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Author Topic: Lifespan of tires  (Read 5267 times)

trolle

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Lifespan of tires
« on: March 05, 2007, 04:21:48 AM »
Hi

In the spring of 2005 the rear tire was changed. It has now done 6000+ miles (10,000+ km) and has no pattern left at the middle, whereas the pattern still remains on the shoulders. As the need for a deep pattern is on the shoulders, I have no qualms using the rear tire for a season more. My question is how long a distance a rear tire on a r65 is expected to last considiring it is driven by an elderly, sedated gentleman in his late fifties.

Another thing: I have just purchased a device for warming my handles, it consists of two heating bodies to be placed inside the handlebar tube, one at each side. The vendor claims that this is a principle used on snowscooters. If any of you good people out there have had any experience with such contraceptions I would be glad to hear of it.

greetings from a grey north, where spring is only a few weeks away

airhead

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Re: Lifespan of tires
« Reply #1 on: March 05, 2007, 05:51:04 AM »
I would have to strongly challenge your view the tyre is still serviceable simply because you believe you will be only using the shoulder tread. Have you considered braking?? Lock up that rear, which with a little water on the road is really likely with no tread to get rid of it, and your bike could swap ends before you utter 'If only I'd.......'
Also the transition while cornering, from slick to tread, can make handling twitchy. And how about 'whitelining' from road imperfections and markings.
So if you want to be an elderly, sedated gentleman in his late sixties, do yourself a favour and shell out for a new tyre, your next of kin will appreciate it!!

Bill...............;-)

Chris_in_BC

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Re: Lifespan of tires
« Reply #2 on: March 05, 2007, 11:48:45 AM »
Trolle,
 I would agree with Bill. You are potentially pushing your luck with a bald tyre. Probably also illegal where your ride too. If you could guarantee you only rode on absolutely dry roads, you might manage. But that isn't really practical. 6K miles out of the rear is lower than I normally get, but I don't know the quality of your tyre, speeds you ride or the tyre pressure you were running.

I need to ask a friend who is using a similar heat grip set-up to you on his KLR. My only thoughts is that throttle control on a snowmobile is via a lever (like a lawnmower) so it doesn't have the extra sleeve on the throttle side like the BMW and probably most motorcycles. Therefore I would wonder if the heat output on the throttle side would be significantly less. Most heated grip setups wraparound the handlebars but just under the rubber grips.
Chris

scottyintex

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Re: Lifespan of tires
« Reply #3 on: March 05, 2007, 12:11:36 PM »
Tires lose their traction before they are wore out. Sounds like yours have lost a lot of their traction. Cars are suppose to be ok as long as you have 2/32's of tread left. However, those who drive in a lot of rain or snow should consider 5/32 ‘s as their replacement mark. Go read what Consumers’s Union has to say about tread wear. But trust me when I say that hydroplaning is a thrill you can do without; I speak from experience. It tends to stain one’s underwear and your lucky if that is all it does. :o

Offline Bob_Roller

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Re: Lifespan of tires
« Reply #4 on: March 05, 2007, 06:23:49 PM »
I agree with the other posts, and plus I'll add my observation, the only flat tires I have gotten is when the tire was worn to the wear bar, or beyond. If you consider that your continued well being is riding on that small contact patch your tire has with the road surface.
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Offline Rob Valdez 79 R65

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Re: Lifespan of tires
« Reply #5 on: March 05, 2007, 07:36:19 PM »
Please get a new tire, trolle.  I don't want to hear of one of my oldest R65 buddies getting hurt from excessive frugle-ness.

About the handgrip heaters: If they go inside the handlebar, they have to heat up the metal before getting to the rubber grip.  There are other options out there.  Some go between the grip and the handlebar (I can't imagine this, as hard as it is to put a grip on the bar).  Others wrap around the outside of the grip with a velcro closure.
And you could get the BMW models after you win the lottery...

But for the ultimate in extended-season riding, this is what you want:
http://www.hippohands.com/Hippo%20Hands.htm

I have something similar, and they make them for snowmobile, but mine are for bikes, having outlets for mirrors and such.  Mine are also 20 years old, so I don't know where you would get them anymore:
http://www.pbase.com/tomfarr/image/67047578/medium
Look around that page and you will see other photos of them, on my bike, as well.
« Last Edit: March 05, 2007, 07:37:15 PM by Rob_Valdez_79_R65 »

Offline Justin B.

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Re: Lifespan of tires
« Reply #6 on: March 05, 2007, 07:42:07 PM »
Trolle, I must agree with these guys as well - and I'm "King" of the cheap Bastards!  If available where you are at try a Macadam or Dunlop Elite II.  Both of these will make your cheap side smile while still having a bit of grip.  As long as you don't ride real sporty you should get over 10k miles out of a rear, at least I do...
Justin B.

2004 BMW R1150RT
1981 R100RT - Summer bike, NEKKID!!!

Offline Ed Miller

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Re: Lifespan of tires
« Reply #7 on: March 05, 2007, 09:18:03 PM »
I think I get about 8K off my spitfire rear tire.  I don't wait until the tread is gone to change it.

