Pirelli Problem

Mega Racing
Edited Date/Time 11/11/2020 9:45am
Has anyone else had problems with the Pirelli Scorpion Soft splitting at the side nobbies?

For deep sand i think these are by far the best sand tyre you can get. They are so much taller than the competition.

However the last two i have had have split after low hours. The first one i got a flat & rode for 2 laps so that one was on me. This one has about 7 hours use & as its on my practice bike i would like to get a lot more out of it.



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Motofinne
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Motofinne 11/8/2020 9:04am
11/8/2020 9:04am
How old is the tyre, and what surface did you ride on?
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Mega Racing 11/8/2020 9:15am
11/8/2020 9:15am
They tyre is stamped that it was manufactured in 2019 maybe june. Im sure iv had it for about 4 months now but i have a spare rim with an intermediate tyre that i use for non sand surfaces. So this one has only ever been used on fairly deep sand.
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Jbulz
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Jbulz 11/8/2020 9:31am
11/8/2020 9:31am
I don't have experience with that exact tire, but in my experience that means the sidewalk is flexing too much from low air pressure. The carcass flexes and strains the tire at the base of the tread block
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TeamGreen
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TeamGreen 11/8/2020 9:43am
11/8/2020 9:43am
I'd contact Pirelli and see what they have to say. I'm pretty sure that tire is suppose to run at "1 bar"/14.5 PSI.
Mega Racing 11/8/2020 11:41am
11/8/2020 11:41am
Jbulz wrote:
I don't have experience with that exact tire, but in my experience that means the sidewalk is flexing too much from low air pressure. The carcass...
I don't have experience with that exact tire, but in my experience that means the sidewalk is flexing too much from low air pressure. The carcass flexes and strains the tire at the base of the tread block
Thats a very good point. I just went & checked & its at 11psi. So it must have been flexing too much. Im sort of old school with my tyre pressures. 🤦🏻‍♂️ I usually just give it a wee push with my thumbs & if it seems a little soft i will put it to exact pressure. 11 in that tyre still feels firm tho, but obviously its not enough. Every days a school day and all that
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chump6784
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chump6784 11/8/2020 11:53am
11/8/2020 11:53am
I had the same happen but only on the fronts as I never used the soft on the rear. I was running around 13.5 in mine and some of the tracks were fairly hard packed. I've since switched to the Maxxis ST and haven't had the same problem and I prefer them to the Pirelli
Thisusernameisavailable 11/8/2020 11:54am
11/8/2020 11:54am
Its not to do with pressure- Ive been out at Dunkirk when Geboers Suzuki was there testing and their rear tyres were literally FLAT!

Id say you've used it on a surface which isn't soft enough- maybe it had a soft 3-6 inches of sand, but below that, a hard base (Think, Mildenhall, or Wildtracks)

Even just 1 or 2 corners on the track where its dug down to a hard base, flexing the nobbles to the point of tearing off.

The Pirelli MS32 did this exact same thing if used on anything other than wet mud or loam.
Mega Racing 11/8/2020 12:15pm
11/8/2020 12:15pm
Thisusernameisavailable wrote:
Its not to do with pressure- Ive been out at Dunkirk when Geboers Suzuki was there testing and their rear tyres were literally FLAT! Id say...
Its not to do with pressure- Ive been out at Dunkirk when Geboers Suzuki was there testing and their rear tyres were literally FLAT!

Id say you've used it on a surface which isn't soft enough- maybe it had a soft 3-6 inches of sand, but below that, a hard base (Think, Mildenhall, or Wildtracks)

Even just 1 or 2 corners on the track where its dug down to a hard base, flexing the nobbles to the point of tearing off.

The Pirelli MS32 did this exact same thing if used on anything other than wet mud or loam.
Good point that. Its only ripping the nobs on one side so must have been a hard base or a rock in one of the ruts in a left hand turn.
DannyST107 11/8/2020 12:49pm
11/8/2020 12:49pm
Scorpion mx soft, 8 hours of sand track riding without concrete jumps. Has been contacted with pirelli but haven’t heard anything for 2 months now.

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aees
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aees 11/8/2020 1:42pm
11/8/2020 1:42pm
Something has happened with their compound. Im getting 4h out of tire i used to get 10h+ on. Mainly front tires like mx32 and mx extra.
Mega Racing 11/8/2020 2:29pm
11/8/2020 2:29pm
I dont mind losing a nobby or 2 but when it splits like that the integrity of the tyre is gone & its wrecked.
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LKHill
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LKHill 11/8/2020 2:50pm
11/8/2020 2:50pm Edited Date/Time 11/8/2020 2:50pm
Every Pirelli I have even owned has cracked out on me before the tread was beat.
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Jack_4196
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Jack_4196 11/8/2020 6:27pm
11/8/2020 6:27pm
I had 3 rides on a mid-soft and lost 2 knobs running spec PSI, it’s a shame because it’s a great tire...
Mr. Info
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Mr. Info 11/8/2020 8:12pm
11/8/2020 8:12pm
It is an air pressure issue. The Geboers Suzuki I bet is using moose inserts. There are the same issues with the Dunlop’s fronts from low air pressure.
mwssquad827
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mwssquad827 11/8/2020 8:28pm
11/8/2020 8:28pm
The xtra x intermediate tires do the same thing... WPS gave me a replacement set.. but the replacement did the same thing... they used to be very long lasting tires.. after the 2sets I have bought them again..

