I have a 16x8 Wheels what are the bigest tires i can put on them without them rubing. I dont want to trim any thing off and i dont want the tire sticking out pass the fender so it wont throw rocks on the side of my truck. Thanks

I would think you would only be able to put 265/75-16s on then. Also, you have to have more backspacing than 4.5" Take a look at my pics in my signature. I have 285/75-16s and rims with 4.5" backspacing and -5mm offset. I only had to do minor trimming with mine. I also have to figure out something for mudflaps since the GMC ones rub too much if installed. Just my 2 cents. I know there are other people that will chime in though.