Just ordered the 5100's. To be safe I ordered the Zone uca's. I am going to set the bils to the 2.75 setting. I want to run the Firestone destination mt in a 35/12.50/20 on the stock rims. I have searched and I see some people use a spacer and some don't. Some say the tire is too close to the uca. That is with factory uca's. I can't find anything with the Zone Uca. If a spacer is needed what ones do I buy? Thanks
