Rear tire size - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 30 (permalink) Old 05-08-2012, 01:52 AM Thread Starter
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Rear tire size

So I'm looking That buying a New rear tire and looking at the one I have it is a 140 90 15. If I remember right the service manual recommends a 150 90 15. If I buy a 150 90 15 Can I just stick it on the rim I have? Will it cause any problems?

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post #2 of 30 (permalink) Old 05-08-2012, 08:20 AM
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You should be able to. The stock rear is 150/90-15 and a lot of us have gone to a 170/80-15 which fits on the wheel ( rim )

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post #3 of 30 (permalink) Old 05-08-2012, 10:24 AM Thread Starter
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Is there a reason or advantage to the 170/80-15?

Combatchuck

Looking for:
Swingarm caps
Highway pegs or engine guard
PM if you got these for sale


1986 Vulcan 750
NGK Plug Wires and Iridium Plugs
AGM Battery
Shinko 230 Tour Masters @24,400 miles
Right side rebuilt after PO laydown
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post #4 of 30 (permalink) Old 05-08-2012, 11:01 AM
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Quote:
Originally Posted by combatchuck View Post
Is there a reason or advantage to the 170/80-15?
Most, not all as it depends on the brand, 170/80's are taller tires than the 150/90's, so less rpm per mph and a bit better mpg's. Being a wider tire you will also have a bigger contact patch on the road. But the 150/90 is the stock size and you should have better performance with the 150/90 vs the 140/90. Also the 170/80 can be a real PITA to get passed the final drive.

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post #5 of 30 (permalink) Old 05-08-2012, 11:57 AM Thread Starter
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Thanks for the info. I think I'll stick to the 150/90 as I'm going for as little tweaking as possible since this is my first bike.

Combatchuck

Looking for:
Swingarm caps
Highway pegs or engine guard
PM if you got these for sale


1986 Vulcan 750
NGK Plug Wires and Iridium Plugs
AGM Battery
Shinko 230 Tour Masters @24,400 miles
Right side rebuilt after PO laydown
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post #6 of 30 (permalink) Old 05-09-2012, 12:19 AM
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Quote:
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Is there a reason or advantage to the 170/80-15?
I did the 170 and had no issues,, It was easy to install and made my bike handle much better..

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post #7 of 30 (permalink) Old 05-09-2012, 12:26 AM
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Here's a side by side comparison of our stock front and rear tires vs. the over sized (which is what I went with).

https://www.vn750.com/forum/showthread.php?t=19864

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post #8 of 30 (permalink) Old 05-09-2012, 02:17 AM
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I got a set of Pirelli Night Dragons and the rear is a 170/80-15. To get it past the final drive was really no big deal. I let out the air until 10 psi put a paper towel over the final drive to keep the grease off the tire and worked it in side to side.
Great tires for the few rides i've done so far. I find myself dropping more aggressively in the corners and getting on the throttle a little harder on the exit.

For anyone who likes to ride like this, go with the lower bars too!
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post #9 of 30 (permalink) Old 05-10-2012, 12:08 AM Thread Starter
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Another question I'll throw in here. Is a higher load/speed rating always better? 74H is oem but I found a rear 80V tire, higher in both regards, is there any reason I shouldn't get it?

Combatchuck

Looking for:
Swingarm caps
Highway pegs or engine guard
PM if you got these for sale


1986 Vulcan 750
NGK Plug Wires and Iridium Plugs
AGM Battery
Shinko 230 Tour Masters @24,400 miles
Right side rebuilt after PO laydown
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post #10 of 30 (permalink) Old 05-10-2012, 01:05 AM
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i just had the oversized tires put on yesterday. I went with Shinko 203s and i can definitely tell the difference. It feels fatter on the ground to give some more stability. Admittedly, some of that may be strictly brand new tires as opposed to tires that didn't have a whole lot of tread left, but I like the way it feels

Pittsburgh Dave
2001 VN750...old ride
2003 VN1600.. new ride
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