Tire casing wore hole in tube

FWYT
Posts
3310
Joined
5/25/2014
Location
San Diego, CA US
Edited Date/Time 7/28/2015 4:44pm
This was a first for me. Got a flat and upon inspection, it appears the casing of the tire wore a hole (shown) in the tube.Those marks you see are all around both sides of the tube and perfectly jive with the casing belts that I feel on the inside of the tire.

Tube has about six hours on it. Tire, Pirelli Scorpion MXMH 554 (made in Brazil), has about three hours. I run 13lbs. and an assload of baby powder.

Showed my brother and he recognized the marks immediately. He's had that happen a few times over the years with other brands as well. Guess I was the last to know! hahaha

Has anyone else had this happen? Do I have a right to be a little pissed? I mean, that tire purchase was basically a waste, ya know? Do you feel the inside of the tires before you purchase them?

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Paw Paw 271
Posts
3640
Joined
4/3/2013
Location
Benton, LA US
7/28/2015 6:00am Edited Date/Time 7/28/2015 6:00am
I have seen this in the past. It was due to two things.
1. Very low tire pressure.
2. Tire slipping on rim.

A bad or loose rim lock can also allow the tire to move on the rim.

Paw Paw
rallendude
Posts
2200
Joined
8/17/2006
Location
Adger, AL US
7/28/2015 9:11am
Baby powder is your friend. Make sure when you put the new tube in it's all clean and dry. Apply a light coat of baby powder inside the tire and rub some on the tube.
mxtech1
Posts
1958
Joined
7/21/2011
Location
Galesburg, IL US
7/28/2015 1:51pm
For serious racers, I always used to feel the inside of the tire for manufacturing "defects" like this. There were several times I took a razor blade and scraped the inner casing to provide a smooth surface.

It's cheap insurance when you're at a national or a serious race.

Nowadays, mousse inserts do not suffer from those conditions.
moore433
Posts
525
Joined
11/2/2011
Location
Denton, TX US
7/28/2015 4:44pm Edited Date/Time 7/28/2015 4:45pm
I have seen this in the past. It was due to two things. 1. Very low tire pressure. 2. Tire slipping on rim. A bad or...
I have seen this in the past. It was due to two things.
1. Very low tire pressure.
2. Tire slipping on rim.

A bad or loose rim lock can also allow the tire to move on the rim.

Paw Paw
I know paw paw has seen this in the past. When I first got my first cr 250 in 1985 (a used bike in early 86) every time I made a lap the rear tear would go flat. We tried everything we could think of and finally put a new rear tire on and it stopped . The tire that was on there wasn't very old and the tread was still great that's why we tried other things first, but it definitely had a spot in it that would pop the tube every time you rode on it....

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