[ken]

Whats the fattest rubber possible on the CBR250R without any/much mod to the swing arm,rim, etc.

Please share your Brand, Size, Mod required, and price.thanks.

 

[HSR01]

Whats the fattest rubber possible on the CBR250R without any/much mod to the swing arm,rim, etc.

Please share your Brand, Size, Mod required, and price.thanks.

i'm guessing 120/70 in Front, and 150/70 in back. but if you release the tyre hugger in the back, perhaps 160/70 would fit.
The brand can be vary from Bridgestone Battlax, Michelin, or Dunlop. But for me personaly, i chose the Battlax or Michelin.

 

[RC927]

Don't base it on the width you can fit in the swingarm, it's the width of the rim you have to pay attention to. The rim is not wide enough for a 160. I would stick to the 140 for best performance.

 

[Xplorguy]

On one of the forums a guy had photos showing a 150/60/17 on the rear stock wheel. No idea as to the acceptability of that............

 

[kvr929rr]

Usually you can go up or down 10mm from stock without too much of a problem. The big drawback to the 140/70 is that most of the good tires like Pilot Road 3's, Diablo Rossos, etc., don't come in that size. So a 150/70 would probably be okay. Keep in mind this would likely raise the ride height a bit but those tires being radials may squat a bit more than the bias-ply stock tires so you could come out even. The bike would definitely handle better.