So as for the stretch these are 225/40/18 on 18x8.5 wheels and there is minimal stretch i actually think its perfect. This is continuing from the earlier post where the stretch is a very opinion based kinda look. I personally dont like it id prefer the wider tires for better traction. And as for the tail lights its a purple can called VHT Nite Shades its really easy just pull out the tail lights and clean them and put on a couple coats of the stuff its way cheaper than ordering new ones plus i like the look better anyway.