I fully intended to find the best wheel arch trim reconditioning product this spring. After I ran my first trim test, I found that all products were washed away with just a day or two of rain. I don’t think you should have to detail your trim every week so I’ve been looking for a product that lasts, even through a few days of rain or a car wash.
After the first test did not find any qualifying products, I researched in many forums and found a few more recommendations. The second round added Poorboy’s Trim Restorer, Mothers Back to Blackk, and Black Again to the products with a slight edge in the first test, Zaino Z16 and Sonus Tire & Bumper Dressing Gel.

But again, all the products were almost completely gone after a week and a day of rain. In fact, the Poorboys turned even whiter:

We haven’t had much rain lately, and combined with my lack of time with moving to my new house I haven’t been able to start a third comparison test until finally yesterday. This time, I waited till I found a product that did seem to work on its own, and am now testing it along with others in a proper comparison.

Stay tuned for the results in a few weeks–if we get some rain!