Proxy claim the have a stiff reinforced side wall to help protect the rim, called curb savers. I have bumped curbs at low speed going through drive thru windows and have never hit the rim. Today I put it to the test on accident.
I was making a right hand turn from one road to another going around 8 mph. It was a narrow road and there was an on coming car. So I had to cut it tight. Bang the right rear hit the curb, bottomed out the truck and kicked it in the air a little. I have billet aluminum Billet Specialties rims. At $675.00 a rim I almost started to cry. I pulled in to the next parking lot and slowly walked around to see how bad it was. The tire had a good rub mark about eight inch's long and a couple deep scraps, but no a mark on the rim.
My tires are 1 1/2 wider than the rim. I am going to go have it balanced to make sure it didn't bend the rim. I did want to be the test dummy for this, but o-well. I have had the proxys for about three years and have liked them very much. Now I love them

 

damn i had nitto nt404's on my old truck with billet specialties and lets just say it didnt help . i curb rashed about a inch long mark . walmart parking lot (slick) friends behind me (shwoing off ) just got down raining (even better ) dropped the clutch in thrid gear doing 20 mph and that one wheel wonder sent me sliding . brakes didnt work , downshifting didnt help no wya to steer out of it i hit a curb . went up it and stopped a foot before a light pole . not 8 seconds later i was gone haha and red faced form embarrasment

 

i tested mine a few weeks ago. hit a curb HARD going about 15mph showing off my new exhaust to some friends. caught loose gravl in the street at the top of first and lost control it BARELY bent the rim but theres no rash at all. nobody can even tell the rim has a flat spot...but im **** like that

 

Do you mean 1.5" wider (one and a half inches) wider?

 

[QUOTE=Naked AV]Do you mean 1.5" wider (one and a half inches) wider?[/QUOTE

yes 1 1/2 inches perside. i will correct that in my post