Hello, first post here. I just picked up a 1994 gmc Sierra. Now I was told
I can't put 15s on it or it will destroy my calipers. Is this true? Also does anyone know where I can get a third brake light, because mine is missing. Thanks in advance!!!

 

i have had 15 inch american racing rims on my truck for 2 years now and i have never had any issues with caliper failure and i have had stock steel chevy rims too with no problem. now as for the third break light i would just go to a local junkyard to get one

 

What is on your truck now? And what does the sticker in your door jam say the rim and tire size is stock on your truck. If all else fails. Find 1 rim that is the size you want and see if it clears the calipers.