What size tube do I need for a 3.00-21 tire?


10 replies to this topic
  • bellinoracing

Posted February 04, 2010 - 10:25 PM

#1

Does anyone know what size tube I need for a 3.00-21 front tire? I have spent over an hour looking and I can for the life of me figure it out. Also I read the heavy duty tubes are for off road applications only. It will be going on a DRZ400s that stays mainly on the street and I just want it to be a safe as possible. Is a heavy duty tube a good or a bad idea? My old tube is probably fine but I dont want to take any chances losing the front tire at high speed so I think I will just break down and get a new tube as well.

Thanks, Jon

  • SMarquez

Posted February 04, 2010 - 11:04 PM

#2

Whatever the standard 21" tube is out there. 100/90 or whatever. All the tire sites have conversion charts.

  • NEKOOHC

Posted February 04, 2010 - 11:09 PM

#3

21-CH is the part # for a michelin heavy duty tube 3.00-21

or ask for a tube to suit 3.00-21 tire

  • ScootMcGoot

Posted February 05, 2010 - 06:21 AM

#4

Does anyone know what size tube I need for a 3.00-21 front tire? I have spent over an hour looking and I can for the life of me figure it out. Also I read the heavy duty tubes are for off road applications only. It will be going on a DRZ400s that stays mainly on the street and I just want it to be a safe as possible. Is a heavy duty tube a good or a bad idea? My old tube is probably fine but I dont want to take any chances losing the front tire at high speed so I think I will just break down and get a new tube as well.

Thanks, Jon


You want to look for one of the following

Metric

80/100-21

Imperial Measurements

3.00-21

  • bellinoracing

Posted February 05, 2010 - 09:44 AM

#5

You want to look for one of the following

Metric

80/100-21

Imperial Measurements

3.00-21


Oh Ok, all I seen before was metric tubes and thats what was confusing me. Thanks just ordered the tube and tire

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • Chas_M

Posted February 05, 2010 - 12:14 PM

#6

Doesn't make a hill of beans difference either way.

  • ScootMcGoot

Posted February 05, 2010 - 02:19 PM

#7

Oh Ok, all I seen before was metric tubes and thats what was confusing me. Thanks just ordered the tube and tire


No problem :ride:

  • XTWarrior

Posted February 16, 2010 - 05:08 PM

#8

To bring this back, I was wondering; Is that 80/100 measurement applicable to the actual tire itself?

I'm asking because I am browsing tires and my fronts call for a 3.00-21 but then there are other tire option such 90/90-21 or 120/70-21 which i was wondering if could work. The rim itself is a 1.60-21 with the 3.00-21 tire on it.

Thanks :ride:

  • XTWarrior

Posted February 17, 2010 - 09:12 AM

#9

I can't seem to find crossreference lists of this, if anyone could help that'd be much appreciated :ride:

  • ScootMcGoot

Posted February 17, 2010 - 02:25 PM

#10

To bring this back, I was wondering; Is that 80/100 measurement applicable to the actual tire itself?

I'm asking because I am browsing tires and my fronts call for a 3.00-21 but then there are other tire option such 90/90-21 or 120/70-21 which i was wondering if could work. The rim itself is a 1.60-21 with the 3.00-21 tire on it.

Thanks :ride:


Here is how the tire sizes work.

80/100-21 means that the tire is 80mm wide and the sidewall is 100% of the width so it is also 80mm

90/90-21 would be a 90mm wide tire with a 81mm sidewall

120/70-21 would be a 120mm wide tire with a 84mm sidewall

Also...

3.00-21 directly converted would be 76/100-21 but that is not a real size. It would be a 80/100-21

  • XTWarrior

Posted February 18, 2010 - 07:41 AM

#11

Here is how the tire sizes work.

80/100-21 means that the tire is 80mm wide and the sidewall is 100% of the width so it is also 80mm

90/90-21 would be a 90mm wide tire with a 81mm sidewall

120/70-21 would be a 120mm wide tire with a 84mm sidewall

Also...

3.00-21 directly converted would be 76/100-21 but that is not a real size. It would be a 80/100-21



Gotchya, thanks a bunch!





Related Content

Forums
Photo

Rmx250 vs ktm 200 exc by oldo95


Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • 12 replies
Forums
Photo

Kx 250f vs yz 250 vs yz125 by kxrider1001


Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • 9 replies
Forums
Photo

15 crf450 vs 15 yz450 by Emkjr93


Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • 10 replies
Forums
Photo

Pressure Washing Your Ride ? by Oldmossyspokes


Dirt Bike   Make / Model Specific   Honda   CRF250 L/M   CRF250 L/M FAQ
  • 0 replies
Forums
Photo

2014 Baja 1000 Rumors by NewMexican


Dirt Bike   Dirt Bike Regional Discussion   Baja
  • Hot  86 replies
 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.