Recently purchased a 2012 CM Limited. Installed a 2.5 level and 275/65-20 tires which look great. I did a similar lift with my 06 and when I did that I found that the speedo was off by about 5mph at 60mph (my wife learned the hard way), that said I am trying to determine the speedo difference with having gone from 275/55-20 to 65-20 (shop tells me about 2" increase in overall diamater). I figured the easiest way would be compare the speed on the nav to what my dash says. Here's the problem, I dont see an area on the nav that shows current speed.
Anyone know if there's an area to do this? I'd trust this more than my cell phone nav. Otherwise can anyone estimate what the speed offset would be in this scenario? I want to avoid the flashing red and blues.
Thanks for all the help!