76 CB400F SS

I have a 120 x 80 x 18 and there isn't much room for anything wider as it will start to interfere with the swingarm and also have issues with chain rub.

To go wider I would recommend a different swingarm and offset sprockets.
 
mine has a 130 on it currently (PO's stupid decision) and it is the absolute max you could go without hitting the swingarm.
It IS rideable, i have put over 1000 miles on it, but it SUCKS. I can feel it around every bend and I CANNOT wait to put a smaller tire back there to regain the lost handling.

I think he's talking wider wheel though? So if you widen the wheel, you can fit a 130 on the back without rubbing. WIth the stock wheel it handles a little scary.
 
I have a CBR600f1 rear mag with disc brake and a 120/80-17. Wheel and tire fit, but much machine work had to be done to move the cush hub and sprocket over. I would think with a 130 you have to worry more about chain clearance than swing arm clearance.
If you just want to lace a wider rim on there there is not much work other than the clearance issues mentioned with the larger tire..
 
SONICJK said:
I think he's talking wider wheel though? So if you widen the wheel, you can fit a 130 on the back without rubbing. WIth the stock wheel it handles a little scary.
Click to expand...
Think u might be right
 
I put a 2.75 rim on the rear of mine and with a 120 it's still pretty close to the swingarm and chain.

Not only that but a 130 would rob handling and power from a stock 400f. I'm going 466cc with heavy bracing on the swingarm and chose not to put a 130 on there (despite really wanting to for looks) as I wanted to retain a neat handling bike with good acceleration.
 
All in all, I'm building this one for myself. Not going to sell it for awhile so ridablilty is a must. I ride all year and riding in comfort is my style. I will prob just keep stock sizes then, why jeopardize handling and acceleration.


I do really like the look of the larger tire and would prob change if my plan was to make a quick sale, haha most people who buy my bikes buy for the look not the ride necessarily.

...Which makes me wonder sometimes if they are real "bikers" or not!!! hahaha.

But anyone who gets on two wheels is my kind of person..
 
Realize that some manufacturers can vary by sometimes a half an inch or more on same sized tires. Even same manufacturers, like an Avon Gripster 90-90-21 comes in at 3.6 while same size Avon Roadrider comes in at almost 4 inches...food for thought.
 
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