have a 10 C2S carrara white. i care for it regularly. washing regularly, wax and polish every 3 months and clay every other waxing. use griots best of show, polish 3, and clay. also use orbital polisher. i removed the stone guard recently and was shocked that the paint underneath the guard wax so much whiter than the surrounding. what happened and how do we remedy. i want the car as white as new...

 

Can you attach some photos? My 2006 987S is Carrara White and still looks stunning. I detect no "yellowing". Now, the stone guards themselves have yellowed a little (known and common).

 

dont know how to call you friend, but the car looks stunning. White is really a beautiful color. i always thought that i maintained my paint perfectly. people at the dealer still compliment saying it still looks new. Yes the yellowing of the stoneguards is perfectly normal. i replaced mine because the yellowing bugged me and i have dirt stuck on the edges. when i removed the stoneguard i was amazed how noticeably whiter the portion where the stoneguards where form the surrounding areas without the stoneguard protection. its as if the stoneguards gave uv protection that prevented the paint from changing hues. i am now thinking if the best of show wax from griots imparts a color to the white as it is brown in color....

 

I've heard that this can occur with lighter color paints. Supposedly the UV doesn't pass through the stone guards and the net result is that the paint underneath doesn't change color like the the exposed areas. . I've also heard that keeping the stone guards off will help the previously covered areas to match the rest of the paint. I can't verify this but it was one of the downsides to using a clear bra.

 

afshin i think is exactly right, now the question is how do we protect our light colored paints from uv if the wax that we religiously put on isnt providing the protection we want? if we put clear bra it defeats the beauty of true natural painted surface. maybe if we aerospace 303 the whole car....

 

That's a good question. I've learned through years of messing with different waxes, sealants etc that none will really protect your paint. The only way to protect paint is to keep the car in the garage and not drive it. You can minimize damage by waxing regularly and wiping any bugs, oil and other debris as quickly as possible but overall I'm convinced that waxes/sealants only make it easier to clean but don't offer much in the way of protection. Somewhat crazy to say considering I'm a detailing nut and I still spend crazy money on products but that's been my observation.

Have you tried waxing the previously covered areas to see if maybe the wax/sealant you're using may be causing some yellowing?

 

nope have not tried that, after removing the old guard i installed the new one immediately. of course when the guard is back on, differences are not noticeable. well i guess we will have to live with it, at least us owners with light colored cars, specially whites. but i think whatever we are doing is allowing our toys to age gracefully, if we were not the detailing nuts that we are, things will be worse. wonder if a company out there should invest in protection that ours cars really need.