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Camp332
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Camp332 11/9/2020 5:08am
11/9/2020 5:08am Edited Date/Time 11/9/2020 8:30am
Way back when I had a discount deal from Pirelli, this happened to me a few times. Pirelli was cool when I shared pics, and they replaced the tires I had issues with.
mx317
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mx317 11/9/2020 5:17am
11/9/2020 5:17am
I've had good luck out of my newer MX32 mid-soft tires, but I only run them on prepped MX tracks. I had some old ones break off knobs on the front tire after several hours. The newer ones have a different compound that is better than the older ones.
dl117
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dl117 11/9/2020 9:53am
11/9/2020 9:53am
mine looks so close to that, I thought you were taking pics of the old kawi......I did ride a harder base track a couple of days and that is what did mine in.
7eleven
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7eleven 11/9/2020 12:51pm
11/9/2020 12:51pm
One issue over the years has been how the distributors store them. If they are put in freezing conditions, the tires can be chemically upset, which leads to knobs breaking and cracking.

And to the genius who said tire pressure doesn't matter.... C'mon man, are you serious? These tires are designed to flex a certain way, at specific pressures, anything else is a compromise to tire integrity.
Snapper
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Snapper 11/10/2020 2:52am
11/10/2020 2:52am
Thisusernameisavailable wrote:
Its not to do with pressure- Ive been out at Dunkirk when Geboers Suzuki was there testing and their rear tyres were literally FLAT! Id say...
Its not to do with pressure- Ive been out at Dunkirk when Geboers Suzuki was there testing and their rear tyres were literally FLAT!

Id say you've used it on a surface which isn't soft enough- maybe it had a soft 3-6 inches of sand, but below that, a hard base (Think, Mildenhall, or Wildtracks)

Even just 1 or 2 corners on the track where its dug down to a hard base, flexing the nobbles to the point of tearing off.

The Pirelli MS32 did this exact same thing if used on anything other than wet mud or loam.
Spot on, in my experience, if you use a Pirelli on anything other that the surface it's intended for it'll split side knobs.

I can't think of any track in the UK that warrants a paddle tyre really, unless somewhere that's next to a beach like Tain.
LKHill
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LKHill 11/11/2020 9:18am
11/11/2020 9:18am
Thisusernameisavailable wrote:
Its not to do with pressure- Ive been out at Dunkirk when Geboers Suzuki was there testing and their rear tyres were literally FLAT! Id say...
Its not to do with pressure- Ive been out at Dunkirk when Geboers Suzuki was there testing and their rear tyres were literally FLAT!

Id say you've used it on a surface which isn't soft enough- maybe it had a soft 3-6 inches of sand, but below that, a hard base (Think, Mildenhall, or Wildtracks)

Even just 1 or 2 corners on the track where its dug down to a hard base, flexing the nobbles to the point of tearing off.

The Pirelli MS32 did this exact same thing if used on anything other than wet mud or loam.
Snapper wrote:
Spot on, in my experience, if you use a Pirelli on anything other that the surface it's intended for it'll split side knobs. I can't think...
Spot on, in my experience, if you use a Pirelli on anything other that the surface it's intended for it'll split side knobs.

I can't think of any track in the UK that warrants a paddle tyre really, unless somewhere that's next to a beach like Tain.
It is a shame they cannot prevent this. I favor the way they work but this issue makes me balk at buying them. It's not an issue if you change the tire even 2 rides. They do race what they sell, lol.
Mega Racing 11/11/2020 9:42am
11/11/2020 9:42am
Thisusernameisavailable wrote:
Its not to do with pressure- Ive been out at Dunkirk when Geboers Suzuki was there testing and their rear tyres were literally FLAT! Id say...
Its not to do with pressure- Ive been out at Dunkirk when Geboers Suzuki was there testing and their rear tyres were literally FLAT!

Id say you've used it on a surface which isn't soft enough- maybe it had a soft 3-6 inches of sand, but below that, a hard base (Think, Mildenhall, or Wildtracks)

Even just 1 or 2 corners on the track where its dug down to a hard base, flexing the nobbles to the point of tearing off.

The Pirelli MS32 did this exact same thing if used on anything other than wet mud or loam.
Snapper wrote:
Spot on, in my experience, if you use a Pirelli on anything other that the surface it's intended for it'll split side knobs. I can't think...
Spot on, in my experience, if you use a Pirelli on anything other that the surface it's intended for it'll split side knobs.

I can't think of any track in the UK that warrants a paddle tyre really, unless somewhere that's next to a beach like Tain.
Desertmartin our top track is definitely worthy of a paddle tyre. Then my main practice track Magilligan is right beside the beach & is bottomless sand.


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Mega Racing 11/11/2020 9:45am
11/11/2020 9:45am
TheGetFresh wrote:
Just curious, were you riding in cold temps?
Not that cold. It was about 8 Degrees C & my Garage i store my bikes in is insulated. Im waiting on a reply from pirelli to see what they say.

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