I have the 17" MB TKO with 4.5" BS and 285/70/R17 BFG A/T KO and they are just inside the stock fenders, just perfect. I am not a rock crawler dude, but moderate 4x4 driving in Moab and Colorado passes and highway - brakes are just fine on my 2013.
2013 JKU Sport S | 3.73 | Auto | LSD | Tow | MB TKO 17x8.5 | BFG A/T KO 285/70-R17 | Ace Sliders | Spidershade UltraMesh | Ri-Grip Hand solid front grab handles | RR bolt on rear grabs handles | Hard and Soft Tops
Husqvarna TE610 & TE450, Royal Star Venture
2009 Mazda MX-5 Miata
Ham Radio Operator K7MDL, often VHF+ rover