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Tire Question
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Tire Question - January 29, 2008, 05:09 PM

Just need a little advice on sizing. My bike came with 120/65/17 on the front and 180/55/17 in the rear. What problems would i incur if i put a 120/60/17 on the front? i know its just a little bit shorter of a sidewall, but i dont want to throw off any kind of balance there may be in steering or other places. the reason i ask is because i found a good deal on a set of tires but it has a 60 side wall in the front instead of the 65.

thanks in advance for any help?


The East Coast Kid


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January 29, 2008, 05:22 PM

oh, and just an add on if you dont know me. i dont ride super hard, i may take a couple of corners at a decent speed every now and then, but i am by no means any kind of speed baller.


The East Coast Kid


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January 29, 2008, 05:26 PM

Better chance of bending a rim when you hit a pothole. Just get a 120/70.


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January 29, 2008, 05:29 PM

Quote:
Originally Posted by SVbadguy
Better chance of bending a rim when you hit a pothole. Just get a 120/70.
nice, that was an option for the deal as well. looks like its gonna be a 120/70/17 and 180/55/17 combo.

thanks.


The East Coast Kid


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January 29, 2008, 08:32 PM

Quote:
Originally Posted by SVbadguy
Better chance of bending a rim when you hit a pothole. Just get a 120/70.
+1
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February 28, 2008, 07:42 AM

The bike would also turn in faster with the front lower. Something that may not be good if you are not experienced enough. When i say turn in faster basically the bike will "fall" over faster than before. I think you are looking at a 1/2" diff in tire height and that would make a big difference in handling.

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February 28, 2008, 07:53 AM



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February 28, 2008, 08:11 AM

You will need to adjust the fork height to compensate for the sidewall.

Not hard, measure from the ground to a fixed point and write down the measurement.

Once the new tire is on, measure again and you'll know whether you need to drop or raise the forks.

If you put a shorter profile follow what N2Sport said, if you go with a higher profile you'll extend the geometry so you will need to compensate for that.


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