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post #1 of 10 (permalink) Old 11-26-2007, 07:14 PM Thread Starter
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Tire Question

Found a great deal on some tires the only thing is the front tire is a 120/60 and i`m recommended at a 120/70. Can i and should i go with the 120/60???
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post #2 of 10 (permalink) Old 11-26-2007, 07:20 PM
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Quote:
Originally Posted by chris_491 View Post
Found a great deal on some tires the only thing is the front tire is a 120/60 and i`m recommended at a 120/70. Can i and should i go with the 120/60???
I wouldnt.
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post #3 of 10 (permalink) Old 11-26-2007, 07:33 PM
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Only if you like big explosions, narly gooey stuff, and racy photos of Star Jones.

In reality, I don't know what would happen, but that sentence sounded cool in my head when I saw your question, so I went with it.

2005 Honda CRF88RR - 2007 Honda CBR600RR
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post #4 of 10 (permalink) Old 11-27-2007, 06:35 AM
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You'll have a slightly lower profile tire. It will affect the handling of your bike. It wont hurt anything on the bike though.
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post #5 of 10 (permalink) Old 11-27-2007, 10:42 AM
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This is actually a math question that starts out easy then goes to crap. The 120/70 tire's height is 70% of 120, or 84mm. The 120/60 tire is 60% of 120 or 72mm. That means the axle is 12mm lower to the ground with the 120/60 tire. But that also changes the rake or angle of the forks, and the trail. Plus, it also brings in algebra and I'm not going there.

But to save a few bucks, you have altered the height of the triple clamps, the rake, and the trail of your bike. Something that engineers have spent tons of time, calculations, and tests to get a good handling bike. Do you want to change that?
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post #6 of 10 (permalink) Old 11-27-2007, 01:06 PM
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long story short, i did this on my zix when i first changed to pp, didnt make that much differance, and it wasnt anything i noticed after about 20 seconds



"It takes alot of anything to make my bike to something"
2001 RC51
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post #7 of 10 (permalink) Old 11-27-2007, 01:37 PM
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long story short, i did this on my zix when i first changed to pp, didnt make that much differance, and it wasnt anything i noticed after about 20 seconds
You did crash the Zix after that though didn't you?
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post #8 of 10 (permalink) Old 11-27-2007, 01:40 PM
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nm, i went the other way, from a 60 to a 70



"It takes alot of anything to make my bike to something"
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post #9 of 10 (permalink) Old 11-27-2007, 02:14 PM
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Originally Posted by Rider View Post
You did crash the Zix after that though didn't you?
yeah 8k miles later



"It takes alot of anything to make my bike to something"
2001 RC51
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post #10 of 10 (permalink) Old 12-06-2007, 02:57 PM
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You forgot to mention the deformation properties of a lower profile tire.The lower the profile the les deformation can occurr.... But you already knew that....
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