anyone running a 120/100x18

6 replies to this topic
  • waterdog3

Posted August 23, 2005 - 11:59 AM


I changed my rear tire the other day, Dunlop 739 desert AT, and man is the new tire a lot taller than the old stock dunlop. Anyone noticed that there steering charteristics changing a lot sense the rear end is higher now????

  • vmxr

Posted August 23, 2005 - 02:03 PM


Yep, a bit less stable especially in sand. But it turns nice.

  • black_n_blue_thumper

Posted August 23, 2005 - 07:44 PM


Does putting a taller rear tire on make the steering feel more stable or less stable. :D

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

Posted August 23, 2005 - 08:59 PM


Yes, the original was a 110/100-18, meaning 110 mm wide, sidewall is 100% of the width. When you replaced it with the 120/100, you not only got wider, but being as the second number is still 100, this means the sidewall is 100% of the width. If you wanted a wider tire, but not taller, you should of used the 120/90-18, just gotten wider, not taller. This will change your gearing. You will feel it, especially if you have been used to one thing already.

  • JTWR450

Posted August 24, 2005 - 11:05 AM


I run a 120/100 in a Kenda Carlsbad and love it. Granted I ride mountain single track and the taller and wider tire is working out well for me. I just bought another 120/100 in the same brand and make and will not be running the smaller tire again.

  • Joe Reitman

Posted August 24, 2005 - 01:43 PM


Does putting a taller rear tire on make the steering feel more stable or less stable. :D

Less- rear raises, fork rake (angle) decreases, as does trail. Bike turns better but twitchier at speed.

  • dirtr1der

Posted August 24, 2005 - 06:04 PM


Put a 120/100X18 on mine this year. Pirelli MT18. Love it. I didnt notice any difference in the steering or tracking of the rear end, but I also tuned my suspension so the bike rode way better this year from the suspension alone. Its a harder tire, so it does slip a bit more in the sand, but I was expecting that.


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.