21 3.5L XLT 4x4 CC 5.5box 3.55 with Max Tow, leveled on 295/60-20's Nitto RG with 1" rear block.
I filled up my rear tires to 48psi and fronts to 38psi (E load)
I used a 22ft Speed loader trailer (2700lbs) towing a lifted 1st gen Tundra 4x4 roughly 500 miles.
The F150 towed it easily with a ton...
No, I went ahead and got the rough country kit instead and am just going to use their rear blocks. I'm out the cost of the Eibach kit. Plus the rough country 2" kit including the font spacers was cheaper.
I also just got back from a 4 hour interstate (75mph speed limit)trip. On the way out into a 10-15mmph head wind I got 16.5 cruise set at 81mph.
On the way back 10mph tail wind same speed I got 18.2mpg.
My 21 truck IS recalibrated for the 295/60-20 Nitto RG's on stock wheels with 2.5" level. I drive in town and avg 13.7 right now......... 3.5L Eco CC 4x4 3.55. I'm about to take a road trip this weekend so we will see what it does but I'm not expecting much. Coming from my stock tire 2018 truck...
I just got my order of 2.5" rear replacement blocks from Stage 3 motorsports. Stock blocks are 1 1/4-1"1/2 tall on my CC 4x4 NON FX4 with Max tow. I have a 2.5" level and want a little rake for towing. It should lift the rear 1" supposedly. The kit I bought was Eibach 2.5" rear blocks and it...
I'm running 2.5" lift and 295/60-20 Ridge Grapplers on factory chrome 20"s and no issues on the UCA. My dealer put them on and also recalibrated the speedo, it would be 2-3 mph off. The dealer had a similar truck but 34x11.50 Terra Grapplers on the showroom floor. My setup looks wider and way...
I agree 100%, I came from an 18 and it was super solid even cruising at 80+ down the interstate. My 21 wanders a bit and almost feels wobbly (boat like). Way too soft.
The Truck rides like a boat (floaty at higher speeds) and a bit too soft. Of course my 295/60-20 Ridge Grapplers have some to do with this but... I had Bilstein's in the rear on my 2018 and it handled much better. Don't get me wrong the 21 feels more like a Cadillac and bed bounce isn't like the...