Howdy all, trying to get everything in order to complete my build but have some questions due to Minnesota bumper height laws. Was hoping I could get some measurements from people running 4.5" of lift with 37" tires and stock bumpers, the measurement should be taken from the lowest point of the bumper. I appreciate the help as this will make a big difference in what direction I take, as I'm debating on a 4.5" synergy short arm or long arm lift over a synergy 3" lift with flat fenders to make 37's fit. Only problem with the flat fenders is I than have to worry about how far the tires stick out past the fender, ugh... By the way the legal height for front and rear bumpers is 25"s from lowest part on the bumper, but if its like inch over I wont worry to much and consider aftermarket bumpers that sit a little lower on the jeep. Thanks much!

 

Lift height and tire height are going to vary by MFG. But it shouldn't be rocket surgery to get in the ballpark of where you will end up.

Measure your bumper now. If you currently have 32's that measure 31" under vehicle weight, and you are going to 37's that measure 36" under vehicle weight : 36 - 31 = 5" difference. Half of that is a 2.5" height increase for the jeep. Many of the coils on the market give the stated height when fully armored/loaded. Others give the stated height for a stock/light jeep. Assuming you are going with a brand that makes them heavy, add an inch to the number as a ballpark if you have a stock/light jeep. So either 4.5" / 5.5", or 3" / 4". Light JK with 4.5" coils and 37" tires = 7" to 8" total gain (depending on vehicle weight and specific tire chosen). And 3" coils would be 5.5" or 6.5" (again, depending on vehicle weight and specific tire chosen). Then just add those to the current bumper height and you have your ballparks.