Does anybody have a good pic showing the Pirelli Sport Demon 140/70's on a GS?

These are 130's.  I think Snapper (?) has pics of her 140's.

 
 

Hmm...looks sweet. I heard they don't last as well as Bridgestones or Michelins. Do you use it more on the track or street?

Personally, I'm looking for a tire that'll last longer than my  Bridgestone Exedra G550.  It was brand-new on the bike when I bought it, and its only been 2800 miles and the center tread is near nothing       There's no way I'm gonna pass inspection this spring without a new rear tire.

I did alot of highway riding, and I've ridden quite a bit in the cold (will cold roads/tires wear tires faster?) but now that I have the YZF for the open road, the GS is gonna get mostly around-town duties.  Naturally, I'd like a tire that looks good, but more than anything I just want a tire that will last.

I know there's already like a gojillion 'best-tire' threads to read on the board, but if anybody's got a suggestion, I'm all ears.

Quote from: kyzeeI heard they don't last as well as Bridgestones or Michelins. Do you use it more on the track or street?

Well I've put about 3500 mi on them - all street.  This is the first set of tires I've bought for the bike so I have nothing compare to, but they seem to be wearing fine.  

I just took a look and made a rough measurement:  I've got at least 6/32" on the center of the rear.  I'm guessing it was about 8/32" new and assume the wear bar is at 2/32".  So I've used no more than 1/3 of the tire life.  Should be good for at least 10k-12k mi... but that's just a guess.

Don't be fooled into going just for longevity.  Get the tires that will give you grip in the most extreme situation you are likely to face, so they willl always be as safe as possible (not to mention more fun).  Having said that, I had Michelin Macadam 100 front/90 rear on mine and got 10,000km out of the rear and 20,000km out of the front.  I don't race the bike but I don't just puddle along either.  In all that time they never even felt like getting untidy, even in the wet.  Currently I have a Michelin Pilot Road on the front and it feels even better.  The rep said it should last as well as the Mac100 but grip better.  I guess time will tell.  Good luck.
BTW, the Excedras are truly awful tires, so don't use them as a comparison for anything else.  I wore mine out (they were fitted as OE on the new bike) in about 8,000km and they always felt skittish, even in the dry.

vt... if i'm not to lame to remember tonite I'll snap some of mine in the garage.

jake

are these 140/70 radials or bias ply's?

Quote from: pantabloare these 140/70 radials or bias ply's?

The Sport demons are bias ply.

What's the diff between bias ply and radial??

Quote from: pizzleboyWhat's the diff between bias ply and radial??

Let me count the ways...!  Radials have the belts of material that make up the body of the tire running er.. radially, that is straight around from one side of the tire to the other.  Bias tires have said belts crossing each other in layers at different angles.  Practically, what this means is radials can usually be lighter for the same strength, so run cooler, take less HP to turn, and give less unsprung weight (meaning less strain on the suspension).  There is less movement between the layers so the tire squirms less, making it more stable, providing better support for the tread and so giving better wear.  This also allows softer compounds that grip better to still give good mileage.  I'm not convinced that radials cost more to make but they perform so much better that most people are prepared to pay more for them.  Over time, the increased purchase cost evens out with better mileage so if you have the choice, I believe radials are the preferred option.  Hope this helps.

I do have pics of my 140s.. let me know if you want to see em.  These tires are great.  Course my last set were hard as rocks so I am comparing these ones to them!  

Quote from: snapperI do have pics of my 140s.. let me know if you want to see em.

yeah dude... post em up!!!  I'd like to see a comparison to the 130's.

thanks  

QuotePractically, what this means is radials can usually be lighter for the same strength, so run cooler, take less HP to turn, and give less unsprung weight (meaning less strain on the suspension).

The lighter tire also allows for faster suspension response which is another plus the standard size tire has over a wider rear. If you want looks, get the wider tire, if you actually want to squeeze the most street performance you can out of the bike stay with the stock sizes. They deal with bumps better which is important if suddenly your favorite curve developed a new pothole you didn't see. Also it won't change your gear ratio and hurt your 1st gear take-offs.

Now if you're on the track the suspension response is much less important because you've got a nice groomed surface and it doesn't come up much. Things like total grip become more critical and moving to the larger tire MAY help depending on what other suspension and gearing modifications have been made.

When I had a 120/70/17 front and a 150/70/17 rear with stock gears I had to slip the clutch like a mo-fo to start out and the bike got really unstable in a deep lean. Not fun. When I changed to a 15 tooth front sprocked and stock tires I could suddenly accelerate again. In fact I can accelerate so hard on the low end I have to be careful pulling out of slow turns that I don't lift the nose or kick out the rear. Something I never could even attempt before since I both couldn't get into a hard turn safely and had no torque once I was there.

YMMV and all that rot.

Here are two different views of my 140 rear pirelli SD.

http://home.comcast.net/~dewarke/rear_pirelli.png

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wow... that rear tire looks nice  

is that a 70 or 80?  will either fit, and if so how will the different radius affect performance (I have a stock bike).

I have the Metzler ME330 front and ME550 rear but I can't say that I'm happy with them.  I have ridden a couple hundred miles on them but they still feel squirmy when I lean the bike over.  Have I just not scrubbed them in yet or what?  I thought they should grip better than the stock tires but it feels like they are slipping.  

Any body else running Metzler?

Rob

stock is 70 right?  So its an 80.   :mrgreen:

stock is 70 right?  So its an 80.   :mrgreen:

so snapper, did you notice any difference in performance with the 80's?  I assume that a 140/70 sport demon will fit nicely on the bike, too.  I'm not particularly concerned with the profile of the tire, but if one or the other may help with performance (acceleration/suspension), I'll take what I can get with the GS.  I would assume that a higher profile will give you a slight decrease in torque at the rear-wheel, but a slightly higher top-speed?  I assume that the speedo reads from the front axel, so it shouldn't affect indicated vs actual speed.

oh yeah, and I haven't the experience or the tools to remove my rear wheel (i think).  my local guy quoted me 35 bucks to do the rear-tire start-to-finish for me.  is that about the going rate?

peace

p.s.  wow, I used the word "assume" three times in that post... first sign indicator that I have NO IDEA what I'm talking about  :lol: