Front tire size on 2011 YZ450?

3 replies to this topic
  • Steve 396

Posted December 18, 2013 - 04:11 PM


I have a 2011 yz450 and have tried a few combinations to get the front to not push in the corners and have gotten it better in the almost 2 years I have owned it.  I have tried the 80/100/21 that came on it and currently have a mx 51 90/100/21 that I am going to refreash.  But....  My local shop doesn't have one in stock and says they are not available anymore as if they have discontinued them (parts unlimited I think).  They have the 80/100/21 and also have a 90/90/21.  Has anyone run this new size front tire on this bike?  I want something that turns better for me than the stock 80/100/21.  I have had the forks revalved and have tried moving the forks up and down in the triple camps.  I have been fairly satisfied with the 90/100/21 but can't get it apparently.  So, what do you think about the new size?






Posted December 20, 2013 - 06:50 AM


try one of these --- it can only help.



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  • grayracer513

Posted December 20, 2013 - 07:40 AM


It may help if it's soft ground he's running on.  The MS3 is not suited to anything hard.


I run the Bridgestone 203 in 90/100x21 in the SoCal desert (a mix of almost everything except loam, and not very much mud) and it works better than what I've previously used. 


OP: The difference between a 90/90 and a 90/100 is that the 90/90 is slightly shorter vertically at the same width.  One should be about like the other if the MX51 works for you.

  • stroker101

Posted December 23, 2013 - 02:59 PM


i recently installed a Bridgestone 403 90/100x21 on my 2011 YZ450F and really like the way it handles

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