Jump to content

 

- - - - -

Tyre Pressures


  • You cannot reply to this topic
7 replies to this topic

#1 broony

    Advanced Member

  • Members
  • PipPipPip
  • 118 posts
  • Location:Bonnie Scotland
  • Bike:BSA C15,TY250f
  • Club:Edin. St Georges

Posted 27 October 2010 - 06:19 AM

Just about got the Bantam finished and was wondering what tyre pressures
to run.My bike is a D7 running Pirelli tyres,I was giving a figure of 6psi
front and 3/4psi rear,but is it ok to run them that low with tubes??
cheers the noo Brian
Drawn on a fag packet,built in a shed

#2 Old trials fanatic

    Advanced Member

  • Members
  • PipPipPip
  • 2,061 posts
  • Location:Derbyshire
  • Bike:James Bulto TY Ossa
  • Club:Peak Classic, Dales Classic, AA, Tufty.

Posted 27 October 2010 - 08:37 AM

Pressures sound about right but why did you choose Pirelli ? terrible tyres for trials IMHO. Personally would always use Michelin front and IRC rear at the pressures you state. With Pirellis you could probably let all the air out and still get less grip than decent tyres at road pressures. Good luck.
The Victor Meldrew of Trials Central. Dont believe everything you read about me because the truth is much much worse !! LOL

#3 schweizmeister

    Member

  • Members
  • PipPip
  • 42 posts
  • Location:Mid Lothian
  • Bike:240 Fantic, TZ250
  • Club:Melville, SCRMC

Posted 27 October 2010 - 12:25 PM

I would go with 7 & 4 for normal use, Brian. Shouldn't have any problems.
6 & 3 or 4 if you know the trial ground is forgiving and you are not likely to hit rocks hard.
Bear in mind the accuracy of the tyre pressure gauge you are using.

oh... and watch out for tyre creep :thumbup:

#4 broony

    Advanced Member

  • Members
  • PipPipPip
  • 118 posts
  • Location:Bonnie Scotland
  • Bike:BSA C15,TY250f
  • Club:Edin. St Georges

Posted 27 October 2010 - 06:34 PM

Went for the Pirellis as I,m new to the sport and didn't know any better,If they are not that
great I'll not know any better till I get used to the bike and its lack of both speed and power.
Only cost me £90(new) the pair so didn't break the bank.I'll give the tyre pressure a go Brian
and hopefully have the bike ready for my first trial at Gifford in November.
cheers the noo Brian
Drawn on a fag packet,built in a shed

#5 Old trials fanatic

    Advanced Member

  • Members
  • PipPipPip
  • 2,061 posts
  • Location:Derbyshire
  • Bike:James Bulto TY Ossa
  • Club:Peak Classic, Dales Classic, AA, Tufty.

Posted 27 October 2010 - 06:56 PM

View Postbroony, on 27 October 2010 - 06:34 PM, said:

Went for the Pirellis as I,m new to the sport and didn't know any better,If they are not that
great I'll not know any better till I get used to the bike and its lack of both speed and power.
Only cost me £90(new) the pair so didn't break the bank.I'll give the tyre pressure a go Brian
and hopefully have the bike ready for my first trial at Gifford in November.
cheers the noo Brian

Good luck in your first trial on the bantam. Pirellis £90 new IRC rear £72 Michlin front £50 thats £122 for the pair :chairfall: . Pays your money takes your choice.

Enjoy your bantam :thumbup:
The Victor Meldrew of Trials Central. Dont believe everything you read about me because the truth is much much worse !! LOL

#6 Vinnied

    Advanced Member

  • Site Supporter
  • 641 posts
  • Location:Shankill Dublin Ireland
  • Bike:280 Gas Gas
  • Club:Dublin & District MCC 100 years old 2007

Posted 29 October 2010 - 11:39 AM

View PostOld trials fanatic, on 27 October 2010 - 08:37 AM, said:

Pressures sound about right but why did you choose Pirelli ? terrible tyres for trials IMHO. Personally would always use Michelin front and IRC rear at the pressures you state. With Pirellis you could probably let all the air out and still get less grip than decent tyres at road pressures. Good luck.


Why the IRC OTF

Vinnie

#7 bobtlr

    Advanced Member

  • Members
  • PipPipPip
  • 366 posts
  • Bike:sherco 3.2 tlr 250
  • Club:KAMCE Torhout

Posted 29 October 2010 - 06:52 PM

its the best tyre for classic trials it grips better in mud and on slimy rocks
in summer it gets a bit to soft but thats not so bad

best regards bob

#8 Old trials fanatic

    Advanced Member

  • Members
  • PipPipPip
  • 2,061 posts
  • Location:Derbyshire
  • Bike:James Bulto TY Ossa
  • Club:Peak Classic, Dales Classic, AA, Tufty.

Posted 29 October 2010 - 09:03 PM

Wear rate is the best too. Grips well even after 6 months :thumbup: wouldnt use anything else on the rear.
The Victor Meldrew of Trials Central. Dont believe everything you read about me because the truth is much much worse !! LOL





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users