LR4 Compomotive Question (Not Tires, I Promise)

#1
I'm currently running 18" LR3 wheels, with 1.25" spacers as originally described in the Overland Journal LR4 build thread here.

I've recently been looking at the Compomotive wheels that are popular here.

My question for those that understand the issues better than i do, is this. Would running the Compomotive wheels provide any benefit as far as less stress on the CV joints, or otherwise versus my current spacer setup?

Thanks
 
#2
I can't speak to the Compomotives but I do not believe they require spacers!!!???? I can't imagine a great company like Compomotive designing a wheel that needs a spacer so I am going to use my best judgment and say they do not! On the answer to your driveline question, ABSOLUTELY if the spacers are gone, the load on the hubs and bearings is reduced significantly overall. Does this transmit directly to the CV's; I would say no until the hub bearings start to wear. Once the hubs go, then everything on the driveline and steering gets more wear and tear as the hubs wobble around.

Wheel designers generally design wheels with the correct backspace and offset for clearance and performance but understand that there is always some sort of trade-off for putting those 18's on. I do not think I have heard anyone in the years I've been on here say Comps caused anything but an increase in smiles per miles and performance and usability. The only reason I didn't buy them is that I already had 18" OEM wheels so the tradeoff was not worth it.

Hope that helps, I'm sure the Compomotive users will pipe in on the wheel itself but most of us agree on spacer use; they have their purpose and positives and negatives that come with them and it's on you to decide what you are willing to accept.

Rover on my friend, Rover on!
 
#3
I'm currently running 18" LR3 wheels, with 1.25" spacers as originally described in the Overland Journal LR4 build thread here.

I've recently been looking at the Compomotive wheels that are popular here.

My question for those that understand the issues better than i do, is this. Would running the Compomotive wheels provide any benefit as far as less stress on the CV joints, or otherwise versus my current spacer setup?

Thanks
i am running spacers as well and have had zero issues to my CV joints, and i have run spacers on a bunch of vehicles other than my range rover with no issues. I always read on the internet that you're going to have to have problems if you run spacers but I nor anyone i know that runs spacers for a long period of time has had any issue.
 
#4
I'm sure not into forum disagreements and all that hoopla. I wasn't intending on not offering an opinion, just offering the "science" behind suspension and wheel designs and my personal experience.

My opinion is: I don't use them because I have my opinions on them due to my research and experience! hahahahaha:ROFLMAO::ROFLMAO:

Do your own research on "scrub radius" and "steering axis inclination"; there are some really good articles out there in the motorsport industry, on and off-road as well as some great engineering YouTube videos for us visually stimulated types (ME). Am I saying your bearings or suspension are going to fail? NO, but I am saying there are trade-offs you need to decide are worth it or not worth it backed by really smart engineers who get paid for this.

@Evomike glad we met, now you know a person who had problems! hahaha All good man, I'm just trying to help a guy make a decision off science and engineering.

Rover on my friends, Rover on!
 
#5
I'm sure not into forum disagreements and all that hoopla. I wasn't intending on not offering an opinion, just offering the "science" behind suspension and wheel designs and my personal experience.

My opinion is: I don't use them because I have my opinions on them due to my research and experience! hahahahaha:ROFLMAO::ROFLMAO:

Do your own research on "scrub radius" and "steering axis inclination"; there are some really good articles out there in the motorsport industry, on and off-road as well as some great engineering YouTube videos for us visually stimulated types (ME). Am I saying your bearings or suspension are going to fail? NO, but I am saying there are trade-offs you need to decide are worth it or not worth it backed by really smart engineers who get paid for this.

@Evomike glad we met, now you know a person who had problems! hahaha All good man, I'm just trying to help a guy make a decision off science and engineering.

Rover on my friends, Rover on!

curious what problems you had because of the wheel spacers? A quality bolt on wheel spacer will have no more adverse effect on wheel bearings than any setup larger tires and a negative offset
 
Last edited:
#6
Wheel bearings for one. I had less than 11k miles on bearings, one was worn really bad and the other starting. I was running some fairly heavy weights so that extra moment put on the bearing face is the likely suspect for premature wear. Additionally, I lost suspension and steering travel without being able to fully tuck or turn the wheels without rubbing. Add an increase in unsprung and sprung weight with heavier/larger tires and all that other stuff we bolt to our rigs and I decided it was not a good option for me. Scrub, axis inclination, toe, camber, bump-steer, and track width are all impacted even more when we install the taller and wider tires we want; hence why we put spacers on. All of these changes have 2nd and 3rd order effects to the remainder of the driveline, steering, and suspension.

The biggest indicator I noticed was with my tie rods; when I removed them the braking shutter went away almost completely. Of course, the tie-rods were worn, but the play was amplified with the spacers installed due to the change in off-set under braking and acceleration. That's when my buddy started explaining to me about the various geometries we noticed on the road vs. off-road. He designs off-road suspensions on some reputable desert runners and now UTV market as well with some peeps from ORW race vehicles. I did my own research on this stuff, not that I didn't trust him, I just didn't know about everything he was swelling my brain with.

Like my 17" wheel mod; it came with some braking considerations I needed to assess! I did the research and found it met my desireable margin, safety is the number one concern first over function.

I ran spacers for a while and then realized that I was not getting the benefit over what the science validates. I believe hub-centric spacers are relatively safe when it comes to the likelihood of a catastrophic failure, however, they do not change the 2nd and 3rd order geometry issues that come with wheel spacers.

Like I said, its just my experience and I'm not trying to push my opinion on anyone, however, there is science behind it that I believe people should be aware of before they put them on; I know it's what I would want in advice.

Cheers fellas!
 
#7
Adding to this topic, I am running Compos on my D4 HSE without any spacers, lifted with IIDtool and only got rubbing on full lock offroad otherwise nothing. Awesome wheel

 
Top