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Old 02-09-2009, 09:38 AM   11 links from elsewhere to this Post. Click to view. #1 (permalink)
TalkofDC
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Default 120/70/17 vs. 120/60/17

There is a difference but what?

Will a 2nd Gen SV be able to handle a 120/70/17 tire? If so what type of handling differences?

A buddy has one that he bought for his R6 however and it only has 100 miles on it. He's giving it to me for $20. I only need a replacement tire until the end of winter (don't want a brand new set sitting in my garage on cardboard...when I'm only riding weekends now).

(going to Google until I see responses)
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Old 02-09-2009, 09:57 AM   #2 (permalink)
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70 has a higher profile. The 70/60 is based as a percentage of the width in this case 120mm.
Should you put it on, well you can it will fit, but I've never heard very good things about how a 60 profile tire performs. Mind you that's when you really push it. R6s were often criticized for coming with 60 fronts.

Oh wait the SV has the 60 correct? missed that. Yeah take the 70. If the the sv comes with a 60 stock there may be fender clearance issues. But perhaps not.
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Old 02-09-2009, 10:01 AM   #3 (permalink)
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The 120/60 is 72 mm tall while the 120/70 is 84 mm tall. This will raise the front end slow turn-in a bit. Will you notice? Not sure, but you could raise the front forks in the triple clamps to lower the front in order to compensate. Measure the fender clearance first.
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Old 02-09-2009, 10:28 AM   #4 (permalink)
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So it looks like putting this tire on would not be a direct swap...I should've have known better as rarely anything motorcycle related is ever single tasked. if you do this then you have to do that, that, and that....

1) Check Fender clearance...(the 60 aspect ratio is already close to fender)
2) Raise forks? Won't that effect my suspension.

I just wanted a gently used tire to replace my front so I could keep riding now without buying a new one so that I can replace the set in the summer...

I don't really know the difference between a slow turn in and a fast turn it per say....my only experience with this would be when my brother put takeoffs on my old bike it seemed like it tipped/almost fell very quickly on a counter steer input...a hell of alot faster than the older tires.....is this what you are referring?
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Old 02-09-2009, 10:40 AM   #5 (permalink)
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Quote:
Originally Posted by TalkofDC View Post
So it looks like putting this tire on would not be a direct swap...I should've have known better as rarely anything motorcycle related is ever single tasked. if you do this then you have to do that, that, and that....

1) Check Fender clearance...(the 60 aspect ratio is already close to fender)
Is there at least 3/4" inch clearance? If not, forget it. There's a reason why 120/60, 120/70, and even 120/65 tires are made.

Quote:
Originally Posted by TalkofDC View Post
2) Raise forks? Won't that effect my suspension.
Not really as you're putting the height where it was with the 120/60 tire.

Quote:
Originally Posted by TalkofDC View Post
I just wanted a gently used tire to replace my front so I could keep riding now without buying a new one so that I can replace the set in the summer...
Get a new front now and a new rear later. Not a big deal.

Quote:
Originally Posted by TalkofDC View Post
I don't really know the difference between a slow turn in and a fast turn it per say....my only experience with this would be when my brother put takeoffs on my old bike it seemed like it tipped/almost fell very quickly on a counter steer input...a hell of alot faster than the older tires.....is this what you are referring?
Yes, new tires with a new, round profile usually turn-in faster than worn, squared off tires. Slower turn-in is the opposite.
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Old 02-09-2009, 10:47 AM   #6 (permalink)
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I don't really want a new front now b/c I want to try out Pilot Powers (or Roads). I have Dunlaps so I gotta even out the wear on front and rear then get a new set. At $20 bucks for a tire with 100 miles on it is worth it....but I don't wanna have to go through the trouble of extra stuff to do if I don't have too. I'd just buy a new front or ride the one I have on it.


I understand new tires don't have a flat spot yet...but those take offs were really crowned compared to the stock tires before on the R6.

I don't know, I'm still confused about the whole thing. I think when I get confused about shit my only way to figure it out it to JUST DO IT. I'd only be using the tire from Now until May ish...so why not experience a different tire now for $20 than to buy a new one and not know...
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Old 02-09-2009, 10:52 AM   #7 (permalink)
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Should fit, lots of first gen SV owners put them on. It has a larger contact patch leaned over than a 60. So most of the guys doing it are for track use.
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Old 02-09-2009, 12:22 PM   #8 (permalink)
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The 70 will fit on the SV.. thats what I run on my 2005 SV and my friend runs on his 03. No problems at all.
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Old 02-09-2009, 12:24 PM   #9 (permalink)
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I was just about to ask this exact same question cause I'm looking at some new tires for my bike.

My stock size is 12/60 17 for the front and 160/60 17 for the rear. Right now I'm using take offs that are 110/70 front and 150/70 rear. I was trying to find my stock size take offs for this season, but the closest I could find was 120/70 front and stock size rear so I'm curious to see how these feel.
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Old 02-09-2009, 12:30 PM   #10 (permalink)
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Quote:
Originally Posted by bbentley40 View Post
The 70 will fit on the SV.. thats what I run on my 2005 SV and my friend runs on his 03. No problems at all.
Did you have to make any adjustments? Fender? forks?
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Old 02-09-2009, 12:34 PM   #11 (permalink)
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Quote:
Originally Posted by TalkofDC View Post
Did you have to make any adjustments? Fender? forks?
Nope.. direct fit for me and my friend.

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Old 02-09-2009, 12:38 PM   #12 (permalink)
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i did the conversion this winter. the 99-02 R6 came with a 60, so when it came time for a new front i went ahead and put on a 70 PP 2CT.

the fender was too short to safely run it. so i used a dremel to enlarge the holes and slide the fender up a couple centimeters. as for adjusting the suspension to compensate, other r6 owners told me that i'd be fine just the way it was, but i'm sure other bikes will respond differently to the taller profile.

turn-in is fantastic. the bike falls over (leans) almost effortlessly for me. but stability was definately compromised for myself. it took some getting used to for sure.
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Old 02-09-2009, 03:45 PM   #13 (permalink)
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yeah it looks like this will be an okay swap...and if nothing else it's only temporary till winter/spring runs out...
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Old 02-09-2009, 03:50 PM   #14 (permalink)
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It's also a *hell* of a lot more comfortable ride than a /60.

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