I'm looking at tires for the rims im ordering. What do the tread wear numbers mean. Like what would a number such as 420 mean vs one of 360 or 300. By the way, i am pretty sure im gettin enkei rs5 in silver and then powdercoating them later to possibly bronze with a chrome lip cuz i want my car white or black

 

higher the number, longer the tire life, normally atleast.different companiescan rate differentlybut generally itsabout the same.

example of the ratings:

Falken Azenis RT-615's have a treadwear rating of 200. theira maxperformance tire which means its soft rubber and will wear pretty fast.

Falken Ziex 512's have a treadwear rating of 420. just a high-performance all season so the rubber isnt too soft and will last longer.

 

You can compare ratings of the same manufacturer, but all bets are off if comparing one manufacturer's ratings to a different manufacture's rating. For example, Dunlop's 280 may be the same as Goodyear's 240.
As a general rule, the higher the number, the longer the treadlife, but the worse the handling.

Also, be careful when having aluminum powder-coated. Some alloys, like 7000-series will be severely weakened by the high temperatures required for powder coating. Call the wheel manufacturer, if possible, and ask how high a temp their wheels can be subjected to. Then ask your epoxy powder coating place high high they need to heat the wheels.