Screw in back tyre - repair or not?

[midden]

I still dont get why you shouldnt use it on a front tyre though. Saying its not safe to use on the front would kind of put me using it on the back as well.

Front wheel steering increases wobble much easier to lose control of bike than rear wheel wobble.  So any repair lessens the strength of tyre and manufacturers probably not willing to take responsibility. plus good money maker