Stop being a berk and get some better rubber.
Ok, i'll spell it out, when i was skint i bought retreads, they are crap, they are dangerous.
If they're dangerous why would trucks use them?
[TW]Fox;20441687 said:Because truck tyres are completely different to car tyres.
Trucks also blow tyres all the time - but as you've found yourself it isn't an issue as the rear axles, including trailer axles, are double tyred each side so if a tyre blows out, there is no loss of control. Often the driver wont even notice.
This is why the motorway network is literred with so many tyre carcasses - they are from trucks.
Years & years ago i had a retread blow out on the rear while going around a corner ............Are retreads really more likely to blow out? car ones that is.
you are super gluing tread to a worn out tyre and asking where the issue is?
seriously unless you will never ever exceed 30mph don't remotely consider this as an option
berate the motors crew as much as you like but don't discount all of the people telling you to run a mile from re-treads