Advantage/Disadvanage of a 120 rear tire?

7 replies to this topic
  • klogeman

Posted March 24, 2013 - 04:01 PM


Just bought a 2009 YZ450F and need some new tires. What size is everyone running for rear tires? What makes one size better than the other? Turning ability? Traction? I ride MX with the occasional trail ride on some pretty rocky ground.

  • grayracer513

Posted March 25, 2013 - 06:16 AM


I run a 110/90x19. I don't like the heavy feel of the 120, or the fact that it encourages the front to push.

  • hackman162

Posted March 25, 2013 - 08:51 PM


I second gray's opinion. 110/90-19 for me too.

  • heaththemoose440

Posted April 01, 2013 - 09:56 AM


i ran a 120 on my 250x and it was good for trail riding. but i got 110s on my 450 and its comfortable everywhere

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  • DrNation86

Posted April 02, 2013 - 06:49 AM


The 110/90/19 is what i run on my 04 yz450f the 120 lessens the grip in ruts from other riders and make the bike push high in corners in my opinion.

  • cowboyona426

Posted April 02, 2013 - 07:00 AM


How about up front fellas... 80/100/21 vs 90/100/21?

  • grayracer513

Posted April 02, 2013 - 07:22 AM


I am ordering a Bridgestone 201 in 90/100x21 on the recommendation of a fellow desert racer. Application will be SoCal desert soils, which range from blow sand to hard pack alkali DG to rocks. I've tried a number of other tires and not been really thrilled with any of them. Currently using a Dunlop 952 in 80/100x21. I'll post in a new thread once I get enough time on the tire to evaluate it.

  • WYO522

Posted April 03, 2013 - 08:57 AM


If your stricly gonna race the bike then 110 is best, but if you are gonna do any kinda trail riding, climbing, or desert racing 120 is a better choice. I have found that most 120 tires have bigger lugs and deeper tread then smaller 110's. Just some food for thought.

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