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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through November 11, 2010 » Rear tire spin ... What gives? « Previous Next »

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Milleniumx1
Posted on Monday, November 01, 2010 - 12:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Although it might sound it, this thread isn't a "my bike has so much power it shreds rear tires" question. This one's legit, asking for help from those that have probably forgotten more about sportbikes than I know.

How do you NOT wear down the middle of the tires ... Or better yet, how do you prolong their life? Does 32 versus 36 psi matter, suspension tweaks that affect how it hooks, etc? Other than laying off the throttle, what tips are there to extend tire life?

I got 2K miles out of the center rear of my stockers, and I'm approaching that on the Michelin PP 2CT's. These look better, but still wearing faster than seems right. My rear tire spins in 1st, versus bringing the front up. That can't be helping ...

Mike
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Jdugger
Posted on Monday, November 01, 2010 - 12:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

High tire pressures and a very gentle right wrist will lengthen the life of your tires. Wheelies will most definitely burn the center right out of a tire.

If you are turning enough and going fast enough to wear out the sides before the center, tire life will be far, far less. For example, I probably only get 350-500 miles out of a set of tires before I'm at wear indicator on the sides.

I then sell the tire to a squid for $20, and he gets another 500-1000 out of the center.

If you are getting more than about 1000 miles or so out of a rear, you will always wear the center out first because you aren't going through corners very fast.

Cornerspeed is what wears tires out fast, and what will actually use the sides down.

Honestly, getting 2,000 miles out of a sport tire is really something. I'd be happy about it if I were you.
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Xl1200r
Posted on Monday, November 01, 2010 - 12:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you're spinning the rear you're giving it too much gas.

My stock Pirelli's lasted over 5,000 miles and that includes lots of spiritied riding and a track day, as well as some "touring" duty.
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Froggy
Posted on Monday, November 01, 2010 - 01:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Smoothness, speed, and tire pressure are the big factors to tire life and fuel economy. I run about 40psi cold, don't do 1000mph, and am easy with acceleration, braking, and transitioning from one to another. I get about 7000 miles out of a Corsa III, 15000 on a Scorpion Sync, and currently am at 16k and counting on a Diablo Strada. 54MPG is nice too : )
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Carbonbigfoot
Posted on Monday, November 01, 2010 - 01:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I quit downshifting as aggressively, and picked up some tire life.

R
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Crabby
Posted on Monday, November 01, 2010 - 02:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Its all about easy on and off, and keeping the speeds sane. high speed riding = early tire wear.

also, lose some weight.
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Metalrabbit
Posted on Monday, November 01, 2010 - 03:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The spinning in first gear souldn't last very long before you have to shift compared to the time your in the rest of the gears. Plus, What the "H" are you doing? Riding with V-Rod owners?
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Dalton_gang
Posted on Monday, November 01, 2010 - 07:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Something doesn`t sound right.

My R will almost always stand straight up. It rarely will spin the tire unless I`m working it. I'd check your suspension settings.

Forget about getting a lot of miles on the tire unless you do a lot of commuting and ride like a grandma. I average about 2500 miles per rear.
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Dannybuell
Posted on Monday, November 01, 2010 - 07:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I remember reading about a team whose veteran driver was retained to help the rookie learn to learn the tracks of Europe. This day it was Nuremburg. The bottom line was to try and be one gear higher than you think. You will go faster than you think and be taking some torque off of the tires which has to extend their life.

(Message edited by dannybuell on November 01, 2010)
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Xtreme6669
Posted on Monday, November 01, 2010 - 07:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Spinning in first is odd... possibly too much preload on the rear? try to soften the rear up a little and see if it reacts any different?
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Blur
Posted on Monday, November 01, 2010 - 07:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'd check your tire pressure first and then soften the preload on your shock. If you're having a "problem" spinning your rear that should fix it. Everyone else mentioned good fixes for tire wear.
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Petebueller
Posted on Tuesday, November 02, 2010 - 01:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I get 12000 km + out of Dunlop Roadsmarts on my Firebolt, about the same on the front of my 1125R but only about 7,000 km out of the rear.

I've wondered if the muffler is heating the rear tyre on the 1125.
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Boogiman1981
Posted on Tuesday, November 02, 2010 - 02:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Pete i think so and when i chopped mine up until i got the turn out put on it def did i prolly coulda made to 6k if i'd been faster getting the exhaust work done
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Petebueller
Posted on Tuesday, November 02, 2010 - 05:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Be interested to see how you go with the next one Boogiman.

I've had to go back to the stock system because my bike park is under state police HQ.
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Crazyhawk99
Posted on Tuesday, November 02, 2010 - 05:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

}I've had to go back to the stock system because my bike park is under state police HQ.


Pete, that should cut down on your risk of theft considerably. Good trade-off IMO.
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Petebueller
Posted on Tuesday, November 02, 2010 - 05:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Can you trust the cops over there? That'd be nice.

(Message edited by Petebueller on November 02, 2010)
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Crazyhawk99
Posted on Tuesday, November 02, 2010 - 06:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Pete, if you mean the cops in Germany, I would have to say yes, I trust them. I was thinking the close proximity to a police station would deter criminals in your case, but I didn't think the police themselves would be a problem.
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Petebueller
Posted on Tuesday, November 02, 2010 - 06:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I was going to say with tongue in cheek that we park as far away possible from police stations to make it harder for them.

Anyway the truth is that the areas around police stations here are crowded with bikes. And it's not just passive. Some guy went nuts outside the station I park at and knocked a few bikes over. The police picked them up and stuck notes on them for the owners.

If I was parking outside I may not worry about a system, but in the basement right underneath with all the noise the 1125 makes at idle is a bit too in the face. I don't have any problems parking the Firebolt in underneath with a Drummer or a Micron but the 1125 is something else.
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Milleniumx1
Posted on Tuesday, November 02, 2010 - 09:38 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm 165, and have the bike at factory recommendations, minus one notch to soften things up across the board.

Most all of my riding is aggressive in the twisties, but I'm no Rossi ... Far from it. Years of drag racing might explain it!

Mike
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Chameleon
Posted on Tuesday, November 02, 2010 - 12:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I got 5,500 miles out of my stock rear.

I've been running mostly SportTouring tires since and generally get 11,000 miles or so out of a rear. That's with plenty of engine breaking, 1-up & 2-up wheelies, and general hooliganism.

Metzeler Z6-Interact tires FTW!
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Dktechguy112
Posted on Wednesday, November 03, 2010 - 01:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

"Pete, that should cut down on your risk of theft considerably. Good trade-off IMO."

Not necessarily, My old sporty got shot up with a paint ball gun, and it was parked 150 feet from a police station at my college. It was in a parking garage that is attached to the police station.
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Pizzaboy
Posted on Wednesday, November 03, 2010 - 02:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

too much HP. let me borrow your bike for a couple track days.. loosen up the valve springs and wear out the cylinder walls a little bit.
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