Undated, but a period ad.
I can see a possible problem with such.
A friend purchased a car fitted with an almost new set of Firestone 30 x 3.5" clincher tyres, but one had valve stem problems. When the tyre was removed, it was found to have had the sidewalls cut almost to the fabric about 3/8" up from the bead. The bead on the tyre had not been seated properly in the rim.
We checked the others. Same story, with one tyre damaged beyond use. The tyres had been fitted with flaps which extended half way up the sidewall. As the tube was aired, the flap did not allow it to push the tyre bead into the sides of the rim. These things would make this problem even more pronounced.
Allan from down under.
Allen
Perhaps the install wasn't sufficient.
Flaps conform, and the important thing is to verify the bead is seated in the clincher rim.
Two things have to be done, initial low pressure in tube to say 15 psi or so, then wham the tire and wheel on the floor, or use a mallet.
Then check the tire bead signal, that little raised bead, it must be close to the rim, and circle it completely, indicating the bead is seated. Then air up to 65 psi.
Flap conforms, won't interfere with casing install
Low up the pressure on the tube. Then beat, strike, hit or drop the wheel and mounted tire from height on the concrete till the bead is seated.
Verify the indicator line is all the way around the rim. Bead seated.
"Then air up to 65 psi."
Or 25, if you're hard headed.
Whated he say??
Dan, you are right about checking the tyres after fitting. My point is if one did not fit un- necessary flaps, it would not have happened.
Allan from down under.
Allan
Thanks, was just pointing out that clincher tires need to be seated well with the bead fully in the rim, prior to airing up the tube to final pressure.
Isn't possible to seat the bead of a clincher with just air pressure, like today's modern tires are forced to the rim's edge.
As for un-necessary flaps, well....I use them religiously...to keep from having un-necessary flats.
Bouncing or rubber mallet will help get em seated, you know how rowdy them tires can be! If they're not seated the show can't start! LOL