Understanding ATV tire & Rim measurements - Honda Foreman Forums : Rubicon, Rincon, Rancher and Recon Forum
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post #1 of 13 (permalink) Old 07-13-2012, 10:23 AM Thread Starter
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Understanding ATV tire & Rim measurements

I found this online, it should come in handy for those who want to learn what to look for & how to buy aftermarket or stock, Tires & Rims.





ATV tire & Rim measurements:

ATV tires are commonly measured by Height x Width x Inner Wheel Diameter (HxWxID) in inches.
  • Term definitions:
  • Radial: Construction utilizes body ply cords that extend diagonally from bead to bead, usually at angles that range from 30 to 40 degrees. Plies are laid at opposing angles that form a crisscross pattern. Advantages: Allows entire tire body to flex which provides a smooth ride on rough surfaces. Disadvantages: Increased rolling resistance and less traction at higher speeds.
  • Biased: Layers of ply cords extending to the beads of the tire are laid at approximately right angles to the direction of travel. Advantages: Longer tread life, better steering control, lower rolling resistance. Disadvantages: Stiffer ride at low speeds on rough roads. Lower grip ability at low speeds.
ATV Wheel sizing and Offset

To determine the diameter of a wheel: Measure the width of the bead area of the wheel (not the outer rim). In the diagram above, the diameter measures 12 inches.
To determine the offset and width of a wheel: Measure from the center weld to the center of the tire bead area on both sides of the wheel. The outer measurement will be the one with the valve stem. The offset of a wheel is stated by reading the measurement of the inside first, then the measurement of the outside (valve stem side). For example: In the diagram above, the offset is 5+2; meaning the inside half of the wheel measured 5 inches, and the outside (valve stem side) measured 2 inches. Add these 2 numbers together to find the total width of the rim (7 inches).
Note: If the rim has a tire on it, usually the tire will have the rim diameter imprinted on it (8", 9", 10"...). You can also measure the rim from inside using the diagram above and getting the measurements as close as possible.






I found this online it should come in handy for those who want to learn how to buy aftermarket or stock tires & Rims
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post #2 of 13 (permalink) Old 07-16-2012, 01:11 PM
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That should be helpful.

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post #3 of 13 (permalink) Old 07-16-2012, 05:36 PM Thread Starter
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Thanks.


P.M. Campbell Co Lodge F&AM #778
99Yamaha Wolverine
06 Foreman TRX500
09 Foreman TRX500 "Trail Dancer"
25" Big Horn's
Mad Dog Rear Bag
Body Armor
Bash Plate
Gamin 76CSx GPS, W/RAM Mount
Warn XT25 conversion to XT30
Glide Build Audio System
Serious case of BGD

I'm not Frugal, I'm a COB...(Cheap old [email protected])




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post #4 of 13 (permalink) Old 08-18-2012, 11:41 PM
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Im looking at some black mambas now the ones im looking at are 27x10-12. the tires i have now the fronts are 26x10-12 and the backs are 26x12-12. to get the black mambas will i have to change rims or what any help is greatly appreciated
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post #5 of 13 (permalink) Old 08-18-2012, 11:58 PM
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Quote:
Originally Posted by michael_tucker13 View Post
Im looking at some black mambas now the ones im looking at are 27x10-12. the tires i have now the fronts are 26x10-12 and the backs are 26x12-12. to get the black mambas will i have to change rims or what any help is greatly appreciated
No, a 7" rim will handle 12" wide tires with no problems.

However, alot of guys on here including myself would tell you to stay away from the mambas unless you have a pretty big gear reduction. They are extremely heavy!




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post #6 of 13 (permalink) Old 08-19-2012, 04:40 AM Thread Starter
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Quote:
Originally Posted by h22ate View Post
No, a 7" rim will handle 12" wide tires with no problems.

However, alot of guys on here including myself would tell you to stay away from the mambas unless you have a pretty big gear reduction. They are extremely heavy!

<<<<<what he said


P.M. Campbell Co Lodge F&AM #778
99Yamaha Wolverine
06 Foreman TRX500
09 Foreman TRX500 "Trail Dancer"
25" Big Horn's
Mad Dog Rear Bag
Body Armor
Bash Plate
Gamin 76CSx GPS, W/RAM Mount
Warn XT25 conversion to XT30
Glide Build Audio System
Serious case of BGD

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post #7 of 13 (permalink) Old 11-14-2013, 10:15 AM
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Does anyone know where to find stock Honda rim sizes? I forgot to check what size rims the wifes 2004 Foreman 450 have and I am already at work haha.
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post #8 of 13 (permalink) Old 11-14-2013, 12:15 PM Thread Starter
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Quote:
Originally Posted by Dave P View Post
Does anyone know where to find stock Honda rim sizes? I forgot to check what size rims the wifes 2004 Foreman 450 have and I am already at work haha.
Tires
25X8X12 -Front
25X10X12 -Rear

Rims
12X 6.0 AT
12X 7.5 AT

Sorry you asked for Rim size not tire....LOL



P.M. Campbell Co Lodge F&AM #778
99Yamaha Wolverine
06 Foreman TRX500
09 Foreman TRX500 "Trail Dancer"
25" Big Horn's
Mad Dog Rear Bag
Body Armor
Bash Plate
Gamin 76CSx GPS, W/RAM Mount
Warn XT25 conversion to XT30
Glide Build Audio System
Serious case of BGD

I'm not Frugal, I'm a COB...(Cheap old [email protected])




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post #9 of 13 (permalink) Old 07-29-2015, 02:25 AM
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I have a 2007 500 foreman, I recently put 29.5" terminators on it well since then i have put 3 u joints in the bike, can anyone tell me why? Don't get me wrong I don't want to sound dumb I know the tires are big but the bike turns them over great I can burn them down on asphalt.. I'm just curious on why it keep poping u joints... any help is greatly appreciated!
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post #10 of 13 (permalink) Old 07-29-2015, 10:10 AM
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because the u-joint wasn't designed to take the abuse you are throwing at it .......throw a gear reduction in it and that might help .......them terms are heavy man

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