[bluulantern]

I know many people discourage to change the tire to 160, but I want to do it for the aesthetic purpose. What kinds of mod do i need to do to make it happen? I saw this mod done in Thai and i looks gorgeous. I believe the tire is large than stock. Also, if anyone can help, what mods did this owner did to this bike? I just ordered my bike, and its coming next week, i can't wait. I'm also a first time rider and CBR300R will be my first bike.

Thank you in advance cheers

 

[SailorCBR300]

bluulantern That bike looks sick and its a 250r? Do you know if they show a list of mods on that bike? And those tires do look sick I have to agree.

 

[kiwi rider]

Wicked, I would be keen to know what type those clip ons are as they are mounted below the top yoke which I didn't think there was enough clearance on the fairing to do that.
Very interesting...

 

[bluulantern]

Unfortunately, I only saw this in Facebook shares. I Do not know what kind of MODs was done on it. It is a CBR300R not a 250. Looking forward for more responds here.

 

[Cropper]

The swing arm has been altered as well, I'm not sure you're getting much larger rubber on yours without a similar modification...

 

[bluulantern]

The swing arm has been altered as well, I'm not sure you're getting much larger rubber on yours without a similar modification...

What size do you think the tire is? Do you think its custom swing arm or may be its a ready made after market swing arm?

 

[Buck]

What mods would have to be made to have a wider front tire? Would brakes have to be changed?

Also looks like the handlebars have been lowered compared to original.

 

[mikal]

It's a Honda swingarm, aftermarket rims, probably a bit wider and maybe a 160ish on it? Looks pretty sweet, but practically probably drives like crap. Slower and look at the right foot peg. Your foot is basically touching the exhaust can. The front brakes look bigger too?

 

[wings]

No modifications needed i have a 160 on my bike and it fits with no problems, all these people that say the bike will feel worse is a load of crap. The bike feels a lot better, and you can still lean it into the corners. The only thing that i found is because i put a 160/60/17 my speedo is out a little bit. But the thing is you don't really have to change down in gear as much. You can just keep it in top gear. When i was doing 7000rpm my speed was around the 120km mark. Now it would be at 115kms But i like it. On the front it have a 120/60/17. And the bike feels just a little bit lower to.

 

[wings]

If you want to know about that modified 300 in the tri colour most of those parts are from a cbr 650

 

[MotoMike]

No modifications needed i have a 160 on my bike and it fits with no problems, all these people that say the bike will feel worse is a load of crap. The bike feels a lot better, and you can still lean it into the corners. The only thing that i found is because i put a 160/60/17 my speedo is out a little bit. But the thing is you don't really have to change down in gear as much. You can just keep it in top gear. When i was doing 7000rpm my speed was around the 120km mark. Now it would be at 115kms But i like it. On the front it have a 120/60/17. And the bike feels just a little bit lower to.

So it sounds like the Honda engineers didn't know what they were doing when they spec'd the 140 for the rear and a 110 for the front.

"Feelings" aside, I'd be willing to put up the title to my CBR as a wager that one of these bikes will lay down quicker lap times on stock size tires than it can on oversized tires. How a bike "feels" with this tire or that tire is pretty subjective, whereas lap times are objective and will always tell the tale of how a given bike responds to changes in tires and tire sizes.

 

[wings]

Who is talking about lap times. Who is talking about honda not knowing there stuff. I ride on the normal roads to work. Yes it is a different thing when you race your bike' but i don't. I just ride. Don't put words into peoples comments, just answer it as it is writen. If you have not tried it yourself how can you comment. People ask can i do this, and i want to do that, and i'm only telling them what i have experienced myself with my bike. When people start talking about lap times where in the post did i say anything about racing or lap times. A forum a for answering peoples question so if you read the question (How to fit a 160 tyre on a cbr 300r) So i answered it because i have done it. And i said what happen such as the speedo being out. Now it is his choice wether he does it or not. Sometimes on forums it is hard to get a straight answer. And all you get is a heap of opinions. And that does not help to get an answer for the original question.

 

[Youda122]

Observing that picture in first post are you sure it is a 300r? I thought I spotted twin front brake rotors, plastic upper brake resvior, the rear brake caliper is upside down and the front forks are upside down?. if it is still a 300r it has had a lot of money put into it and these are just the first things I noticed.

