There is plenty of discussion here about rolling rear fenders. We do this to allow mounting wider wheels and tires with more offset. Some members here advise against doing this because of paint cracking and possible rusting.

I believe that our front fenders are rolled at the factory.

Question: Is there a reason the rear fenders are not rolled at the factory?

 

Wonder the same thing...

 

i am sure they could do it from factory, but charge an extra 1500-2k for it.

 

Sheet metal manufacturers say it's easier to "roll to an edge" than configuring a 90 degree fold along an arch.

It would actually cost less for production to roll the rear fenders.

 

i was being sarcastic, but yeah they could easily do it, like you said the fronts are done..... so why not the rears? cracking wouldn't be an issue if they did it before paint

 

Good question.

The angular lip is on the car for a slight bit of added torsional rigidity. NOT chassis rigidity; rather, to reinforce the fender to avoid any tendency to "wrinkle" due to any torque stress across the fender if transmitted from the chassis/subframe.... rear wheel drive and all.

If you've ever worked at fabricating anything out of steel, always better to have an angle on the edge rather than a flat edge to avoid bending.

Front fenders likely don't experience the type of twisting (torque) a rear fender does under acceleration and fronts have to clear a turning tire/wheel assembly.

 

Yes. I think you answer the question. For example… pulling the rear fenders… You can do this by simply grabbing the fender with your hands and pulling outward. However, this technique doesn’t work well unless you roll the rear fenders first (eliminating the angle on a flat edge, as you mention).