Date: 30-04-24  Time: 21:09 pm

Author Topic: Not the usual tyre related question  (Read 3102 times)

1967fazer

  • Club Racer
  • ****
  • Posts: 261
  • Its not a Rossi rep!
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Not the usual tyre related question
« on: 11 March 2012, 11:54:01 pm »
I have noticed when I've been out on the bike for a blast and I check the wear  on the edge of the tyres, to see how heroic I've been, the rear tyre always gets close to the edge of the tread and the front still has a good inch to go. Is this because the bike is currently biased to the rear on the suspension (or seems to be) or is it down to my riding style on the Fazer?  My CBR6 used to scrub the tyres fairly equally with a slight bias towards the front. I have found myself using the power of the bike to punch out of the corners, whereas on the CBR I was carrying more corner speed. Any thoughts?  Anyone else found this issue on their bikes? Any suggestions on rectifying this minor but strange issue?

ghostbiker

  • Muck Spreader
  • GP Hero
  • ******
  • Posts: 3,437
    • Main bike:
      FZS 1000 Gen1
    • - GSX600F Katana
    • View Profile
Re: Not the usual tyre related question
« Reply #1 on: 12 March 2012, 01:24:48 am »
No idea, I know I have no chicken strips on rear but still a fair size one on front. It's allways been like that on the fazer for me and on every brand of tyre I have fitted. I personally like it as I would prefer to run out of rubber on the rear long before I run out of rubber on the front :P

As for why? No clue. Some bikes I have had are the same some are not /shrug.

macmivvi

  • CBT Wobbler
  • *
  • Posts: 39
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: Not the usual tyre related question
« Reply #2 on: 12 March 2012, 10:21:59 am »
Different tyre profiles.

Probably find CBR ran a 65 profile front , dont worry you are still a Hero.

fazersharp

  • GP Hero
  • ******
  • Posts: 6,921
  • 10 stone Racing Snake
    • Main bike:
      FZS600 98-99
    • View Profile
Re: Not the usual tyre related question
« Reply #3 on: 12 March 2012, 03:15:54 pm »
I see the same on my Front vs Rear
I don't do rain or threat there of. dry rider only with no shame.

Ghoti

  • DAS Born Again
  • **
  • Posts: 89
    • Main bike:
      FZS 1000 Gen1
    • - Triumph Speed4
    • View Profile
Re: Not the usual tyre related question
« Reply #4 on: 12 March 2012, 03:37:08 pm »
I noticed this, well, after jacking up the rear I noticed the front more scrubbed to match the rear, so I guess it is the steering geometry (assuming you have standard rear and not dropped the front).

A CBR will have a steeper steering angle (like a Fazer that has had the back raised, front lowered or both), so will wear tyres more evenly.

1967fazer

  • Club Racer
  • ****
  • Posts: 261
  • Its not a Rossi rep!
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: Not the usual tyre related question
« Reply #5 on: 12 March 2012, 07:50:06 pm »
Oh good, at least its not just my weird riding style :) , hoping to be changing rear shock and jacking up bike this week, so will see if that makes a difference. Its not an issue particularly, just one of those "why does it do that" thoughts.

Falcon 269

  • GP Hero
  • ******
  • Posts: 5,899
    • Main bike:
      FZS 1000 Gen1
    • - Yamaha R1 1999
    • View Profile
Re: Not the usual tyre related question
« Reply #6 on: 13 March 2012, 07:51:29 am »
How hard do you brake?  What front tyre pressure are you running?  Do you trail brake into corners?  I suspect all these, and more, factor into the size of the front tyre 'chicken strip'.  To look at mine, you'd think I never go round corners but the rear says otherwise. :)

sadlonelygit

  • GP Hero
  • ******
  • Posts: 1,123
    • Main bike:
      FZS 1000 Gen1
    • - katana 1100
    • View Profile
Re: Not the usual tyre related question
« Reply #7 on: 13 March 2012, 01:23:25 pm »
as has been mentioned, the more rear ride height/less front will make the bike turn quicker and will change the slip angle of the front and rear tyre. however as the front and rear tyres have very different profiles, be warned that trying to use every last mm of front tyre (on the road) is a very brave thing to do!
for me i've found that the rear is to/off the edge but a good 5mm on the front, with a nice neutral feel to the bike.
The problem with socialism is that sooner or later you run out of other people's money!

Kosmic Kartman

  • Photo comp trophy
    July & September 2010
  • GP Hero
  • ******
  • Posts: 2,396
  • Champion on two, three & four wheels
    • Main bike:
      FZS 1000 Gen1
    • - KTM640LC4SM, XRX125SM
    • View Profile
    • Trackart.co.uk
Re: Not the usual tyre related question
« Reply #8 on: 13 March 2012, 11:53:04 pm »
As said it's a lot to do with riding styles, set up and geometry, both on bike and tyre. I hardly get to the rear edge of my Fazer rear tyre. There's about another 5mm before I get there, but on the KTM the edges are starting to peel and rip. I wouldn't say I ride one harder than the other. Tyre choice is a factor. On the Fazer I have Pirelli Diablos and on the KTM Super Dragon Corsa. One has good grip and the other has even better grip.
Some say that he eats habanero chilli peppers dipped in oil of capsaicin for extra bite and that his pyjamas are made from Nomex. All we know is, he's called Ad the Bad

pitternator

  • "I'll be back"
  • GP Hero
  • ******
  • Posts: 6,228
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: Not the usual tyre related question
« Reply #9 on: 14 March 2012, 07:14:55 am »
My rear will wear right to the edge, but even after serious decking of the pegs/ crash bungs( track day last sept ), where the absolute limit of lean angle was explored...the front will still have tread left on the front. As such , you can take it as read that you wont ever get the front tyre edge " scrubbed in" ...unless the bike is sliding down the road !
On the road it will be just odd occasions you will scrape the pegs , maybe as much from suspension compressing after a sharp turn in, as actually requiring that amount of lean. For some time I never got the pegs down after fitting weight balanced suspension, but now can do so regularly. But the bike dont really want to go too far past this as if something solid hits down,then it will either bounce the bike off line or even lift tyre off the road....both will be bad !
So my advice is ...dont worry about it , just ride the bike as you want ,
cheers

1967fazer

  • Club Racer
  • ****
  • Posts: 261
  • Its not a Rossi rep!
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: Not the usual tyre related question
« Reply #10 on: 15 March 2012, 09:01:42 pm »
Its not so much been an issue, more a curiousity, especially as my CBR used to get to the edges of the front tyre and still have a little left on the rear. Guess its just a case of two different styles of bike, which is kind of why I changed to a Fazer, a bit more relaxing to ride.