Topic: Tire Size Q's

[RM81]

First off, the question is about tire size, not which brand is best, so no flaming here.
I've been researching the last couple of days and can't find the answer, so I'll ask the experts here.  The bike is an 82 CM450 and stock specs for the back tire are 4.60 S16 which from what I gather equals a 120/90-16.  Does anyone know what the cons would be to move up to a 130/90-16 and if it's doable.  The ones I want don't come in a 120 size.  The only thing I've found is that if you go too big, then the center wears out quick.  Is going from a 120 to a 130 too much of a change and will I lose a lot of handling?  Thanks in advance for any help or info.

[RM81]

I think I may have found the answer, but feel free to chime in if you want.

[333]

With there being so much in here, I know it would be hard to find.  I have posted this before, but not for a while.

Metric tires are sized by width(in mm)/height(as a percentage of the width) X rim size in inches.  So a 120/90X16 is 120 mm wide by 108(90 percent of 120) for a 16 inch rim.  Inch tires, unless stated by a decimal other than .25 increments are 90% height.  Confusing, isn't it?  A 4.25 X18 is a 4 1/4 " wide tire, but a 4.60 is a 4 " tire with a 60% height, or a low profile tire.

[RM81]

With there being so much in here, I know it would be hard to find.  I have posted this before, but not for a while.

Metric tires are sized by width(in mm)/height(as a percentage of the width) X rim size in inches.  So a 120/90X16 is 120 mm wide by 108(90 percent of 120) for a 16 inch rim.  Inch tires, unless stated by a decimal other than .25 increments are 90% height.  Confusing, isn't it?  A 4.25 X18 is a 4 1/4 " wide tire, but a 4.60 is a 4 " tire with a 60% height, or a low profile tire.

So should I go with a 120/80 instead?  Some conversion charts had both 120/90 and 120/80 as substitutes for 4.60.  Do you think 130 is too wide?