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Author Topic: Tire Size  (Read 653 times)

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Offline Irishjedi

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Tire Size
« on: February 03, 2021, 02:04:43 pm »
I know there are a few threads about tires but I want to know what is the biggest rear tire any of you have put on. I know stock is 150-80-16.  Wondering if anyone has run 160, 170, or 180s.  I'm looking at the Pirelli Night Dragon. Any suggestions for the best place to get the tires from? Thanks.



Offline Dunny

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Re: Tire Size
« Reply #1 on: February 03, 2021, 06:05:15 pm »
use the search function ... there are a few threads on that question ...

Offline DrM

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Re: Tire Size
« Reply #2 on: February 03, 2021, 07:29:34 pm »
This may not answer your question(s), but it may help someone else contemplating a larger tire.

The OEM rear tire (150/80-16) is right at 6" wide (150mm = 6"), and the tire sidewalls are about 120mm high (150*.80=120). The actual wheel rim width is between probably 3" and 4", but I haven't measured it.  You should get someone who works on Yamaha Bolts regularly to measure the rim width for you (assuming they have a rim in stock), as that is one of the controlling measurements that determines the maximize size tire width you should install on an OEM rim.

NOTE:  The rim width is normally 2 or 3 inches less than the width of the tire - and you don't want to go much over that as it may cause adverse handling.

That being said, Dennis Kirk had a Pirelli Night Dragon 150/80-16 which is more like your OEM stock tire.  And they also had a 180/65-16 which might also be a good fit (though not necessarily a wise fit.)  The 180/65-16 is about the same outside diameter tire as OEM tire, but at about 7" is an 1" wider than your OEM tire.
 If you are worried bout clearance, you could wrap a half-inch strip of foam around each side of your OEM tire and see if it hits anything on the bike.

EDIT:  Appears Dennis Kirk no longer has these tires, but Amazon.com might.
« Last Edit: February 04, 2021, 02:41:06 am by DrM »

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Offline Irishjedi

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Re: Tire Size
« Reply #3 on: February 05, 2021, 12:04:31 am »
Dr. M thank you for the advice.  I can definitely see the problems with height clearance, hence why I asked. If they are only an inch wider not a major difference. On my bike I was looking to go larger, for more stability. However, from what you said that may not be the case.  It's looking like I may stay at the recommended sizes. So far they have done me well. But definitely want to change out from the stock Bridgestone.  The Pirelli MT 66 look good too. Decisions, decisions.

Offline PyroBlitz

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Re: Tire Size
« Reply #4 on: February 07, 2021, 04:00:18 am »
There are a Number, I have a 200 on mine (rear) and a 120 up front, but my rims are custom so I can't speak to it working stock.

Pretty sure this thread said a 180 is as big as stock rims can go?

https://www.yamahastarbolt.com/mods-and-accessories/rear-tire-1668/msg20380/#msg20380

Hope that helps!

Offline NewNormal2021

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Re: Tire Size
« Reply #5 on: February 16, 2021, 10:44:44 pm »
This tire is good, I use it.

Offline DanaRacer

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Re: Tire Size
« Reply #6 on: February 19, 2021, 07:09:04 pm »
I'm on my 2nd set of M66's and have been happy with them.  Cycle gear has a good price and only charges $25 a piece to install if you buy thru them.