Ducati Sporting Club UK
 
 
Thread Tools Search this Thread Display Modes
Old 29-Sep-2004, 10:43   #1
dickieducati dickieducati is offline
Registered Forum User
BSB Star
dickieducati's Avatar
 
Posts: 5,018
Join Date: Jun 2003
Location: Chelmsford, Essex
Mood: the rain in spain falls mainly on me!
contact patches at full lean.................
someone will know this i'm sure...................

does a 190/55 on a 6 inch rim give more contact patch at full lean than a 180/55 on a 5.5 inch.

i think it does but not sure???
Reply
Old 29-Sep-2004, 10:54   #2
Rattler Rattler is offline
Registered Forum User
WSB Hero
Rattler's Avatar
 
Posts: 8,863
Join Date: May 2002
Location: Boys Town
Mood: www.cantbearsed.co.uk
I reckon its the same!!!
Reply
Old 29-Sep-2004, 13:50   #3
Felix Felix is offline
Registered Forum User
Ducati Meccanica
 
Posts: 2,467
Join Date: Dec 2001
Location: North Yorkshire
Mood: Is 112 dB loud enough?? What??
If could actually notice the difference, you'd already know!
Reply
Old 29-Sep-2004, 14:58   #4
weeveetwin weeveetwin is offline
Registered Forum User
500SD
weeveetwin's Avatar
 
Posts: 779
Join Date: Apr 2004
Location: Wearside
My two-pennorth..
Because of the greater radius of the 190/55, I reckon you'd have more area in contact with the track/road - but less 'ground pressure' per sq mm because the bike's weight is more widely spread. (so on a wet/slippery surface you'd actually have less grip).

I could well be wrong though! One for Shazzam I think..
Reply
Old 29-Sep-2004, 14:59   #5
dickieducati dickieducati is offline
Registered Forum User
BSB Star
dickieducati's Avatar
 
Posts: 5,018
Join Date: Jun 2003
Location: Chelmsford, Essex
Mood: the rain in spain falls mainly on me!
yes i await an essay at some stage, although i'm kind of with your thinking.
Reply
Old 29-Sep-2004, 15:27   #6
David Cook David Cook is offline
Registered Forum User
Mille
 
Posts: 371
Join Date: Jun 2001
Location: Home Counties
Mood: Yoi
My 996SPS came with a 5.5"/190 rear setup which was changed to a 180 for all the "advertised" advantages. I then changed to mags and had a 6" rear but maintained a 180 tyre.

I've now got a 190 (D208RR) for Catalunya in October, having been convinced by Dunlops Sales Manager that the benefits are noticeable.
Reply
Old 29-Sep-2004, 15:33   #7
Harv748 Harv748 is offline
Registered Forum User
Big Twin
Harv748's Avatar
 
Posts: 1,882
Join Date: May 2002
Having just bought a bike with what looks like a 6in mag rear, fitted with 180 (BT0012ss (?))...why does the tyre in general look wider and flatter than my 748 fitted with standard rear wheel and a 180 (pirelli diablo)?

Does the slightly wider wheel flatten the profile of the 180 tyre, or is the difference I can visually see due to the diference in tyre profiles from make to make?

Does that make any sense at all?!?!?
Reply
Old 29-Sep-2004, 15:44   #8
dickieducati dickieducati is offline
Registered Forum User
BSB Star
dickieducati's Avatar
 
Posts: 5,018
Join Date: Jun 2003
Location: Chelmsford, Essex
Mood: the rain in spain falls mainly on me!
pretty much answered your own question. it should have a 190 on if its a 6inch rim, the profile (as you correctly noticed) will be flatter as the tyre is being widened out. pop a 190/55 on and it should turn in better.
Reply
Old 29-Sep-2004, 16:08   #9
Harv748 Harv748 is offline
Registered Forum User
Big Twin
Harv748's Avatar
 
Posts: 1,882
Join Date: May 2002
Well, thats what I thought...but then why do people stick a 180 tyre on a 6 inch rim to quicken the steering, if, as you suggest, it flattens out due to the wider rim???
Reply
Old 29-Sep-2004, 16:18   #10
dickieducati dickieducati is offline
Registered Forum User
BSB Star
dickieducati's Avatar
 
Posts: 5,018
Join Date: Jun 2003
Location: Chelmsford, Essex
Mood: the rain in spain falls mainly on me!
standard rims on a ducati are 5.5 inch
Reply
Reply
  
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes
Postbit Selector

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Recent Posts - Contact Us - DSC Home - Archive - Top
Powered by vBulletin 3.5.4 - Copyright © 2000 - 2024, Jelsoft Enterprises Ltd. - © Ducati Sporting Club UK - All times are GMT +1. The time now is 07:27.