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Why would fitting stock 14's lower it, you need to keep your rolling radius so when running 14's you keep to the original profile fitted 185R14, on the front you can fit 14's that are equivalent or larger than your current 15's??If the banging is coming from your rear dampers it sounds like they are bottoming out so too long for the height you are running at, easy fix to put shorter dampers on, are you sure its not your spring plates hitting the stops?Happy to have a look at it for you but a reasonable drive away, this is the bread and butter stuff in the workshop
Why would fitting stock 14's lower it, you need to keep your rolling radius so when running 14's you keep to the original profile fitted 185R14, on the front you can fit 14's that are equivalent or larger than your current 15's??
If the banging is coming from your rear dampers it sounds like they are bottoming out so too long for the height you are running at, easy fix to put shorter dampers on, are you sure its not your spring plates hitting the stops?
Happy to have a look at it for you but a reasonable drive away, this is the bread and butter stuff in the workshop