 

[wings]

yes the hole running gear of the bike has been changed. As far as i know its just a one off for a bike show, The new cbr 250 rr has a similar look

 

[MotoMike]

Who is talking about lap times. Who is talking about honda not knowing there stuff. I ride on the normal roads to work. Yes it is a different thing when you race your bike' but i don't. I just ride. Don't put words into peoples comments, just answer it as it is writen. If you have not tried it yourself how can you comment. People ask can i do this, and i want to do that, and i'm only telling them what i have experienced myself with my bike. When people start talking about lap times where in the post did i say anything about racing or lap times. A forum a for answering peoples question so if you read the question (How to fit a 160 tyre on a cbr 300r) So i answered it because i have done it. And i said what happen such as the speedo being out. Now it is his choice wether he does it or not. Sometimes on forums it is hard to get a straight answer. And all you get is a heap of opinions. And that does not help to get an answer for the original question.

Wow.

Sure seems as though you're being overly sensitive to my post, as well as a bit defensive when it comes to this topic of tire sizes.

So how did I "put words into your comments"?... I didn't. Nowhere did I say that your post made any reference to or about lap times. I simply stated an opinion, using the context of track testing to give my opinion some credibility.

As a senior Moderator here for these forums, I'll say this just once: Whether you happen to agree with another members viewpoint on a particular topic or not is immaterial. Anyone posting on these forums is entitled to have an opinion. What you are not are not entitled to do is post a follow up comment telling another member (myself included) that they have no right to voice their opinion, which is what your above post implies.

To put it another way, calling out another member for having an opinion you don't agree with isn't going to fly here. If you do this again, that post will simply be deleted.

 

[MotoMike]

Observing that picture in first post are you sure it is a 300r? I thought I spotted twin front brake rotors, plastic upper brake resvior, the rear brake caliper is upside down and the front forks are upside down?. if it is still a 300r it has had a lot of money put into it and these are just the first things I noticed.

This bike shown in the OP's photo also has non-stock wheels, which one could assume are wider than the stock OEM 250R/300R wheels, in order to accommodate the larger tires. It also has a different swing arm, which looks to be the aluminum unit as used on the CBR650F. Definitely quite a bit of money spent on all of those components.

If you look at the frame in the area above the rear sets, it's the same frame as used on the CBR250R/CBR300R... so the bike could even be an Asian market 2015 CBR250R (which shares the same body work with the 300R). The photo in the OP isn't sharp enough to clearly read the "CBRXXXR" decal on the side cowl.

Photos of the Asian/Indonesian market 2015 CBR250R...

 

[DaBinChe]

I just recently saw a cbr250 with a 180 on back. It fits just barely, about 2mm of clearence. Looked awful. Towards the edge the threads were near vertical so basically the last inch or so on each side was useless. Next time I see it I'll take some pics.

I would guess that the 160 is kinda like this too and the edge of the tread was at an angle that makes it useless. I don't see more then a 150, but width of rim determines tire width and as is stock is a perfect setup.

Theoretical numbers:
140/70 is 4mm larger in diameter then a 160/60 so not much of a difference. Just the thread wear alone is more then twice this difference. And a 180/55 is 2mm larger in diameter then 140/70.

Wider tire on rim meant for narrower tire will make it have a funny shape crown/profile. Will handle slower not lean over as evenly, be heavier so brake and acceleration will be worst. Waste more fuel, wear out brakes and drive faster. When I say lean over evenly, because of the crown shape, it will lean slow at first then suddenly be fast then suddenly you lose usable thread cause the angle is too vertical.

 

[wings]

The tyre sits ok on the rim

 

[MotoMike]

Just looking at the extreme angle of the side wall of this 160/60 ZR 17 mounted on the stock wheel (lower right photo), it's easy to see that this tire is far too wide for the bead to bead rim width of the wheel. Then look at the shallow angle of the tire side wall before it's mounted on the wheel (lower left photo), which is close to what it would look like when mounted and inflated on a wheel with a proper sized rim width.

For correct fitment of a 160 size tire, that wheel rim width would need to be about a half inch wider.

Here in the U.S. (and I would think in most Western countries), no reputable dealer or independent shop would even consider mounting that tire on a 250R/300R stock wheel.

 

[wings]

When you look at the tyre off the rim in real life the side walls are at the same angle. The actual beading is narrower than the rim. That's why i chose this particular tyre. The shape did not change on or off the rim. And that's a fact