Horizons Unlimited, the website for motorcycle travellers.    
in cooperation with
Quality Touring equipment worldwide.
 
Supported expeditions across the globe. Become one of the last true adventurers with Kudu Expedtions!
Tip Jar
Support HU with a tip! Is HU useful and helpful? Please help support us with a tip! Or
be a Member!
Navigation
Art
Amazon

Buy your books and goodies from Amazon - but start at the HU Books Search page
Buy your books and goodies from Amazon.
and we get a small percentage of your purchases - and it costs you nothing! Thanks!

 
Go Back   The HUBB > Technical, Bike forums > Yamaha Tech
Contact Overland Solutions for all your custom modifications and setup for overland travel.  Follow the DAKAR 2010 with South America Motorbike Tours  
Search 

Search tips

Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1  
Old 3rd August 2007
ade.d ade.d is offline
HUBB regular
 
Join Date: Jun 2007
Location: notts
Posts: 37
tyre warning

just changed from bridgestone bt45 battleaxe to bridgestone gritty tyres on my tt600r.within 2 miles of my first outing at about 10 mph on a left hand bend the front tyre went from under me,they just let go!the tyres are road legal enduro knobblies and i think are UNSAFE for tarmac use.the bike went into the other lane and i skidded 10 yards on my ass,sever road rash to knees and elbows,pulled something in my shoulder.ive had loads of bikes with allsorts of tyres and never encounted this,the road surface was fine and no sign of deisel.no damage to the bike except slight fork twist and scrathed bar end. wish id had somemore bt45,they are great for all but wet offroad.
Reply With Quote
  #2  
Old 3rd August 2007
bruken bruken is offline
Veteran HUBBer
 
Join Date: Apr 2003
Location: Manchester UK
Posts: 140
Owww. Watch the sheets now too. Oww.
Reply With Quote
  #3  
Old 3rd August 2007
Walkabout Walkabout is offline
Veteran HUBBer
 
Join Date: Mar 2007
Location: UK
Posts: 2,038
Tyres scrubbed in?

Ade,
That is a bitch - too late to ask it now, but are you sure that the tyres were "scrubbed in"?;- first 50 miles or so gently, to get the release mould off the tyre surfaces.
The way you tell it you might have come straight from the tyre fitting shop?

Get better soon! to
__________________
Dave
Reply With Quote
  #4  
Old 3rd August 2007
ade.d ade.d is offline
HUBB regular
 
Join Date: Jun 2007
Location: notts
Posts: 37
hi dave,yes i was scrubbing them in.i normaly take that corner at 20mph as i know it well,regular route.the front tyre literally slid from under me.ive looked on the web and nobody has a good word for this tyre.just my luck .i have no confidence in them now and shall be changing again,when i can bend my limbs again,lol.im walking around like a incontenant 90 year old.
Reply With Quote
  #5  
Old 25th November 2008
moto_psycho moto_psycho is offline
New on the HUBB
 
Join Date: Oct 2008
Location: ipswich
Posts: 8
come on mate, you have to look at the tyres and think for yourself a little bit, look at the contact patch on cornering, its absolutely tiny, bridgestone gritty are basically road legal MX tyres.

it aint the tyres fault, you were riding them too hard for what they were designed for
Reply With Quote
  #6  
Old 25th November 2008
Big Yellow Tractor Big Yellow Tractor is offline
Veteran HUBBer
 
Join Date: Jan 2008
Location: UK
Posts: 244
Sorry to hear about your off,

I've used a Gritty (ED661) front on the DRZ and found it no better or worse than any other enduro / mx tyre. They all rumble and wobble a bit and will give the sphincter some exercise on wet tarmac if you push too hard.

I run mooses so the first few miles on a new tyre for me are made worse by the tyre being covered in rhino-munk.

I think your tyre was contaminated or not scrubbed in or maybe way too hard. Check the pressure; sometimes tyre fitters get them up to 45psi to seat the bead.
Reply With Quote
  #7  
Old 26th November 2008
Scottish Sam Scottish Sam is offline
New on the HUBB
 
Join Date: Dec 2007
Posts: 14
Sorry to hear about your off mate.

Just a few thoughts................what pressure did you run the Gritty's at?
if yourun them the same pressure as your ordinary trail/road tyres you will certainly come a cropper. I suggest about 15 to 19psi max. Gritty's are an OFF ROAD bias tyre made road legal to allow enduro competitors to ride legally on road between sections of an enduro competition.

Once you try them OFF ROAD you willnot go back to trail/road tyres.

Might I suggest the best compromise I have foung in the Pirreli MT21 rallye cross fun at the above pressures 15 to 19psi.

Hope this helps.

Regards Sam.

(tyre changing and bike prep demo at UK meet)
Reply With Quote
  #8  
Old 26th November 2008
oldbmw oldbmw is offline
Veteran HUBBer
 
Join Date: Feb 2006
Posts: 880
Quote:
Originally Posted by ade.d View Post
hi dave,yes i was scrubbing them in.i normaly take that corner at 20mph as i know it well,regular route.the front tyre literally slid from under me.ive looked on the web and nobody has a good word for this tyre.just my luck .i have no confidence in them now and shall be changing again,when i can bend my limbs again,lol.im walking around like a incontenant 90 year old.
I learned this lesson the hard way also. Years ago I had a new set of tyres fitted to my car. 20 miles away an Audi stopped in front of me. weather dry summer day. It felt like I was on black ice, no traction at all, road surface perfect, was not even a hard stop let alone emergency. I rammed it
To be safe you need to allow a couple hundred miles to scrub in new tyre, and at ten miles they are nowhere near 50% capable.
Besides, whats wrong with incontinent 90 year olds
Reply With Quote
  #9  
Old 27th November 2008
Motu Motu is offline
HUBB regular
 
Join Date: Nov 2003
Location: New Zealand
Posts: 32
I take my new tyres on a gravel road first,that gets the slippery stuff off them.Mind you,I only have about three corners before I find some gravel.
Reply With Quote
  #10  
Old 27th November 2008
mollydog's Avatar
mollydog mollydog is offline
Veteran HUBBer
 
Join Date: Aug 2003
Location: california
Posts: 1,470
What PRESSURE were you running? Come on now, tell the truth?

Last edited by mollydog : 26th March 2009 at 20:42.
Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
R80/7 tyre size for offroad. Boxer2V BMW Tech 4 28th June 2007 21:13
Tyre change 275/70/16 LANDCRUISER mike 1 Sahara Travel Forum 1 3rd February 2003 21:43
BFGoodrich All-Terrain T/A 235/85 R16 tyre pressures Terry Davies Sahara Travel Forum 0 12th February 2002 21:53


All times are GMT +1. The time now is 05:50.

Top of page Top Home Shop the Souk Grant & Susan's RTW Trip Subscribe to the E-zine HUBB Forum Community
Travellers Stories Trip Planning Books Links Search Privacy Policy Advertise on HU

Your comments and questions about the site are welcome. Contact Horizons Unlimited.
All text and photographs are copyright © Grant and Susan Johnson, 1987-, or their respective authors. All Rights Reserved.

Search Engine Optimization by vBSEO 3.0.0 RC6