Strange front tyre wear - BMW Luxury Touring Community
 
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post #1 of 16 Old Aug 30th, 2006, 5:31 pm Thread Starter
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Strange front tyre wear

Hi guys,

looking for a little input before I grab for the tool kit. Front tyre fitted about 18 months ago, little under 6K miles, I try and keep the pressures right front and rear 42/48, tyres are Metzler's.

When I look at the profile of the tyre it looks like I've only been going round right handers, as all the wear is on that side. I've just done a 400 Mile round trip fully loaded, Other half, camping gear, kitchen sink and 9 pairs of shoes.

Now I know the tyre should last 7-9 k, but does this sound like a fork problem? I've not dropped it yet, and I've not bumped into anything, even lightly. I have the tyre I removed before I did a 3K mile trip a while back, and didn't want to have to change tryes during the trip, I could put that on and see if I get a similar wear pattern. Ideas please.

Rgds
Mike

"For those that know, no explanation is needed,
For those that don't, no explanation is possible."

2001 K12 LT Toscana Green AKA Baby Sh*t Green
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Hardtail Chopper ( Honda CB 500 engine) in a box still!
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post #2 of 16 Old Aug 30th, 2006, 5:48 pm
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Hi Mike -

It may have to do with the road(s) being higher (crowned) in the middle. Here in the States, some folks experience left-side tire wear since we drive on the righthand side of the road. Expect the opposite would be true for you.

Guess you need to get out of the UK for a spell to even 'em up again!

Ted

Camarillo, CA
2012 Ducati Multistrada 1200S - Red
2007 R1200S - Black - Sold
2003 K1200LTC - Silver - Sold
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post #3 of 16 Old Aug 30th, 2006, 5:49 pm
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Quote:
Originally Posted by myk_edwards
Hi guys,

looking for a little input before I grab for the tool kit. Front tyre fitted about 18 months ago, little under 6K miles, I try and keep the pressures right front and rear 42/48, tyres are Metzler's.

When I look at the profile of the tyre it looks like I've only been going round right handers, as all the wear is on that side. I've just done a 400 Mile round trip fully loaded, Other half, camping gear, kitchen sink and 9 pairs of shoes.

Now I know the tyre should last 7-9 k, but does this sound like a fork problem? I've not dropped it yet, and I've not bumped into anything, even lightly. I have the tyre I removed before I did a 3K mile trip a while back, and didn't want to have to change tryes during the trip, I could put that on and see if I get a similar wear pattern. Ideas please.
Simple answer. Same as the reason we wearout the left side first here in the US.

The reason is that you always spend more time and distance leaned over in right turns in the UK, left turns in the US. Much larger radius thus time and distance on the "outside" of a turn, so more tire (tyre)wear on that side.

PS: The reason you see it more on the front tire, is that is the tire that does most of the work in turning the bike, and it is smaller so less rubber on the road in a turn than the rear tire, which basically just goes along for the ride.

I don't want to achieve immortality through my work...I want to achieve it through not dying.

David Shealey
Dandridge, TN
EX: '01 Black LT, BAT BYKE (Totaled at 110,000 miles)
IBA SS, BB, BBG, 10/10ths.
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post #4 of 16 Old Aug 30th, 2006, 5:59 pm Thread Starter
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Doh! Must be having a senior moment

Hi guys,

how stupid do i feel now... never even crossed my mind to think of the shape of the road, Doh!. Oh well, guess I have a couple hundred miles left in her, and then I'll stick a new set on for the summer.

Yes yes I know... I'll not be riding too much in the winter as I have lots of work to do around the house, so I'll maybe only get a few short weekend trips in before it's time to strip her down for a nice clean before bed time.

Guess I can sleep easy tonight knowing I've not got a front end strip down to do.

Rgds
Mike

"For those that know, no explanation is needed,
For those that don't, no explanation is possible."

