In Victoria, all aftermarket tint must have the same tint factor on each window that it is applied to. Some tinters will tell you that you can have the rear a darker tint, this is not so.
Comment on radio reception, 2nd that.
Any tinting will make it harder to see out of, especially in low lighting conditions. Many fleets only apply the clear uv tint due to OHS, so don't let anyone tell you that tinting does not affect vision. Having said that, I have darkest tint legal, and have had no issues. One just needs to be more careful in low light conditions.

