Tire size - Kawasaki Ninja 250R Forum
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post #1 of 16 (permalink) Old 08-13-2010, 07:41 AM Thread Starter
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Tire size

Wondering if anyone knows whats the biggest size in tire? I've read someone put a 150/70/17. I want to put a wider tire for better performance most importantly looks.
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post #2 of 16 (permalink) Old 08-13-2010, 10:12 AM
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Putting a wider tire on the 250R will not give you "beter performance" it will only limit your "flickability". The widest tire you will be able to fit on the bike without modifying the swing arm is a 150... depending on brand you will have to figure out whether a 60 series or 70 series will work. There are lots of topics that cover this information... a little searching goes a long way. Good luck, let us know what you decide.

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post #3 of 16 (permalink) Old 08-13-2010, 08:34 PM
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Originally Posted by DemonChild03 View Post
Wondering if anyone knows whats the biggest size in tire? I've read someone put a 150/70/17. I want to put a wider tire for better performance most importantly looks.
I had a BT021 150/70/17 on mine and it fits fine. I took it off though. If you just want that size for looks then no problem. Mine has plenty of tread left. I'd sell it to you cheap but you're 10hrs away.

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post #4 of 16 (permalink) Old 10-03-2010, 02:36 PM
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Here's the pics you requested. They can be found online for $139.99 for the 150 rear.
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File Type: jpg IMG_1789.JPG (41.0 KB, 16 views)
File Type: jpg IMG_1792.JPG (35.0 KB, 15 views)

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post #5 of 16 (permalink) Old 01-12-2011, 11:42 AM
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Do you really get any benefit from cramming the biggest tire you can on the back? I would think when Kawasaki designed the Ninja 250, tires were considered too. And then if you do use that big tire in the back do you have to compensate for the front also?
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post #6 of 16 (permalink) Old 01-12-2011, 03:34 PM
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^you can gain contact patch but bear in mind you may be changing the profile of the tire fitting it on a thinner wheel size. Geometry is also affected with taller tires

no compensation necessary

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post #7 of 16 (permalink) Old 01-13-2011, 12:11 PM
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So then, since you took your 150 off, would you say the benefits of cramming a 150 rear tire on your ninja 250 don't outweigh the negatives?
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post #8 of 16 (permalink) Old 01-13-2011, 01:13 PM
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^I just didn't like it. Someone else might like it. Some people like the fatter tire for the looks. At WSMC they run the 150 rear. I tried a 120/150 setup but was getting some slippage which could have been caused by a number of things. On the front I couldn't get even close to the edge. The larger tires add rotational mass as well. I switched to a 110/140 setup and found that's what I like the best. Personal Preference really.

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post #9 of 16 (permalink) Old 01-13-2011, 01:30 PM
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^I just didn't like it. Someone else might like it. Some people like the fatter tire for the looks. At WSMC they run the 150 rear. I tried a 120/150 setup but was getting some slippage which could have been caused by a number of things. On the front I couldn't get even close to the edge. The larger tires add rotational mass as well. I switched to a 110/140 setup and found that's what I like the best. Personal Preference really.
I see. What's WSMC? Is that like the local ninja 250 race series or something? Sounds like the 110/140 is a good compromise.
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post #10 of 16 (permalink) Old 01-13-2011, 01:41 PM
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Willow Springs Motorcycle Club at Willow Springs Raceway in Rosamond. About a half hour north of Lancaster. Club racing once a month. They do have a ninja cup.

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