holycaveman

Yea you are still going to have to put it in neutral going down steep hills. My brothers wrangler was scary trying to leave it in gear.

For the cost of upgrading your brakes you could just buy bigger axles. Bit you will lose one of the main benefits of running 35's.

In my opinion the 35 is a transitional tire size. If you are going to do all the work of swapping axles, then may as well go at least 38” to gain some diff clearance.

holycaveman

Wheeling on 35's with stock gearing is hell on the transmission in high range. Running in low range is transmission friendly.

Same with od. With my 33's and stock gearing I never see over drive. Its not needed and adds wear on the transmission.

Low range allows the motor and tranny to work less. This does not add stress to the axles under normal wheeling. Only if you are in a situation where a wheel is locked or bound up to the point where a motor either stalls or breaks something would you have to worry about added gear ratio. Often times the speed of a wheel followed by a sudden bind is what breaks parts.

Atmos

really. really??
go ahead. keep telling people 35's on their stock jeep is nothing to worry about
for god's sake please at least tell them to put a transmission cooler on there
people will do what they want I guess

sorry

Atmos

yes wheeling in 4hi isn't the smartest. you're making your engine and transmission work harder instead of utilizing the gears in your transfer case. the worry with undergeared over size tires isn't breaking something. it's that you'll be stressing your transmission and making it run really hot. overheating is the number one recipe for trans failure. then there's other small stuff to worry about such as still having that toothpick of a stock tie rod on there

stang65

how does adding 2.72times the amount of power not add stress to the axles? 2526ft/lbs of toqrue in 4hi and 6876ft/lbs of torque on a stock ax15 jeep 1st gear in 4low? first gear ax-15 is 3.83:1

stang65

thank you for explaining that. I have never had issues with over heating my transmisson. but then again I use 4hi when im moving a decent pace and 4low when crawling. In any case its not as simple as bolting 35s and having a safe and reliable wheeler with jeeps. I have been learning alot sense going to 35s on my jeep.

holycaveman

Your motor puts out x amount of torque. This never changes.

I Have broken more axles in 2wd high range than any other.

Its hard to explain. Your axles will handle x amount of stress. How you achieve x can be reached many different ways

You can not just make a blanket statement by taking a gear reduction ratio and saying your axles won't hold because of it. There are so many other variables you are leaving out.

holycaveman

Being a mechanic for a living I am quite versed in giving people options and the ups and downs to their choices.

And quite comfortable doing so, thank you. 8)

stang65

I understand that the power at the engine doesnt change but the power at the wheels does.
basic calulation for power at the wheel for a manual transmission
(engine power X transmission ratio X t-case ratio X axle ratio)
(215ft/lbs X 3.83 X 2.72 X 3.07) = 6876ft/lbs

I never said it was a blanket system i was just pointing out that you add stress to your axle but gearing down. but it reduces the stress on the transmission by gearing down this was pointed out to me by Atmos. I have broken more u-joints and rearends in 4lo than i have 4hi. personal experiance. when you increase any veriable in which adds stress on your compents you have to have a idea of how much your compents can handle. weather it be tire size or grip (airing down) amount of power from the engine or gear ratios. even terrain in which you wheel as to be taken into the equation.

Atmos

breaking an axle isn't so much about how much torque you have going to it, but instead speed. if you are in 1:1 and roasting your tires off you will most likely break when your tires find sudden traction. something has to give. crawling in low you should only break if you bind up the tire in a crack or under a ledge. being a throttle jockey breaks stuff




here's a quick list of everything I've broken since I went to 35's
popped a cap off a ujoint - upgraded to nitro alloys and ujoints
wasted a zj TRE - 1 ton steering now
both LCA bushings
broke the welds off my double shear track bar mount
unit bearing completely shot
twisted splines on a D30 shaft
and my brakes still SUCK!

list of things I broke on 33's
nothing

stang65

luckly I had already built alot of my stuff up and havent broke anything other than driveline u-joints. been out with it about twice a month. but im all so not pushing it due to me having bronce hp44 and 9" at my dads waiting on money to install.

Gee oh Dee

Your not wheeling hard enough then.

Slim357

Dont want anything bigger then a 36...

Atmos

come on my you know how I worry about getting a dent or scratching my paint

Gee oh Dee

Lmfao!!!