ADVrider

Go Back   ADVrider > Gear > The Garage
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-04-2013, 01:01 PM   #16
CycleDoc59
Wrench Rider
 
CycleDoc59's Avatar
 
Joined: May 2006
Location: East Virginia
Oddometer: 857
Quote:
Originally Posted by duck View Post
Not exactly true. Going from an 80 to 90 aspect ratio means the 90 tire is 12.5% taller than an 80.

(90-80)/80

A 110/80-18 tire has a diameter of 24.91 inches.

If a 110/90-18 tire were 12.5% taller, it would have a
diameter of 28 inches, which is over 3 inches taller...!

As you in my earlier post below, the actual height difference is 22mm
overall, or about 11mm higher under the fender.

Aspect ratio is NOT A FUNCTION OF OVERALL HEIGHT, but
of cross-sectional width:

Aspect Ratios indicate a tires cross-sectional profile. The smaller the number,
the lower the profile. It expresses the height to width ratio as a percent.
A 90 aspect ratio means the tire's cross sectional height is 90% of it's width.
CycleDoc59 is offline   Reply With Quote
Old 07-04-2013, 01:06 PM   #17
duck
Banned
 
duck's Avatar
 
Joined: Mar 2004
Location: Seattle (Berkeley with rain)
Oddometer: 10,404
Quote:
Originally Posted by CycleDoc59 View Post
A 110/80-18 tire has a diameter of 24.91 inches.

If a 110/90-18 tire were 12.5% taller, it would have a
diameter of 28 inches, which is over 3 inches taller...!

As you in my earlier post below, the actual height difference is 22mm
overall, or about 11mm higher under the fender.

Aspect ratio is NOT A FUNCTION OF OVERALL HEIGHT, but
of cross-sectional width:

Aspect Ratios indicate a tires cross-sectional profile. The smaller the number,
the lower the profile. It expresses the height to width ratio as a percent.
A 90 aspect ratio means the tire's cross sectional height is 90% of it's width.
You shouldn't drink so early.

Aspect ratio is the height of a tire as a percentage of the width.

The height of a 110/80 is 88mm.

The height of a 110/90 is 99mm.

The difference is 11mm - which is less than half an inch.
duck is offline   Reply With Quote
Old 07-04-2013, 01:27 PM   #18
joexr
Banned
 
Joined: Jan 2011
Oddometer: 3,534
Quote:
Originally Posted by CycleDoc59 View Post
A 110/80-18 tire has a diameter of 24.91 inches.

If a 110/90-18 tire were 12.5% taller, it would have a
diameter of 28 inches, which is over 3 inches taller...!

As you in my earlier post below, the actual height difference is 22mm
overall, or about 11mm higher under the fender.

Aspect ratio is NOT A FUNCTION OF OVERALL HEIGHT, but
of cross-sectional width:

Aspect Ratios indicate a tires cross-sectional profile. The smaller the number,
the lower the profile. It expresses the height to width ratio as a percent.
A 90 aspect ratio means the tire's cross sectional height is 90% of it's width.
Semantics.
joexr is offline   Reply With Quote
Old 07-04-2013, 02:25 PM   #19
lbyvik OP
Ummmmm?? REALLY?!
 
Joined: Apr 2011
Location: Fauquier County VA
Oddometer: 251
Thanks for all the info guys.

Looks like Im going to just order the proper size tire...although I am only finding 100's...but at least I know they will work without issue...

I don't need any drama on this trip!
__________________
I put the laughter in manslaughter
lbyvik is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 06:54 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014