2001 K12 LT Toscana Green AKA Baby Sh*t Green
Kawasaki EN500 - been sold on!
Hardtail Chopper ( Honda CB 500 engine) in a box still!
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post #5 of 16 Old Aug 30th, 2006, 7:42 pm
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Quote:
Originally Posted by myk_edwards
Hi guys,

how stupid do i feel now... never even crossed my mind to think of the shape of the road, Doh!. -----------------------------
The shape of the road only contributes a very minor amount to off-side wear, the far greater distances traveled in left turns (USA) or right turns (UK) is the big culprit. The camber in the road only affects the tires at a pretty slight angle, but turning the bike with it leaned over in turns is what wears away the tread further up.

You travel approx. 3 times further in right turns than you do left ones, reversed here in the US.

For instance: On the same turn on a two lane road, if you are turning right (UK) you are on a roughly 15 ft radius, 90 degree turn is about 24 feet of travel while leaned to the right. Turning left, approx. 5-6 feet radius, for about 9-10 feet travel in the turn while leaned left. Also, on town/residential streets I know most of us turn right (US) slower than we turn left, so probably you turn left slower than you turn right, putting even more stress on the tire treads when you are traveling the greater turn distances.

Even if you go somewhere where you experience a lot more left turns than right, most of us return the same way, so it evens out. We basically make the same number of right turns as left, so ride a lot more distance on the outside of turns than on the inside.

I don't want to achieve immortality through my work...I want to achieve it through not dying.

David Shealey
Dandridge, TN
EX: '01 Black LT, BAT BYKE (Totaled at 110,000 miles)
IBA SS, BB, BBG, 10/10ths.
No bike now, but maybe in the future.
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post #6 of 16 Old Aug 31st, 2006, 1:18 am
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Yep. In the US front tires always wear faster on the left.


Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles
'09 Magnesium Beige Metallic K13GT, 63K miles
'03 Anthracite Metallic K12LTC, 66K miles
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#143, IBA# 366, MOA# 111996, SCMA# 24032


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post #7 of 16 Old Aug 31st, 2006, 1:20 am
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Quote:
Originally Posted by dshealey
The shape of the road only contributes a very minor amount to off-side wear
...once again proving that a little knowledge (me) is dangerous! Thanks for the complete explanation!

Ted

Camarillo, CA
2012 Ducati Multistrada 1200S - Red
2007 R1200S - Black - Sold
2003 K1200LTC - Silver - Sold
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post #8 of 16 Old Aug 31st, 2006, 1:55 am Thread Starter
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Quote:
Originally Posted by meese
Yep. In the US front tires always wear faster on the left.
Hells Teeth! thats some tyre wear right there! Mines not as bad as that, I still have tread pattern visable. Maybe we should swap tyres to even up the wear patterns.

Rgds
Mike

"For those that know, no explanation is needed,
For those that don't, no explanation is possible."

2001 K12 LT Toscana Green AKA Baby Sh*t Green
Kawasaki EN500 - been sold on!
Hardtail Chopper ( Honda CB 500 engine) in a box still!
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post #9 of 16 Old Aug 31st, 2006, 2:13 am
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That was after a 550 mile trip south, then 1,200 miles in 24 hours on California's twistiest roads, and then I was heading back north again. I stopped for fuel and realized I wasnt going any further. Luckily, there was a Yamaha dealer 5 miles away, open on a Sunday afternoon, and had the right tire in stock.

I'd changed the rear just before the trip, but thought the front would get me back. Next time, I'm just changing both. Or coming over to ride the UK for a while. I still remember some great Welsh B roads.

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles
'09 Magnesium Beige Metallic K13GT, 63K miles
'03 Anthracite Metallic K12LTC, 66K miles
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#143, IBA# 366, MOA# 111996, SCMA# 24032


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Some people see the gas tank as half empty. Some see it as half full. All I care is that I know where the next tankful is coming from...
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post #10 of 16 Old Aug 31st, 2006, 6:58 am
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Let's go intercontinental.

Greetings all you North American LT owners.

Here's an idea. Howabout all you righthand side of the road guys swap front tyres with us lefthand side of the road guys. Now that should even up the universe or at the very least, our unevenly worn front tyres.

