The Jeep Wrangler is one of the last production SUVs with solid axles front and rear as of the ’17 model year (don’t forget the Mercedes G-Wagon, we almost did). The JK Wrangler’s success around the world is simply amazing. If solid axles are so antiquated, why does this thing work so well in the dirt and sell like half-price hot cakes on Sunday morning? Rumor has it that the next-generation Wrangler due in 2018 will still have solid axles. That’s good for anyone who actually wants to use the new Wrangler off-road. Having said that, the Wrangler axlehousings have several weak points with thin-wall axletubes and spindly inner knuckles that can bend under heavy use even without larger than stock tires.