What's the difference in tire height

Wheels, hubs and tires
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03Roadking
Posts: 195
Joined: Wed May 04, 2005 4:17 pm

What's the difference in tire height

#1

Post by 03Roadking » Thu Mar 02, 2006 7:24 pm

Description: how much would it raise the front end of the frame

I was never good at math I have a 3.25 / 19 Avon on my 48 springer which is 4 over if I went to a 21" wheel how much would it raise the front end of the frame. Would it be 1 1/2 " ? with a 4 over front end would this put to much of an angle or tilt to the engine in a 56 ridged frame? I like the look of the 21" rim and I would like to lace one to the stock hub
What do you think?



RussW
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2007 Kaw. Vulcan 2000
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Re: What's the difference in tire height

#2

Post by RussW » Fri Mar 03, 2006 1:29 am

Check here for a comparison of Avon Speedmaster tires. http://www.avonmotorcycle.com/

Billy
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Re: What's the difference in tire height

#3

Post by Billy » Fri Mar 03, 2006 5:58 am

03-

Overall Diameter/O.D. = Total Height from ground straight to very top.

Avon Speedmaster AM6 (your 19" tire)
325-19 = O.D. = 25.9"

Avon Venom AM41 (the 21")
120- 21 = O.D. = 27.9"

Subtract:
>27.9"
- 25.9"
-------
= 2" taller O.D.
So, take 1/2 of that = 1" taller from ground, w/21" Tire..

Why = 1/2 of O.D. IS on top, & does NOT Affect Frame Height.

For a Visual Aide: roll 19" front wheel (only) on a 1" thick board, & Look closely @ the bikes 'stance'.
That Is just what it will set like..w/21" fr tire...
If that IS acceptable to your tastes: Go for it!!
Hope this helps ya..... ;D

03Roadking
Posts: 195
Joined: Wed May 04, 2005 4:17 pm

Re: What's the difference in tire height

#4

Post by 03Roadking » Sun Mar 05, 2006 2:48 am

Thanks Billy

Billy
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Re: What's the difference in tire height

#5

Post by Billy » Sun Mar 05, 2006 6:41 am

Well we all help each other........

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