So I have been reading a lot of tire weight threads lately and how it effects torque and such. Here's my question, does one or the other, tire/rim, effect the force Put on your axle more than the other when it comes to weight? Here's the situation it pertains too, my friend is running 39.5" IROKS with spyderlock rims, the tires weigh 85lbs and the rims weigh 45lbs, totaling 130lbs. I will be running 40" mud grapplers with ATX slabs, tires weigh 104lbs and the rims weigh 25lbs, totaling 129lbs. Does having a more balanced weight ratio for your tires and rims help anything, just as does an unbalanced weight ratio hurt anything? Just curious if one setup might be more detrimental to drivetrain components etc. than the other? Maybe I'm overthinking it but curiosity has gotten the best of me on this one and we debated it for quite awhile at work so any crazy ideas or answers are welcomed

 

Weight is a more of a less contributing factor when it comes to your axles and/or "C's.... there is more to just the "weight" aspect. The height plays more of a role if you wanna look at it that way. Again, I'm not saying weight doesnt contribute because it does(especially when you are at 39's or larger like you said) being that it's taking a lot more to turn them, which is more on your tranny & shafts. You can go back and forth with this, and people will on this forum.

Bottom line is, you will break something sooner than later running tall, heavy tires on stock axles/driveshafts/ball joints/etc. Weight is weight when you need to mash on the pedal to get things moving... Dont think about it as just being additional weight in tires cause again, you should be thinking about driveshafts, C's, axle shafts, ring & pinion, ball joints, etc.

I'm also no pro, but I'd like to think I have some experience in the jeep world. Hope I helped you understand a little more or answered your question. I'm not the best at explaining things that are in my head on these forums.... it makes sense in my head, just sometimes I question how I write it on here....lol

 

1lb of rotating weight equals 7 lbs of static weight if i recall correctly so a 120 tire/wheel in motion is equivalent to 840lbs of mass ( dont flame me if im off a bit but its close i think )

 

While I don't plan on bashing you for your mathematical analysis of tire and weight mumbo jumbo, I will say to forget all that crap and stick to the fact that you are riding on BIG, TALL ASS HEAVY TIRES! lol.... common sense sometimes is your best answer in situations like these. 1lb difference? Come on now, lol.... no reason to "over think" it, ya know?

Again, I am just making friendly banter and saying I don't think the OP needs to over analyze it to that extent. Hopefully you don't take it the wrong way and we can be adults about it, some people tend to be too uptight on here....

 

that was just an example to point out the huge loads applied when you go big , not mumbo jumbo . i build engines for a living lol . math is your friend

 

Well, you have a point there then.... I retract my comment......maybe.........HAHAHA! jk

 

Hence my hesitation in going with 35s at 70 lbs. I guess that is probably okay though, right? No point going to 33s when I already have 32. Only the 35s will give me more clearance. The Nittos/Toyos at 80 lbs is a bit much, though the next one down is 70. I do offroad though do not crawl on big boulders. Will keep an eye on this thread.

 

Dont talk to me about tire weight.... lol.... my tires weight 93lbs each....minus the steelies.

 

Stock axles? Hard wheeling? No issues?

 

just go with what you want and dont worry bout it . if it breaks fix it or upgrade . chances are unless its just beaten all to shit youll be ok