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The 600cc bikes have 5.5 inch rims, which fit 180 tires. Liters have 6inch rims and fit on 190 tires.

The 190 on most, if not all liter bikes is a 50 series tire and less 'pointy' than the 180 which is a 55 series tire.

When you take a 180 and put it on a 6 inch rim, it stretchs it out a little to fit it. It still a little more 'pointy' than a 190/50 so yes, the turn it will quicken on some. The downside is that you have less of a contact patch when you are leaning it the corner pretty good.

Alot of tire manufactures made a 190/55 tire as a solution to this. You get all your pointiness you want and still get your fat contact patch.

Pointy is a funny word.
 

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WIM-RC51 said:
Funny... now that I have tried both a 180/55 and a 190/50, I would stick with the 180/55.

It was more predictable for me, even at extreme lean angles, I could usually catch a slide or potential low side in time to save it.

With the 190/50, I have the front end sliding out on me at lean angles. I am still working on my suspension settings - either have to raise the rear a bit to compensate for the loss of 5 millimetres or so, or soften the front end or lower it. Not sure yet.

I am also going to try a 190/55 - as soon as I can spare the change for it.

wim.
Oh geez, don't start with that whole 5mm thing again.
 
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