Motorcycle tire sizing

[Llamaguy]

I know that on cars, you can fudge the size a little without hurting anything, but how set in stone are the size tires that a bike needs to be safe? with respect to width and aspect ratio

[Grandpa]

Depends on the bike. A shaft GS bike has only so much room for a rear tire. A typical 130 90 16 (or 17, depending on the rim diameter), is the widest that can safely be installed. A 140 90 16 may rub the swingarm. I wouldn't deviate from a 130 90 rear tire on a big shaft GS bike. Maybe the chain GS bikes may give more flexibility in this area, but I don't know for sure.

On the front one can use a 100 90 19 or 110 90 19, and either one will fit and be safe. I can only speak for the 850, 1000, and 1100 G bikes.

[rkubik]

90/90 and 100/90

for the front, going from a 90/90-19 to 100/100-19 worked fine for me. 100 and 110 widths are a lot easier to find these days.

[Country00]

On the 83 750E that I have you can't even go to a 130 rear without hiting the chain

[first timer]

take a look here, i posted a tire fitment guide.

http://www.thegsresources.com/_forum...122#post397122

-ryan

[omaharj]

Firsttimer, your link is a deadend. Or maybe just for me !

[Dink]

Firsttimer, your link is a deadend. Or maybe just for me !

It is in the GSarchive;link at the bottom of the page, and look up the post number.
Dink

[first timer]

i'll just give you the direct link

WWW.GRimp.net/ryan/tire_to_wheel_fitment_and_tire_change_guide.zip


-ryan