell you it will ride rougher






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
 12-01-1999, 00:00 Post: 10556
Todd



Join Date:
Location:
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster
Posts: 1

4
Filter by User
 Rolling Circumferece

Thanks for the information on obtaining rolling circumference figures for smaller sized turf tires. I have actually determined that I can use a 315/75-16 truck tire to obtain the diameter & r/c I need without having to downsize the rim to the 15 inch. My reason to go smaller is for a high density apple orchard. With the tight planting I don't have much room in the rows so both narrow and short is better.

Thanks again.






Reply to PostReply | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo




Bookmarks: Digg It | Del.icio.us |
Reply | Pop Up Window Reply | Add PhotoAdd Photo


Page [ 1 ] |

Discussion Boards > Active Subjects > Messages as Posted > Tractor Tires Forum

Thread 10161 Filter by Poster:
Jack in IL 2 | Roger L. 1 | scott 2 | Todd 4 |

 (advanced search)

Picture of the Day
videorov

Belarus - How do I get this part off the tractor so I can install a new one
How do I get this part off the tractor so I can install a new one


Unanswered Questions

Belarus 825 - needs a new clut
Drain Cock
Need more hydraulic flow for s
HINOMOTO HB 501
Belarus 420A - Problems bleed

Active Subjects

460 Long hyd leak
460 axle
Key will not start engine
6x4 engine rebuild vsHarbor Fr
Things we say and what do they
The Plus and Minus of Ignoring
Looking to buy a New Pickup Tr
Need more hydraulic flow for s


Hot Topics

Tractor Category 1 2 3 Hitch s
Duerr hp 678 Chipper replaceme
Gator 620i gas in engine oil
KUBOTA Tractor Trouble Free Qu
Gator 6x4 Overheating problem
Duerr hp 678 Chipper Manual
Adjusting 7308 Pressure Relief
Long 460 hydraulic problem


Featured Suppliers

Mountain Creek Labradoodles
      MountainCreekLabradoodles.com





New Forums on Gun Sport Shooting and Hunting -- BarrelPoint.com  New Forums on Horses ManePoint.com
Talk Horses at ManePoint
Hunting + Gun Sports at BarrelPoint



Most Viewed

+ Filling rear tractor tires with antifreeze
+ Tractor Tire sizes - what do those numbers mean
+ I hate my R4s part II
+ Valve stem trouble on calcium filled tires
+ AG vs Industrial tires
+ Galaxy tires
+ Tire Chains
+ Rubber Tire Chains
+ foam filled turf tires pros and cons
+ Turf or R4 tires for snow

Most Discussion

+ I hate my R4s part II
+ Filling rear tractor tires wit
+ Tire Chains Revisited
+ mixed R4 tires and PSI
+ R4 tire tears scuffs turf lawn
+ Chains The Further Adventures
+ Average life span for turf tir
+ More tire chain questions
+ checking air pressure
+ Water Filled Tires

Newest Topics

+ 5100 front tires
+ 5100 front tires
+ Tractor Loaded Tires Short Weight
+ CubCadet 7532 Front Tire wheel change
+ Ford 2120 Rear Rims
+ TIRE WEIGHTS
+ Tire Chains and Tensioners
+ Studding Tires
+ Rubber Tire Chains
+ Load tires to stop leaks
















Turbochargers for Tractors and Industrial Machines
Cab Glass for Tractors and Industrial Machines

Alternators for Tractors and Industrial Machines
Radiators for Tractors and Industrial Machines

Driveline Components for Tractors and Industrial Machines
Starter Motors for Tractors and Industrial Machines