I am going to put some nitto grappler at 305/60 18 on my 06 f150. The tire guy said that it might be a good idea to upgrade the rotors. Any comments, and by the way suprisingly the tire guy doesn't do brakes.

 

Depends on how much bigger the tires are. More roatating mass=more momentum=longer stopping distance. Something to keep in mind. for stock rims and a little bigger tires maybe not but you will notice a difference. Just make sure they are in good working order.

 

Upgrading your brakes are always a good mod.