How to Check Your Caster

After you install a lift, it's important to do an alignment on your vehicle. Caster is an important setting that needs to be adjusted correctly, especially with taller suspensions.

Iron Rock Off Road:

DIY Alignment Tools:

FAQ:

[jessecampbell]

I've been scratching my head wondering how to check the caster on my landcruiser in my slightly slopped dirt drive way. I never thought about leveling the vehicle on stands! This is exactly the type of solution I was hoping to find. Thanks a bunch!

[jamesdewer]

I used a pair of your lower control arms only the lowers for 2.5” lift on my WJ and the magic number on the lower from eye 2 eye lower control arm of 16” using a transfer punch to be precise, 3/8 to 1/2" is the magic number just enough to add a few degrees behind vertical per your diff cover example! ❤ the stock measurement stock lower control arms were 16 inches IDI and I went out only 3/8 so 16 and three eights or just below a half inch in the bubble goes positive thanks

[donniehurt]

Thanks for the video! I have been trying to set my caster on a lifted jeep but with the jeep on the ground. Sounds stupid but I never thought about the jeep not being level🙄

[ibberman]

So I'll have to figure out what I have and then how to adjust it. 94XJ and 2004WJ. Crawling under the Jeep I see the control arms, but did not find how they adjust. I'll keep it level, thank's.

[joejimenez]

Do I need to lengthen or shorten the upper control arms? Seems as though my jeep XJ hp D30 is rotated too far forward and I need to shorten my upper control arms. I’m just trying to figure out what positive and negative caster is and what the jeep needs

[musicismeds]

Hello guys. Hopefully, you guys can point me in the right direction, finding the correct caster for my Jeep WJ 4.0. I recently installed a new 4 inch bilstien lift with core adjustable control arms all around. I have been to numerous shops, and no one can ge this caster set correctly. Do you happen to know a number i should shoot for? From my research, i am seeing 7° should be a go-to. I believe i am going to attempt to do this myself. Would increasing the length of my lowers and decreasing my uppers get me where i need to be? All my local shops are putting my caster around the high 5s. Any advice would be much appreciated. Thanks.

[clayton]

Question, , , if I zeroed my digital angle finder to the frame and this would b on an straight front axle truck, , , and then put it on the true flat of the pins that hold the axles and hub on, , would this b close, , basically what you are showing, , I’m just wandering if I zero it on the frame, ,

[tnamen]

Sir, my car i20 front struts shockers are aligned perfect 90 degree with respect to ground when steering wheel is at normal or 0 degree position. However, the left shocker slanted bit about 30 degree approx with respect to its original vertical position when the steering is full turned to left. The same is for the right shocker when fully turned right. Is this change in vertical alignment normal??? Thanks.

[santiagohernandez..]

My caster angle says 7 degrees in a 04 WJ with a 2.5” lift.
something must be wrong right?

[Mavrick-]

You can’t apply this to every car, it may work for your keep though

[joechase]

Can you make a video showing your wheel alignment tool?

[joshuamcdonald]

How do I adjust the caster with the y link caster adjuster? I tried to do it but the slide is getting worn down and my caster keeps changing do I need to loosen the lower control arms also?

[hector]

Hello this caster adjustment be done on a 1999 grand Cherokee limited, v8 4.7L?

[mitchb]

what is the purpose of the string and level?

[dionlewis]

Do you have a email? I’d like to show you something having to do with my caster cause christ I’m having a major head a cuh e

[blackstonshingaling]

You won'tget the right adjustment doing that way. the weight of the front end has to be on the tires plus It sounds like you/er describing a camber setting not caster

[chadsims]

Improper, false readings everytime, checking caster with out a caster where is your caster swing?