These Tundra parts are an awesome mod for the right rig. Depends on what you want to do. I gave this mod consideration and eventually decided against it. That doesn't make this undesirable, just that it didn't' fit my goals.
The major consideration for me is working within the fender constraints, suspension geometry, and maintaining strength and durability for heavy tow loads. While track width is generally a good thing and allows for more travel while maintaining better geometry throughout the stroke, I needed to maintain balance for a daily driver and work within the fender clearance of the 200-series. Keeping tires and wheels within the body lines to maximize aero and efficiency.
Tundra arms push each tire ~1.5" out. When running larger diameter tires, there's a need to modify offset to keep scrub radius (that pesky thing!). With matching aggressive tires (34+), that means another 1" out. That's a min total of 2.5" out, which starts putting tires into the fender. Particularly with wider more aggressive tires that may add another .75", for a total of 3.25". Add a chunky 2.5" spacer to the rear axle to match track width.
That's pre-runner style territory requiring overfenders or a body lift. What it gains for off-roading performance, it might give to durability. As every component starting from the control arm bushings at the frame, through the suspension, wheel bearings, are more loaded. As much as I believe in the core strength of the 200-series, the 5" total wider track at the rear axle may compromise payload handling durability, which is what ultimately gave me pause. Perhaps swapping in a Tundra rear axle may bring this back into harmony? (Curiously Tundra rear axles have lower GAWR than 200-series, 4150lbs to 4300lbs respectively).
I think it works however for a more dedicated off-road rig.
www.rcvperformance.com
