Is it Time for a New Tyre?

Workshop tales, trials and disasters.
Maintenance tips, techniques and myths.
Technical discussion, description and outright lies

Is it Time for a New Tyre?

Postby QuangVuong » Sat Oct 19, 2013 3:01 pm

So the Spring Cycle is tomorrow, and I check over my tyres to find this. The casing has shown through on my 4 Season front tyre. Is it time I replace it? Or should I be good for 50km?
Image

This is 5cm down from the upper pic.
Image
80's Bundy
87 Kestrel 4000
88 Giant Cadex 980c
89 Centurion Carbon
89 Peugeot Carbon Pro
99 Kestrel 200 EMS

Image
User avatar
QuangVuong
 
Posts: 918
Joined: Sun Feb 24, 2013 4:04 pm
Location: Villawood, Sydney

by BNA » Sat Oct 19, 2013 3:05 pm

BNA
 

Re: Is it Time for a New Tyre?

Postby sogood » Sat Oct 19, 2013 3:05 pm

Casing = Replace.
Bianchi, Ridley, Montague, GT, Garmin and All things Apple :)
RK wrote:And that is Wikipedia - I can write my own definition.
User avatar
sogood
 
Posts: 16896
Joined: Thu Aug 31, 2006 7:31 am
Location: Sydney AU

Re: Is it Time for a New Tyre?

Postby wombatK » Sat Oct 19, 2013 4:23 pm

sogood wrote:Casing = Replace.

+1. Especially on a front tyre, don't take the risk of it going bang and you taking a tumble over the bars etc.,.
WombatK

Somebody has to do something, and it's just incredibly pathetic that it has to be us -Jerry Garcia
User avatar
wombatK
 
Posts: 5188
Joined: Thu Jul 10, 2008 9:08 pm
Location: Yagoona, AU

Re: Is it Time for a New Tyre?

Postby Nobody » Sat Oct 19, 2013 4:59 pm

Back tyre should be the worn one. New tyre should go on the front, old front to the rear, rear to the bin for best safety. That way you only ever wear out the rear. Unless of course you run different tyres on the front and rear.

http://sheldonbrown.com/tire-rotation.html
Nobody
 
Posts: 6624
Joined: Thu Sep 18, 2008 12:10 pm
Location: Sydney

Re: Is it Time for a New Tyre?

Postby QuangVuong » Sat Oct 19, 2013 5:07 pm

Already swapped tyres around. I guess I left the rear on for too long before chucking it out front. I've done 500km since switching front and rear.

I'm gonna retire the wheelset and tyres soon anyway. Would I be safe with sticking a tyre patch on the inside just for tomorrow. I don't really wanna start a new tyre only to take it off after tomorrow.
80's Bundy
87 Kestrel 4000
88 Giant Cadex 980c
89 Centurion Carbon
89 Peugeot Carbon Pro
99 Kestrel 200 EMS

Image
User avatar
QuangVuong
 
Posts: 918
Joined: Sun Feb 24, 2013 4:04 pm
Location: Villawood, Sydney

Re: Is it Time for a New Tyre?

Postby ironhanglider » Sat Oct 19, 2013 8:15 pm

QuangVuong wrote:Already swapped tyres around. I guess I left the rear on for too long before chucking it out front. I've done 500km since switching front and rear.

I'm gonna retire the wheelset and tyres soon anyway. Would I be safe with sticking a tyre patch on the inside just for tomorrow. I don't really wanna start a new tyre only to take it off after tomorrow.


You haven't read the Sheldon link. You don't put the rear tyre anywhere except the bin. In fact he recommended not rotating at all and just replacing the tyres as required.

A patch on the inside wouldn't serve any purpose. The tube holds the air, the tyre (and rim, and rim tape) holds the tube. The carcass of the tyre is the bit that holds the tube, the rubber on the surface only provides grip (and the first layer of puncture resistance).

It depends on whether you need maximum grip tomorrow, not forgetting that the mould release on a new tyre would take a while to wear off too and until then grip would be compromised.

Cheers,

Cameron
ironhanglider
 
Posts: 1049
Joined: Fri Apr 17, 2009 9:44 pm
Location: Bruce, ACT

Re: Is it Time for a New Tyre?

