Switchint to a 180

Can I switch to a 180/50 from a stock 190/50 without having to make additional adjustments? Is a 190/55 a better alternative? I am new to this and trying to keep it simple for my second track day. Thanks for your input. Here are the bikes:




Modified by socal at 11:11 AM 3/19/2005

Depends upon the rear wheel width (among other things).

Your 999 should have come with an OEM 5.5" rear rim and a 190/50 ZR17 fitted (I believe). Why Ducati does this...most of us don't know...but the better tire for a 5.5" rim is a 180.

Not sure what the Honda rear tire width is, but if it is a 5.5" rim, then the same logic should apply.

The 180 should help your Duc corner better because of a better fit, without pinching the tire so that the profile changes.

I am by no means an expert...but this is what I've been told. Others feel free to chime in!

the 180 tire should also be about 30 dollars less to.

Stealership says the Honda OEM rear rim is 6". OEM rear tyre is 190/50. Should I then consider a 180/55??

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by socal &raquo;</TD></TR><TR><TD CLASS="quote">Stealership says the Honda OEM rear rim is 6". Should I then consider a 180/55?? </TD></TR></TABLE>

No use a 190 on a 6.0 to keep the same profile. You can use a 180 on a 6.0 but look at it this way, a 180 fits a 5.5" and a 190 is ten mm wider, which is about a half an inch, which is how much wider the rim is on a 6.0". If you run a 180 on a 5.5 it will have a slightly flater profile. Some guys do, but a 190 was made to fit a 6.0".

Are you suggesting a 190/50 for the Honda's 6" rear wheel?

i have a six in rim on my Aprilia and a 180/55 works great.

I just put a 190/55 on my 6'" rear wheel.

What he is trying to say is that it will make a difference.
Not a detrimental difference, but it will affect the handling a bit.

Honesty entire books have been written about what you are asking.

My recommendation is to keep things the way you expect them to be (i.e. stock) until you have had a chance to really dig into the subject.

I found this to help us with the topic:

http://www.sportrider.com/tech/tires/146_0206_size/

This article seems to support 180/50 as a proper size for the 999 and a 190/50 as the correct size for the CBR1000RR.



Modified by socal at 2:03 PM 3/19/2005

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by socal &raquo;</TD></TR><TR><TD CLASS="quote">I found this to help us with the topic:

http://www.sportrider.com/tech/tires/146_0206_size/


Modified by socal at 1:56 PM 3/19/2005</TD></TR></TABLE>

Says exactly what I did earlier. Yes put a 190 on the 6.0 rim.

Thanks Phil.

I think you would want a 180/55. Some conversation about this. http://www.1000rr.net/forums/viewtopic.php?t=1930

I have a 190/55 Rennsport on my RR and I love it, but it's not a daily use tire. I have other bikes for that purpose.