I think I'm the only member who recommended the Pirellis, and that was based on rider reports on another site, not my own experience
Youzguyz report has me wondering now if I should not recomend these tires, since I've not used them myself
I have the stock IRC on the front, and it's garbage
Any member on here that did the Sisters or Dragon 1 this year can tell you I am NOT a fast rider in the twisties, at least on this bike
While Verslagen rode my bike after I wrecked on the sisters and proclaimed it good, (thanks again Versy!) I feel a wobble from the front tire every time I get it leaned over a fair bit (I do not scrape pegs, or even come close to it) and I'm sure it did so before the crash, too On the rear I have the Shinko 712, a much better tire IMO
some members have reported this tire doesn't stick well in the wet, but I haven't had issues with that so far (although I slow down a LOT IN THE WET)

Sold the bike, so...  I can't check, but I didn't see a 100/90 listed...
So I assumed...
The bike did have a stock fender,... it was Gerry Hughes bike...

I was able to get the 140/90-15 Dunlop D404 tire and wheel mounted on the bike today and go for a little ride before the rain started.  I did notice some difference from the 140/80-15 stock IRC tire....but on a short 50 degree ride I couldn't learn a lot.  With the stock tire the speedometer matched the GPS speed exactly....now the speedo shows 60mph and the GPS shows 63.  The saddlebag brackets have some standard bolts on them in place of the original ones that had a high hex and a round area under the hex....and the tire did not rub on my 10 mile lap around the neighborhood.  I did notice the bike felt a bit taller in the back, and I was sliding forward in the seat a bit more.  The handling is must a bit slower - but nothing to worry about and MMRanch has a 140/90-15 Michelin Commander and goes like the wind.....so you just put a little bit more effort in the steering and it will corner just as quickly as before.  I didn't do any full throttle riding....I am sure it slowed the bike down a tad...the stock IRC 140/80-15 tire and wheel weighed 25.6 pounds, the Dunlop 140/90-15 tire and wheel weighed 31.0 pounds, and I was surprised when I weighed the Pirelli Sport Demon 110/80-18 from my Cafe bike....with an aluminum rim and it weighed 26.2 pounds.  I guess the larger diameter requires more weight even though is is much narrower.

Bottom line for me.....the 140/90-15 works fine.  If you ride a lot of highway, it will be a suitable size....maybe not better for you if you mostly ride country back roads and like to quickly carve the curves

Art Webb wrote on 11/20/15 at 10:50:32:


I'm running the Pirellis front and rear and have no complaints. They are much better than the stock IRCs (which were garbage to begin with). I don't ride in the wet if I can help it so I can't judge these tires in that department. On dry pavement they've never let me down (literally!  ) I decided to go with the 140/90 in the rear. I HIGHLY recommend doing so!


Dave wrote on 11/21/15 at 12:13:44:


I ride mostly country back roads. The 140/90 is a great tire there too. It probably doesn't handle as well as a shorter sidewall 140/80 but I think the difference, for me, is negligible. I checked the speedometer against a bicycle computer with the 140/80 and the 140/90, and the 140/90 seems to be dead accurate. Obviously there are manufacturer differences in tire size. I think I read somewhere a million years ago that manufacturers are allowed by law to deviate up to 7% of listed dimensions.  

140/90-15 should be 24.92" tall. If what I said above is true then it could potentially range from 24.22"-25.6". I'm sure better brands have tighter QC and build their products accordingly.

Here is a link to a tire discussion by Bike Bandit.  it supports a lot of the opinions we have about the narrow/wider tire choices, as well as mounting a tire that is not all that "fresh".  (Funny thing is that Bike Bandit doesn't store tires - they send an order to a tire wholesaler and it is shipped directly to you.....and they sent me a 3 year old tire when I ordered one for the ST1100 - which I sent back and they sent me a fresher one that was only 4 months old).

http://www.bikebandit.com/blog/post/the-7-toughest-motorcycle-tire-faqs?roi=e...

when I traded in my S40, the dealer mentioned that they would have to replace the front tire to pass inspection (yup, it was time for that) so I'm gonna blame my crash on the Sisters on that  
btw, smaller wheels also make for a bike that transitions sort of abruptly, I tried my new favorite twisty bit today and the scootanic dropped into the curves almost too easily

Hey Kris, what is this? Are you trying to make me look bad? Youzguyz said it's a bad tire, so it's a bad tire. Let's just leave it at that. Geeez!

Kris01 wrote on 01/15/16 at 21:33:19:



I think it was wake turbulence or prop wash from Oldfeller!