Can you go up one size in the front and back? - BMW R1200GS Forum : R1200 GS Forums
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 04-Oct-2010, 05:14 PM (926) Thread Starter
Junior Member
Join Date: Sep 2010
Posts: 1
Question Can you go up one size in the front and back?

I know the stock tires are 110/80 19 front and 150/70 17 rear, but can you throw on a 120/70ZR19 and 160/70VB17 and get away with it? I like the way wider tires feel and look (I know, squidly). Sorry if it's been asked already.

Bakerist is offline  
Sponsored Links
post #2 of 4 (permalink) Old 04-May-2011, 10:28 PM (144)
Not that senior.
gdayjr's Avatar
Join Date: Mar 2011
Location: Sydney Australia
Posts: 676
Send a message via MSN to gdayjr Send a message via Yahoo to gdayjr Send a message via Skype™ to gdayjr
Upsizing tyres

Why the need to change sizes?. Engineers take a lot of things into account when deciding on a specific size tyre for a bike, or car for that matter.

Rim size. contact patch, and the downforce applied to that contact patch, are just a few, so why second guess an engineer that has years of experience, and put another size on?.

Change brands, yes, experiment with tyre presure's. sure, but change size...why?
gdayjr is offline  
post #3 of 4 (permalink) Old 05-May-2011, 09:54 AM (621)
GS (and DR)
marc's Avatar
Join Date: Oct 2006
Location: SF Bay Area
Posts: 2,923
I don't have a link handy, but there are lists available that will tell you what size tire will safely fit on a rim of a given size. However, while a different tire size may safely fit the rim, you still may have clearance issues with things like front forks and rear swing arms. Unless you can get the tires for free for testing it may be an expensive, failed experiment.
marc is offline  
post #4 of 4 (permalink) Old 19-May-2011, 10:49 AM (659)
Junior Member
Join Date: May 2011
Posts: 3
I really wouldn't suggest it. A good way to screw up the handling. Tires are sized for corresponding rim width. Deviate from that and the contact patch is not working as it was designed to do.
Aviatortroy is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the BMW R1200GS Forum : R1200 GS Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome