April 17th, 2017, 05:20 PM | #1 |
ninjette.org newbie
Name: damar
Location: San Jose
Join Date: Apr 2017 Motorcycle(s): Ninja 300 Posts: 3
|
2 slow speed crashes after changing tires
I got my ninja 300 back in february, it came with pirelli diablo rosso 2 tires, which I quickly wore down, racking up about 3k miles in the first 2 months. I recently put the stock rear tire back on (IRC roadwinner), and have had 2 slow speed crashes in wet conditions when my rear tire slipped out when cornering.
The first crash I acknowledge I was coming in too fast on a sharp right turn, (turning into my apartment complex no less) and used the rear brake when I shouldn't have, this compounded by the wet conditions led to a bad time. The second crash (today) is what really has thrown me for a loop. I was doing about 25-30, and there was a sharp left corner, as I began to take the turn, and just as began to lean, my rear tire slipped out and I high-sided. I am fine other than bruised knees, but I am trying to evaluate what went wrong on the second crash. Other than going slower in the future, I feel that my tires have really poor traction. Does anyone have any similar experiences with the stock tires? |
|
April 17th, 2017, 05:31 PM | #2 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
|
Wet weather traction on public roads is extremely variable. Vehicles leak oil and sometimes diesel fuel and gasoline. All you need is a slightly oily spot and traction goes from OK to ice-like. It's certainly possible, or maybe likely that the stock tire's wet performance is not as good as the Pirelli you're used to, and I'm a fan of using high quality, high traction tires, but pushing curves on public roads in wet weather is asking for crashes, no matter what tires you're running.
|
|
April 17th, 2017, 05:49 PM | #3 |
ninjette.org newbie
Name: damar
Location: San Jose
Join Date: Apr 2017 Motorcycle(s): Ninja 300 Posts: 3
|
|
|
April 17th, 2017, 06:05 PM | #4 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
|
Zooming in, I can see several questionable areas, including some obvious oil drips. Typical public road.
|
|
April 17th, 2017, 07:31 PM | #5 |
ninjette.org guru
Name: al
Location: NorCal
Join Date: Aug 2012 Motorcycle(s): ex300, gave up looking for a 250 Posts: 435
|
Are the IRCs new? Are giving throttle while tipping in?
I've felt the rear IRC slide when still cold. They're not very good. |
|
April 17th, 2017, 11:20 PM | #6 |
ninjette.org newbie
Name: damar
Location: San Jose
Join Date: Apr 2017 Motorcycle(s): Ninja 300 Posts: 3
|
They are from 2014, they were taken off by the previous owner shortly after purchase and replaced with the rosso tires I had until recently. How does one go about warming up a tire?
|
|
April 18th, 2017, 05:54 AM | #7 |
Cat herder
Name: Gort
Location: A secret lair which, being secret, has an undisclosed location
Join Date: May 2009 Motorcycle(s): Aprilia RS660 Posts: A lot.
Blog Entries: 6
MOTM - Jul '18, Nov '16, Aug '14, May '13
|
Ride at moderate pace for a few miles before hammering it. Basically it means just don't hit it hard right out of the gate. You don't need to do anything special.
IRCs are notorious for low grip. Typical of OEM tires... they aim for long life, not performance. Weaving does not warm tires... acceleration and braking (i.e. getting the carcass to flex) do. http://www.sportrider.com/how-to-pro...arm-your-tires
__________________________________________________
I am NOT an adrenaline junkie, I'm a skill junkie. - csmith12 Nam et ipsa scientia potestas est. Heri historia. Cras mysterium. Hodie donum est. Carpe diem. |
|
April 18th, 2017, 06:27 AM | #8 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
|
It's pretty hard to have warm tires in wet conditions.
|
|
April 18th, 2017, 06:41 AM | #9 |
Rev Limiter
Name: Jay
Location: WI
Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot.
MOTM - Jun '18, Oct '16
|
As others have noted, the 3 year old IRC probably isn't that great at this point. It was probably "adequate" when brand new, but surely hasn't improved over time.
A significant mis-match between the superior traction of the front Diablo Rosso and the inferior traction of the rear Roadwinner isn't going to help the situation either. It doesn't take much oil or coolant on the road to make a slick spot when it's wet, and you aren't going to see anything. If the Rosso is getting old or worn, it may be a good time to spring for a new set of fresh sport tires. A lot cheaper than replacing bodywork and gear. Do some research on the best tire for your type of riding. There are plenty of good options out there, but know that some of the close-out tires may be older than you would like - so be careful of a great deal. |
|
May 1st, 2017, 06:17 PM | #10 |
ninjette.org member
Name: Nick
Location: USA
Join Date: Apr 2016 Motorcycle(s): 2009 Ninja 250r Posts: 109
|
I ride like a baby when it's wet outside. I locked up my rear tire once in the rain, when some jackass slammed on his brakes coz he decided he needed to turn right NOW.
Other than that, the sport demons have been pretty good in the rain. I just don't push them tho. |
|
May 1st, 2017, 09:58 PM | #11 |
n00bie to wannabie
Name: Bill
Location: St Ives, BC (Shuswap Lake)
Join Date: Sep 2015 Motorcycle(s): 2012 250R (Red), 2005 VFR800A (Red), CRF450X (Red), 2012 F800GS (Wants to be Red!) Posts: A lot.
MOTM - Nov '15
|
My nickel says you're still applying the rear brake with too much force.
__________________________________________________
The Smart Money: #1 - ATGATT, #2 - Training (machine skills and survival skills), #3 - The bike; whatever floats yer boat with the money you have left over |
|
May 2nd, 2017, 08:42 AM | #12 |
ninjette.org guru
Name: Al
Location: Orange County, CA
Join Date: Dec 2015 Motorcycle(s): Thruxton R, R6 450 triple, EX300 (sold) Posts: 263
|
Are you using the rear brake? The IRCs are not "great", but they are solid tires and should be enough for street speeds. At the end of the day, you can override any tire by asking too much of them. You have 100% of available traction before you start taking away percentage points by adding lean angle. If you're using the rear brake while turning, it's possible to overtax the tire while adding lean angle. Lean angle takes away available braking. To be honest, I never use the rear brake unless I have an off-track excursion into the dirt/grass at the track.
You may have simply hit an oil patch or something. Those patches can be super slick with a first rain. I've tucked the front with close to no warning before when hitting a slick patch. It sucks, but it happens. |
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
DIY- Changing Tires on the 250R | kkim | 2008 - 2012 Ninja 250R Tech Talk | 196 | September 29th, 2022 06:59 PM |
Slow speed balance | cadd | Riding Skills | 5 | May 28th, 2016 07:18 PM |
[superbikeplanet.com] - Qatar MotoGP Quote Machine Friday ... Defective tires slow As | Ninjette Newsbot | Motorcycling News | 0 | March 18th, 2016 05:20 PM |
Tires changing colors | Sirref | General Motorcycling Discussion | 42 | June 21st, 2014 09:16 AM |
changing tires | oompa | 2008 - 2012 Ninja 250R Tech Talk | 8 | April 21st, 2014 02:02 PM |
|
|