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Offline Big_John

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170/60r17
« on: July 11, 2019, 12:26:10 AM »
You might know that BMW has moved to 170's on their GS's.  The reason is.... bikes are heavier and being loaded heaver.  The 150 tire is traditionally a 69 load rate.  The new 170's are a 72 load rate, allowing for an additional 67lbs or so.

67 lbs might not seem like a lot.... but when I am loaded to the max for 2-up touring... that additional rating is important.

Will the 170 tire fit our rim width?
Will the 170 tire fit in the 'wheel well'?

Has anyone run the 170 tire?

.........

Offline Superjeap

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Re: 170/60r17
« Reply #1 on: July 11, 2019, 02:33:30 PM »
No, the rim is not supporting 170 tyres
<-- Check!

Honda VFR1200XD - XR400R - the Dutch gather Here

Offline DEMBONES

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Re: 170/60r17
« Reply #2 on: July 11, 2019, 03:54:58 PM »
I think the new BM's have a 5 inch rear wheel.  The CT uses a 4.5.   :157:

Offline Big_John

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Re: 170/60r17
« Reply #3 on: July 11, 2019, 04:49:57 PM »
These are two completely independent sources for Rim recommendations to tire size.  In both instances, a 4.5" rim will work with a 170/60 tire.

I just wonder if the 170 will rub.... or NOT rub?????






Offline DEMBONES

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Re: 170/60r17
« Reply #4 on: July 11, 2019, 05:03:47 PM »
Somebody has to try it out to find out...you up to the task?

Offline Big_John

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Re: 170/60r17
« Reply #5 on: July 11, 2019, 05:57:14 PM »
I might be up to the task....  I am tempted to inquire and snag a used 170/60 from a BMW rider and install it for fitment testing, before I drop $150-$200 on a new 170/60.

But.... I just installed a 150/70 Motoz GPS.... and if that tire lasts me 10k miles or so... I might not be able to do the test until later in the year.

Online mzflorida

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Re: 170/60r17
« Reply #6 on: July 12, 2019, 11:46:26 AM »
John, did you install the new springs?  I recall you were waiting for the tire change.  My bike is in the shop now getting springs and shocks installed, brakes, and brake fluid flush. 

Offline Juggler

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Re: 170/60r17
« Reply #7 on: July 12, 2019, 01:10:48 PM »
Rear rim is 4.0" unfortunately, so I wouldn't even try to fit 170/60

 


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