The one thing I can't stand after a full detail, are the horrid, dried out fender liners. Over the years, I've tried a few things. And lately, I've tried Adam's Invisible Undercarriage, and Adam's In and Out spray. They both do great, but just for a little bit.

Obviously, I can just buy brand new fender liners and solve this whole problem, but that's going to be pricey. I've thought about possibly spraying them with a semi-gloss paint, or maybe even some undercoat spray?

Any thoughts on this guys? Not sure how well a spray paint would adhere to the plastic though, and possibly how well it would hold up.

 

You may be already doing this, but do you clean the liners first? I remove my wheels and then wash the entire inner fender with a good APC, water and some brushes. I wash any exposed suspension bits before applying a undercarriage spray,etc.

I too use the Adams Undercarriage spray and even have tried the VRT with good results. Whatever you use the initial key is prepping the surface prior.

 

Tire foam spray also works well on fender liners.

 

Cleaning them with a good degreaser and a stiff brush. I dress wheels wells with Chemical Guys Bare Bones.

You can buy a spray-type rubberized undercoating, but the rear wheel wells are the ones with that in them. Not sure how thyat would look on the front ones though.

 

Lower your car, problem solved.

 

It's definitely as low as I'd want it to be. Plus, I'm running 17x9 +45 w/255 tires up front. So that definitely helps in covering some of the liner up.

 

On a more serious note, be very careful with the AMOUNT of dressing you put on the lines. Many people want them sexy black, and spray a shitload of dressing on them. All good right? Wrong. In the rain, the water will mix with the dressing, and drip onto your tires, essentially covering them in a film of oil. Get them as clean as you can with a brush/degreaser/soap, dry, spray on whatever blackness you want, and call it a day. It's a car you drive, keeping the liners clean is a losing battle.

 

I have not found a wheel well dressing that lasts too very long. At the moment I am using Griot's Undercarriage Spray on my wheel wells. It seems to do a good job. But it only really lasts a couple of weeks. Fortunately, our S2000 (front) wheel wells are not that too terribly exposed.

 

I just pulled out the front liners and used a couple cleaners simple green and some Orange cleaner. I was not sure what to get them back to rich black. I've used spray silicone on plastic parts in engine for +5 years. no probs there it looks almost new with 94000 miles.