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150mm rear tire on 2008 Ninja 250r

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85K views 32 replies 18 participants last post by  Ninjesterai  
#1 · (Edited)
Hey guys,
A friend of mine stuck a 150mm tire on his 2008ninja 250. Looks a ton better than the stock 10speed bike looking one that came on it. I was wondering how wide can you go without needing to mod the bike? Thanks!
 
#3 ·
the widest you can put on there is a 150 according to the Perelli guys at the track. Putting anything bigger on it would be over kill.
 
#5 ·
Ive heard some mixed things about putting the 150mm on the bike. My buddy says he doesnt notice a difference in handling or acceleration, but then I read on other forums that you can notice a difference. (maybe hes just saying he doesnt notice it i don't know) Anyway, before I do it to mine, do you think it will be an unsafe and/or bad modification to do?
 
#6 ·
My old GS500 had a 140 on it (130 is stock). The only reason to go to a thicker tire on a 250r on the street is for looks.... i.e. to make it look more like a 600/1000 supersport.

As long as nothing is touching/rubbing the tire, chain, or swingarm then it is 'safe'... but I can't think of it offering any advantages to the bike. There will (in theory) be more contact patch available, but the profile of the tire will have to be fairly tall (since you will be using the same stock rim).

150mm is still a long ways off from 180mm (which is what the SS bikes rock). I would go to 140mm to play it safe. If the skinny tire really bugs you that much then get a more powerful bike like the 650R
 
#7 ·
I ran a 150 on the 08. It is safe and handles just fine. I didn't notice much of a difference other than the tread compound. You will have a better tire selection with a 150 as far as "sticky's" go. Otherwise, there's no point.
 
#9 ·
the stock is a 130/70-17. If you go with a wider tire, you need to go down in profile. you would have to go with a 150/60-17 or even a 50 series.
 
#11 ·
I think so. I had the perelli guys put on the stickiest tire they had that would fit. I know it was a 150 and I'm pretty sure it was a 60 series...it would fit a lot better than a 70 series
 
#14 ·
holy balls thats a huge side wall:scared
 
#15 ·
The tire is A Bridgestone 150 / 70ZR / 17MC

as far as installation, i went to a local motorcycle shop and had them install it for me. At first they told me that it wouldn't fit, but i insisted that they install it anyway, because it knew it would fit. Anyway this mod is VERY COOL but, The guy that installed this tire for me brought up a good point, i am not a very big guy, 5,5 135lbs the tire clearance is not much at all and if you are a bigger guy the tire will flex while cornering, causing it to rub on the swing-arm. in my case because I'm so small it is no problem at all. The ride is sweet! much better balance. If you are looking to go bigger on the tire and still want a good tire clearance it would suggest a 140 tire. The 150 tire fits with no modification at all just in case your wondering.
 
#18 ·
2008 250r ninja


TO: IVANRULES

I love what u did with the tire on your 250R, I've been dying to get rid of that skinny rear tire. Thanks to you, now I know its possible without any drastic modifications. Have you done any bodywork modifications? I'm only asking for ideas as well. Do you know of any japanese websites where I can find cool aftermarket products? I ask because here in the U.S., the 2008 250 R is fairly new, so there isn't much on the market. Let me know please.:crazyloco
 
#19 ·
I have a question regarding sidewall flex. I am about 220lbs and riding a 250 08 bike. I am looking to put better tires on the bike, and I am dwelling between the BT-16 Bridgestones and the Pirelli DIablo Rossos both in the 120/70/17 front and 150/60/17 rear. Any pros and cons? I don't see the sidewall flex being too much an issue, unless I am really pushing the bike. Should I go with a lower profile then, or stick to a smaller width?

Thanks in advance

E
 
#23 ·
160 Rears for Ninja 250



As long as you stay with the 60 profile, you will be fine. I have Michelin Road 2 160/60/17 rears on my 2010 250 and a buddy of mine who is 6ft 3in 240lbs tooled around on mine for a entire weekend and decided to swap out his 150/70/17 for the same on his 250. The extra width and lower profile kept anything from flexing even under hard riding (which I witnessed my big friend do) and he agrees it was money well spent. It looks great as well and as you might know, the skinny rear tire on the 250 was the only real giveaway that it was a 250. The 160 upgrade is a win-win all around in looks and performance.
 
#20 ·
160 Rears for Ninja 250



On my 2010 Ninja 250, I've got Michelin Road 2 160/60/17 rears and 110/70/17 front with no mods what so ever. I had 150/60/17 but a nail went through it and decided to get 160s. It rides great with no change in negative performance and the positive attributes like high speed stability and better all around traction can't be conveyed enough. As long as you stay with the 60 profile or lower, you are fine.
 
#29 ·
On my 2010 Ninja 250, I've got Michelin Road 2 160/60/17 rears and 110/70/17 front with no mods what so ever. I had 150/60/17 but a nail went through it and decided to get 160s. It rides great with no change in negative performance and the positive attributes like high speed stability and better all around traction can't be conveyed enough. As long as you stay with the 60 profile or lower, you are fine.
I have inherited the 250 to get my seat time and wanted to know how your 160 tire is holding up. I'm a heavy guy(215lbs) and this may affect how the profile of the tire rides, when compared to a lighter rider.

E
 
#24 ·
Looks?
Really?
That's not how tire size is determined.
Actually, maybe it is :dunno.
Maybe they have a snobby French guy with a thin moustache, wearing a scarf and they just keep rolling a bike out and have it model different tires.
"No, no, it's all wrong, that tire is to skinny."
"No, no, that tire makes the bike look fat."
"No, no, that tread pattern is hideous."
 
#26 ·
Honestly I love the look of a fat tire... 190 here... why?... because its factory recomended...


These 250r's will never reach a speed where the width of the tire detemines the 'roll' and affecting turn in or causing any issues in regards to cornering.


I :mfclap for you guys modding your 250's.... but if you want a bigger tire then buy the bike its meant for!!


my 2 cents
 
#28 ·
i had a 150/60 on my old 250r..they were BT016's and i noticed no difference at all..only difference was not being scared to run out of tire when leaning as far as possible into a turn (scraped off the OEM foot peg rubber thingy) i miss that lil thing
 
#30 ·
160 Rear




I put Michelin Pilot Road2 160/60/17 on the rear with no mods what so ever and it was the best money spent. The front are the same size Michelin110/70/17. I have no handling issues but the additional traction is day and night. Understandably, the stock Dunlops are the cheapest available to keep the msrp down but I highly recommend upgrading the rubbers to something better. You dont need to go with 160s but at least 150s will give your bike infinitely more traction and stability.
 
#32 ·
i'm riding 150/70/17's on my 250 and am having NO issues. The tire is slightly heavier then the stock 130's so in theory acceleration will be affected... but considering I weigh 160lbs it's not that big of a deal-- which translates I don't feel any difference. I will admit cornering took a little getting used to- like riding a new bike, but not a big deal.

My mechanic said he's put 170's on 250 Ninjas before, with no problem. But anything wider then 150's on a 250 in my opinion is silly. 150's look right, 130's look like front tires. Anything bigger then a 150 people expect engine mods lol

let people do what they want- it's their bikes. As long as it doesn't cause danger to themselves then I say they're free to do as they please... but, I might laugh if I saw a 180 on a 250 ;)

ride safe!