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Old 07-10-2013, 08:23 PM   #1
dwj - Donnie OP
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!9" Front and 18" Rear

I see when most of the folks go to a 19" front tire on the ADVs, they also change the rear to a 17". Why? I had an accident in Mexico and my front rim is being repaired to get me home. Once home, I will need to get a permanent repair. I would prefer a 19" front, but do not understand the need for changing the rear. Please educate me on this! Thanks!
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Old 07-10-2013, 08:54 PM   #2
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Old 07-10-2013, 09:27 PM   #3
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Going from 21/18 to 19/17 keeps the geometry the same. YMMV
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Old 07-10-2013, 10:42 PM   #4
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I have tried it both ways . . . A 19" front worked fine with the 18" rear for me . . . Could not tell the difference. The 17" rear has more tire choices . . . Especially for street tires.

I may do the same thing with my current bike. I really liked the 19" Distanzia front tire. Wears well and works great in the curves.
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Old 07-11-2013, 09:57 AM   #5
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Does the 19/18 after the height/rake/trail and all those other things I don't know much about? I assume I could use Goop to make the 19 tubeless like I did with my 18 rear.
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Old 07-11-2013, 10:10 AM   #6
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17 rear = better tire choices
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Old 07-13-2013, 04:23 AM   #7
-GUV-
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19 18

leaving the 18 rear does make the bike drop into corners incredibly easy, I had to drop the forks through the triple clamps (raise the front) to slow it down a little. I now am finding that the rear pilot road 3 lets go powering out of corners probably due to a smaller contact patch, it's not a very pointy tyre so the further over you lean the narrower the contact, I don't think that there would be a stickier 18 to fit the Adv so I have been contemplating going to 17 for the endless tyre choice.


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Old 07-13-2013, 07:17 AM   #8
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Originally Posted by -GUV- View Post
leaving the 18 rear does make the bike drop into corners incredibly easy, I had to drop the forks through the triple clamps (raise the front) to slow it down a little. I now am finding that the rear pilot road 3 lets go powering out of corners probably due to a smaller contact patch, it's not a very pointy tyre so the further over you lean the narrower the contact, I don't think that there would be a stickier 18 to fit the Adv so I have been contemplating going to 17 for the endless tyre choice.


-GUV-
I do Adventure traveling, so I would still stay with Scout or the OEM type tires.
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Old 07-13-2013, 02:10 PM   #9
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Quote:
Originally Posted by dwj - Donnie View Post
I do Adventure traveling, so I would still stay with Scout or the OEM type tires.
Adv touring they might be okay but for higher speed sealed roads both of those just don't cut it.
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Old 07-13-2013, 06:09 PM   #10
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Quote:
Originally Posted by dwj - Donnie View Post
I see when most of the folks go to a 19" front tire on the ADVs, they also change the rear to a 17". Why? I had an accident in Mexico and my front rim is being repaired to get me home. Once home, I will need to get a permanent repair. I would prefer a 19" front, but do not understand the need for changing the rear. Please educate me on this! Thanks!
If you search long enough, you'll find there are plenty of us with the 19/18 combo. Tire choices are a bit limited, but a 160/70/18 is relatively available in street tires, or you can keep using mefos and scouts and scorpion tires. Handling is great, tubeless radials on the front are great. If the front end is too soft for you (it was for me), this exacerbates the problem, so you should put stiffer springs and valving in.
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Old 07-13-2013, 06:37 PM   #11
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Originally Posted by slackmeyer View Post
If you search long enough, you'll find there are plenty of us with the 19/18 combo. Tire choices are a bit limited, but a 160/70/18 is relatively available in street tires, or you can keep using mefos and scouts and scorpion tires. Handling is great, tubeless radials on the front are great. If the front end is too soft for you (it was for me), this exacerbates the problem, so you should put stiffer springs and valving in.

Thanks!
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