Ed Miller
'81 r65
Falls City, OR

Offline Bob_Roller

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Re: Lifespan of tires
« Reply #8 on: March 05, 2007, 10:24:16 PM »
I got 10,000 miles on my last Metzeler ME 88, and averaged 8-9,000 miles on Metzeler ME99's ( now Lazertec). If their's an area that I won't scrimp on, and that's tires and brakes!
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Chris_in_BC

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Re: Lifespan of tires
« Reply #9 on: March 06, 2007, 12:35:07 AM »
Quote
About the handgrip heaters: If they go inside the handlebar, they have to heat up the metal before getting to the rubber grip.  There are other options out there.  Some go between the grip and the handlebar (I can't imagine this, as hard as it is to put a grip on the bar).  
l.
Talked with my friend. The slugs that fit inside the bars work well for him. Take longer than the type that fit just under the grips to heat up, but once they do, he says they get quite hot. He said he didn't notice a difference between left and right, but felt it was because you hold on to the right firmly, while normally a looser grip on the left, (not all the time though  :o )

I have the type that fits under the grips on two bikes. You need to get new grips as well at time of installation as on the old ones, the rubber has generally hardened making life difficult. Dual Star  http://www.dual-star.com/index2/Rider/heated_grip_kit3.htm   sell great heated grips kits ($30.00) plus new grips at around $8.00, plus high temp. glue at $5.00, so not major money.
On the third bike, I have older Oxford grips that come built with the heater coils already inside a grip. These are more expensive but you don't have to assemble it yourself. http://www.lockitt.com/AccessoriesGrips3.htm  Haven't been at their site in a while, see price includes a variable temp controller as well. So maybe not that much more expensive. Although at 2amps max. per side, that is around 56 watts.
Chris

trolle

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Re: Lifespan of tires
« Reply #10 on: March 06, 2007, 08:53:09 AM »
thank you all for a very enlightning discussion - I got what I came for.

Now, I have decided to purchase a new set of tires; either Metzeler ME11 90/90-18TL 51H on the front and ME77 4.00-18TL 64H on the rear, or Bridgestone Battleax BT45 100/80 r18 53H on front and 4.00 r18 64H on the rear. Any thoughts on that?

greetings from a rainy and cold north looking forward to trying my new heated handlebars

trolle

Offline Semper Gumby

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Re: Lifespan of tires
« Reply #11 on: March 06, 2007, 10:11:38 AM »
Nobody believes me but I got 20,000 out of a set of Macadams (120/90H18 rear and 100/90H18 front).

I've got 10,000 on my current Macadam rear tire and the 110/90H18 I've got in the front looks hardly worn at all.  

BTW - I am religious about tire pressures and generally don't ride over 70 MPH for long periods of time.

My .02 - other than the obvious - heat is what destroys tires.  Riding fast creates heat.  Under-inflation causes heat.  Keep 'em cool for long life.   8-)

Now if you are going into the twisties then you want them warm for maximum adhesion.  Cold tires in the twisties is a BAD thing.  If you spend a lot of time in the twisties then your tires are going to wear out faster.  THIS IS OK.  That is what they are there for - to keep you out of the DITCH.  Please buy the best tires you can afford.

'nuff said.
Bill Gould ?1980/03 R65 When at first you don't succeed....Moo!

Offline Bob_Roller

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Re: Lifespan of tires
« Reply #12 on: March 06, 2007, 12:02:59 PM »
I'll add that you need to regularly check your tire pressures with an accurate gauge, at least once a week during the riding season. My observation has been that tube type tires lose more air the hotter it gets. During the winter, I only add air every 3-4 weeks, but during the summer, I need to add air at least every week. If you live in a hot environment, that will take it's toll on accelerating the rubber hardening process, as well as if the bike is kept outside and exposed to sunlight.
« Last Edit: March 06, 2007, 02:22:03 PM by Bob_Roller »
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

trolle

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Re: Lifespan of tires
« Reply #13 on: March 11, 2007, 04:15:27 PM »
Well now I have ordered a 110/80-18 BT45 Bridgestone for the front  and a 4.0 18 BT45 for the rear.

The slugs work very well - I did a short trip lasting an hour today in 45F and did not have cold hands afterwards, as a matter of fact my dress was almost too warm.

One thing though, the slugs could only be driven three quarters into the handlebar so now the bar is appr. three inches wider than before.

greetings from a north where spring has just started although temp. still are below 50 F

trolle

SCJJR65

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Re: Lifespan of tires
« Reply #14 on: March 11, 2007, 04:42:28 PM »
Trolle, I have a set of Battlax tires on Britta, and I'm quite pleased with the performance and mileage I am getting out of them.   I'm approaching 10k miles on the tires, and they don't appear to be showing any adverse wear so far.  Of course, I don't ride Britta like a bat out of hell, either!  Most are just commuting mileage to be honest, but when I do come upon some curves, I always try to give Britta a chance to unwind a bit!   ;)
« Last Edit: March 11, 2007, 04:43:24 PM by SCJJR65 »