Oh Mr Shealey, I hope you're enjoying your porridge.

Kindest regards to all
Paul Harrington
Australia
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post #11 of 16 Old Aug 31st, 2006, 9:47 am
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Sheesh!

Quote:
Originally Posted by meese
Yep. In the US front tires always wear faster on the left.

Truly amazing! Who would have known about this. That's why this forum RULES!!

(Thank goodness my LT is configured for RHD)

I would rather be riding my bike and thinking about God than sitting in Church thinking about my bike!

Regards
Allen
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post #12 of 16 Old Aug 31st, 2006, 9:50 am
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Quote:
Originally Posted by harrowbmw
Greetings all you North American LT owners.

Here's an idea. Howabout all you righthand side of the road guys swap front tyres with us lefthand side of the road guys. Now that should even up the universe or at the very least, our unevenly worn front tyres.

Oh Mr Shealey, I hope you're enjoying your porridge.

Kindest regards to all
Paul Harrington
Australia
[email protected]
Sharp idea. Too bad shipping cross oceans is so expensive. We could take off tires when half worn and swap with our "other side" brothers and sisters.

Yes, now that you told me what porridge is, I realize I enjoy it. Funny, all those decades reading about "porridge", I never knew it was just oatmeal.

I don't want to achieve immortality through my work...I want to achieve it through not dying.

David Shealey
Dandridge, TN
EX: '01 Black LT, BAT BYKE (Totaled at 110,000 miles)
IBA SS, BB, BBG, 10/10ths.
No bike now, but maybe in the future.
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post #13 of 16 Old Aug 31st, 2006, 12:01 pm Thread Starter
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Quote:
Originally Posted by meese
I still remember some great Welsh B roads.
Ah! the joy of twisties... I live right on the border with Wales, and was in Tenby (west-ish coast) at the weekend. Our planned 100 mile blast on sunday morning was spoilt because the highways agency had just resurfaced a 30 mile section of nices twisties, and with all the loose chippings we were very restricted in our speed.

Rgds
Mike

"For those that know, no explanation is needed,
For those that don't, no explanation is possible."

2001 K12 LT Toscana Green AKA Baby Sh*t Green
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post #14 of 16 Old Aug 31st, 2006, 12:45 pm
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Yep, I know Tenby. Nice castle. I'll most likely be heading back to Newport sometime in early October for a week or so. Still working on where to rent a bike from.

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles
'09 Magnesium Beige Metallic K13GT, 63K miles
'03 Anthracite Metallic K12LTC, 66K miles
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#143, IBA# 366, MOA# 111996, SCMA# 24032


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Some people see the gas tank as half empty. Some see it as half full. All I care is that I know where the next tankful is coming from...
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post #15 of 16 Old Aug 31st, 2006, 5:25 pm Thread Starter
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Quote:
Originally Posted by meese
I'll most likely be heading back to Newport sometime in early October for a week or so. Still working on where to rent a bike from.
You will only be 50 Miles from me in sunny Gloucestershire. Do you need me to do any calling around for a bike? Could buy you a beer one night, often take the bike out for a spin on a wed or thur.

Rgds
Mike

"For those that know, no explanation is needed,
For those that don't, no explanation is possible."

2001 K12 LT Toscana Green AKA Baby Sh*t Green
Kawasaki EN500 - been sold on!
Hardtail Chopper ( Honda CB 500 engine) in a box still!
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post #16 of 16 Old Sep 1st, 2006, 1:39 am
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Thans for the info, Mike. I don't have exact travel dates yet, but when I do I'll be sure and post to the Euro forum. I'd love to meet up for a pint or two.

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles
'09 Magnesium Beige Metallic K13GT, 63K miles
'03 Anthracite Metallic K12LTC, 66K miles
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#143, IBA# 366, MOA# 111996, SCMA# 24032


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Some people see the gas tank as half empty. Some see it as half full. All I care is that I know where the next tankful is coming from...
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