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  (#1)
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YUSOSLO's Avatar
 
Posts: 1,043
Join Date: October 20, 2002
April 23, 2003, 01:43 PM

What would be the advantages/disadvantages of going from a 190 to a 180 rear tire on my 954?
Thanks Ken


People sleep peacably in their beds at night because rough men stand ready to do violence on their behalf.
2004 R1
2002 CBR954RR
2002 CR250R
1991 KX500
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  (#2)
The last urrbendah
 
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Join Date: February 5, 2003
Location: Kickin' it with Stevie Janowski
April 23, 2003, 01:52 PM

Ken,

It's not really the tire width that makes the big difference, more so the actual height and profile of the tire. The profile of a 190/50 tire is lower and not as rounded as that of the 180/55 rear. With the 180/55, you can expect quicker "turn in" ability and a bike that will handle slightly better.

When I swapped to the 180/55 on my RC, it took a LONG time to get used to, almost 1500 miles to be exact. The bike feels almost unstable due to the more rounded profile and tendancy to fall in to a corner. However, once you get used to this, you realize that it's actually much more enjoyable and takes much less effort to ride.

Some people will argue that switching to a 180/55 rear takes away some of the contact patch offered by a 190/50. However, a report in CycleWorld a couple years back proved this false by testing several different tires and sizes. They found that the 180/55 actually provided the same contact patch while in a corner due to it's more rounded profile. The only place any grip was lost was in the straightline handling category.

There are some tires out there now that are available in the 190/55 tire size, however manufactuers have yet to produce one in a street compound.

My opinion of it all. I'm glad that I switched to the 180/55 rear and would do so again. As a matter of fact, I am doing so again because of a stupid nail.


13 KTM 200 XC-W
15 KTM 350 XC-F

I might have a dirt bike problem.
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  (#3)
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April 23, 2003, 01:56 PM

disadvantges, slightly less stable, if/when you whack it WOT,...

advantage, much better turn-in and roll-over in the twisties,...

ie, the bike will 'steer' more quickly,...

a friend did this with his ZX9 and was much pleased w/the results.

~ Greg



“To announce that there must be no criticism of the president,
or that we are to stand by the president right or wrong, is not
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  (#4)
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April 23, 2003, 01:59 PM

man, that stillie's a blow-hard,.... :o
[try to keep it to 5,000 werds or less,....]

but, what do I know??? :dunno:

I've got a 180 rear, with PVM WHEELS!!!



“To announce that there must be no criticism of the president,
or that we are to stand by the president right or wrong, is not
only unpatriotic and servile, but is morally treasonable to the
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  (#5)
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April 23, 2003, 02:22 PM

I went to a 180 on the Eyeabuser and it flat fuggin rocks!!!

The bike feels like it dropped 50lbs in handling. Though your bike is very light to begin with.

It made my Rosie O'donnel feel like a Delta Burke!


If you drink and ride, I have no pity for you. At all, ever.
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  (#6)
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April 23, 2003, 02:25 PM

The only bad thing I have noticed is that heeled way over it's a tad less stable. I have ridden the edge of the tire once and after a loud WHOOOOORP...I realized I was close to going ass over tea kettle. It's much better in the switch backs and tight stuff....highspeed lean overs are not as planted. Far from bad...but don't feel as tight as they were.


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  (#7)
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April 24, 2003, 11:12 AM

Thanks for takin the time gentlemen!!!!!!!!!!
Peace


People sleep peacably in their beds at night because rough men stand ready to do violence on their behalf.
2004 R1
2002 CBR954RR
2002 CR250R
1991 KX500
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