Bad steering

Is this a common problem? I never know where my trucks gonna go. Especially above 65mph, it feels like its floating. It has a brand new rack/outer tie rod ends.

 

I have the same issue as with a lot of Tacoma’s. I own a 2015 and when I purchased with factory wheels and tires noticed it immediately. It’s called highway wonder and if all your joints and bushing are good the only thing I can recommend of which I did was to installed adjustable UCA’s, pricey, and set camber above 3.0. Eliminated it somewhat but I still notice truck want to walk at highway speeds. Anymore input to this issue is greatly appreciated. Thx

 

Sorry I meant castor on the adjustment

 

Increase the caster around 2.5 and it should feel like it will track better. Ideally, you should be 0* toe, 0* camber. and 2.5* caster. The more caster you have, the better the truck will track in a straight line. With an aftermarket UCA, you can increase your caster past 3.0*. I've ran it as high has 4.5* and it feels super planted at the range, but your MPG's will suffer a bit at that level.

 

I have my castor set at 2.8 of which I need to set it out a bit more since it still wonders but like u said compromises MPG and steering becomes stiffer

 

Cool thanks yall. Cant believe its such a common issue. How much does it affect the MPG when castors up past 2.5? I am also wondering if this highway wonder is hard on the rack and susspension components. When one wheel hits a rut, especially when coming to a stop, the steering wheel makes a quarter turn too. This used to happened before my lift. Any body try steering stabalizers? Are stronger sway bars a thing?

 

When I was at 4.0* caster, I lost approx 1.5 mpgs. I got a bit more bumpsteer as well, but I chose to dial it down around 2.8* caster. It isn't as stable, but it got my average back to 18.5-19 mpg

 

For sure, are you running stock height and wheels?

 

I was running stock SR5 steel wheels with 265/75/16. I was lifted 2.5 inches with Bilstein 5100's and OME885x springs with JBA std UCA.

Alignment Specs:
Front left
0.3 Camber
4.4 Caster
0.04 Toe

Front Right
0.1 Camber
4.1 Caster
0.04 Toe

I ran that set up for about 2 Years and 100K miles. It tracked well, was stable, averaged around 17 MPGs, but I did have bumpsteer whenever hitting a pothole or off roading rolling over an obstacle.

Beginning of 2018, I upgraded to ICON extended travel CO's, added an ARB front bumper, swapped the LCA for a MOOG since the bushing were shot, and got 265/70/17 tires and TRD Pro Sema wheels in Graphite.

Alignment Specs:
Front Left
0.1 Camber
2.7 Caster
0.02 Toe

Front Right
-0.2 Camber
2.7 Caster
0.05 Toe

Overall, I like the 2.7 caster better as it is better balanced for daily driving. Yes, it's a bit more switchy/floaty than 4* caster, but I'm not fighting bumpsteer anymore, I'm averaging 19 MPG's, and still cruises the highway just fine.

 

What does caster have to do with fuel economy? Shouldnt have any affect at all! Educate me!