Ok folks, help me decide which size:
130/90 or 140/80.

Is the wider width worth the additional $25USD?
Ready to pull the trigger on purchasing.
But....
Have excellent experience using the AM26 90/90 V18 on the front of the cafe bike.
Not sure which size to choose for the rear of the K100RT.

Riding is mostly street & highway at moderate speeds ie. Street stop & go 0-35mph / Highway 35-85MPH.
Mostly unladen, with the occasional camping trip or grocery/beverage run.
Very rare two up, laden with pillion & ~100lbs of gear & unladen touring/sight seeing with pallion @ ~120lbs.

So please reply with whatever comments/opinions you may have.
To help me decide on 130/90 17 or 140/80 17 for the rear

Here's a link to my shopping cart at the moment:

http://www.motorcycle-superstore.com/cart

Thank you in advance for any and all replies/comments/opinions.

Troy

Hint: What it's your shopping cart is on your PC/device. Nobody else can see it.

I'd say the difference is mostly cosmetic. The 130 will be less prone to hydroplaning if you ride through standing water at speed.

duck wrote:Hint: What it's your shopping cart is on your PC/device. Nobody else can see it.

I'd say the difference is mostly cosmetic. The 130 will be less prone to hydroplaning if you ride through standing water at speed.

Thanks Duck.

Decision made, 130 it shall be.
OEM spec was my preferred choice & for exactly the reason you stated.

BTW the link is showing ok as I am viewing this thread right now.
Here's the link using the insert function instead of my copy/paste as before.
Does this work?

Tires/Tyres link

It worked just now, when I used the preview function & clicked it.

tagaz wrote:

duck wrote:Hint: What it's your shopping cart is on your PC/device. Nobody else can see it.

I'd say the difference is mostly cosmetic. The 130 will be less prone to hydroplaning if you ride through standing water at speed.

Does this work?

Tires/Tyres link

No, it doesn't work because information in your cart is linked to your ISP address only for your shopping security.

Laitch wrote:

tagaz wrote:

duck wrote:Hint: What it's your shopping cart is on your PC/device. Nobody else can see it.

I'd say the difference is mostly cosmetic. The 130 will be less prone to hydroplaning if you ride through standing water at speed.

Does this work?

Tires/Tyres link

No, it doesn't work because information in your cart is linked to your ISP address only for your shopping security.

I should have known that.
Note to self, duh!

Hello!

Base:
I've got 2 K75 1991 Sachs and 1992 Showa
K75 Basic: 100/130 90 Combi BT45 
K75 Basic 110/140 90 Combi BT45 

Both combination approximately equal running capacity.
The 100/130 Combi runs a little more nervous, want to say, around the corners it goes with less effort, just missing something of the "like on rails" impression. 
The 110/140 Combi gives a steady impression, at higher speeds on the autobahn, in curves it needs a little bit more bodywork.

Maybe this is the reason I prefer the bike with 110/140 90 more and ride it more often, even so it has the old Sachs fork and not the good Showa fork build from 8/1991.

In the end it doesn't realy matter 100/130 or 110/140 ;-)

Cheers

I have used all mixes 100/90 and 130/90, 100/90 and 140/80, 110/90 and 130/90, 110/90 and 140/80.

All are good and the differences are not a lot but my preference by a good margin is 110/90 and 140/80, I like the feel most of all, running 38psi front and 42psi rear. This is also as Chocolate has found.

This is on a K100RT that most of the time has panniers and stuff in them. However with no panniers on and no top box it feels at its best.