Postby thearthurdog » Mon Oct 21, 2013 5:39 am

Nobody wrote:Back tyre should be the worn one. New tyre should go on the front, old front to the rear, rear to the bin for best safety. That way you only ever wear out the rear. Unless of course you run different tyres on the front and rear.

http://sheldonbrown.com/tire-rotation.html

I always like to buy tyres in sets of three so I have two rears.
Cervelo s5
Giant Trinity Composite 1
http://www.crosswindmissile.blogspot.com.au
thearthurdog
 
Posts: 208
Joined: Wed Jan 25, 2012 7:51 pm

Re: Is it Time for a New Tyre?

Postby sogood » Mon Oct 21, 2013 7:00 am

thearthurdog wrote:I always like to buy tyres in sets of three so I have two rears.

I always like to have at least one tyre spare, that's all. New goes to the front and front goes to the rear while rear goes to bin.
Bianchi, Ridley, Montague, GT, Garmin and All things Apple :)
RK wrote:And that is Wikipedia - I can write my own definition.
User avatar
sogood
 
Posts: 16896
Joined: Thu Aug 31, 2006 7:31 am
Location: Sydney AU

Re: Is it Time for a New Tyre?

Postby QuangVuong » Mon Oct 21, 2013 8:05 am

I have finally retired the tyres and wheelset afer yesterdays ride. It was my first time actually using up a tyre as well.

Now, so with the 3 tyre rotation, what should it be? Two for the rear, and stick with the same front. Or as what sogood suggests.
80's Bundy
87 Kestrel 4000
88 Giant Cadex 980c
89 Centurion Carbon
89 Peugeot Carbon Pro
99 Kestrel 200 EMS

Image
User avatar
QuangVuong
 
Posts: 918
Joined: Sun Feb 24, 2013 4:04 pm
Location: Villawood, Sydney

Re: Is it Time for a New Tyre?

Postby thecaptn » Mon Oct 21, 2013 8:19 am

newest tyre on the front always. wear the rear one out, it goes in bin, front tyre goes to the rear and new tyre goes on the front as the others have said. Why would you have two tyres for the rear? is it a trike?
Pete
User avatar
thecaptn
 
Posts: 777
Joined: Wed Mar 17, 2010 7:28 pm

Re: Is it Time for a New Tyre?

Postby QuangVuong » Mon Oct 21, 2013 8:33 am

Nah, as in, when the rear wears out, I would just replace with a new one.

I got you now. thearthurdog's post was not clear. Well thanks for tha. Itll prob be a long while before I use up a set of tyres though.
80's Bundy
87 Kestrel 4000
88 Giant Cadex 980c
89 Centurion Carbon
89 Peugeot Carbon Pro
99 Kestrel 200 EMS

Image
User avatar
QuangVuong
 
Posts: 918
Joined: Sun Feb 24, 2013 4:04 pm
Location: Villawood, Sydney

Re: Is it Time for a New Tyre?

Postby ironhanglider » Mon Oct 21, 2013 3:33 pm

My understanding is that thearthurdog's method is closest to what Sheldon actually did.

Start with 3 new tyres.
Put one on the front and one on the rear. :!:
Ride.
Replace worn out rear tyre with the unused one.
Ride.
Buy three new tyres and start again.


Half worn but old front tyres are good to use on stationary trainers.

Cheers,

Cameron
ironhanglider
 
Posts: 1049
Joined: Fri Apr 17, 2009 9:44 pm
Location: Bruce, ACT

Re: Is it Time for a New Tyre?

Postby Mulger bill » Mon Oct 21, 2013 6:46 pm

QuangVuong wrote:I have finally retired the tyres and wheelset afer yesterdays ride. It was my first time actually using up a tyre as well.

Now, so with the 3 tyre rotation, what should it be? Two for the rear, and stick with the same front. Or as what sogood suggests.


Sogood is right. Fit new units F&R, when rear is shot bin it and put the front on the rear and the new unit out front.

The front wheel is what keeps you upright and safe, it should always have the best tyre on it.
...whatever the road rules, self-preservation is the absolute priority for a cyclist when mixing it with motorised traffic.
London Boy 29/12/2011
User avatar
Mulger bill
Super Mod
Super Mod
 
Posts: 25544
Joined: Sun Sep 24, 2006 2:41 pm
Location: Sunbury Vic


Return to The Shed

Who is online

Users browsing this forum: Google [Bot]



Popular Bike Shops
Torpedo 7 Torpedo7 AU
Ground Effect Ground Effect NZ
Chain Reaction Cycles CRC UK
Wiggle Wiggle UK
Ebay Ebay AU



InTouch with BNA
“Bicycles BNA Twitter
“Bicycles BNA Facebook
“Google+ BNA Google+
“Bicycles BNA Newsletter