What sort of an ISSUE would be on your list to be resolved by fitting “sealant “ please?
Presumably the slow issue of gas from leaky beads which were not wiped with tyre lube when the tyres were fitted ? I thought most tyre fitters always used it, if only to make shoving the tyre over the rim easier ?
Sadly in the past i've seen cowboy fitters fit tyres bone dry, they wouldn't do it when manually fitting because effort reqd but the machine effortlessly rips the bead to shreds, you can only wonder at the complete lack of common sense they don't stop at the first signs of noise protest from the tyre either, i do a better job using tyre levers and a mallet on the ground.
The other issue of dry fitting is when inflating and the bead pops on, they can sometimes be not seated correctly, the bead having gone in too far as it were one side and being dry 180' over its only just pinched in, this wobbly tyre won't resolve or reseat itself during driving either but they'll balance it up anyway seemingly oblivious to the run-out.
Don't get me started on the clown i once watched overseeing on-the-car balancing, instead of the machine spinning up the wheel/tyre via the edge of the tyre tread he had the spinner against the sidewall which promptly dug a trench around the entire circumference sc***ping a brand new tyre.
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