Anyone else disappointed with 4.88s and 35s?

[blondejoncherokee]

OP,

what 33" tires were you running ? On what rims? What was the actual diameter ? for example, alot of 33s measure say 32.5, and after wearing down approach say 31-31.5. some brand new 35s measure say 34.5-34.9. also a heavier rim.

I have an auto with 4.88s:

Had 33" swampers and 4.88s on black steelies. loved the power.
then I ran 31/10.5s for while, the power was awesome. I was still able to go 90 MPH, just at pretty high RPMS. I have a manual TC lockup switch. RPMS were not that bad on the freeway. then I went to 35s, lost some power in the hills, and it was tough getting used to it on the trails since I was used to the lighter 33s turning easier in the rocks. Then I went to 37s. Power was the worst. a real heavy 37, togo Mts(95 pounds each) . recently, I went with some 36/13.5 bias ply iroks , they are the same weight as my old 35" pro comp extreme terrains (66 pounds each) on some beadlocks, and I love it so far. power is decent. freeway RPMS are low which is nice, not as low as the 37s though. In all cases over 33",
I wish I had a 44 or a 60 front so I could run 5.38s or deeper. I have a tired renix with tons of metal added, cage, spares, tools etc. Thing weighs a ton.

Secondly,

Do you have new plugs, plug wires, cap, rotor, o2 sensor, air filter, oil change , some MMO in oil and gas, or has it been a while?

How is your TPS? Have you tested it recently? when my TPS starts to crap out the jeep gets sluggish. I replace my NAPA TPS almost twice a year, probably due to hood vents letting lots of water in

 

[boostamante]

My XJ on 35's and 5.13's is not too shabby off the line. It moves when it has to and that's with an old 240k motor in it.

 

[Hillenbrand]

I would want deeper than 4.88 if I had an auto. 4.88s in my jeep with a manual and 35's is pretty good. I run a really bald set of 33" ats on the street and I raced my brothers stock integra when we were both in third gear and I was pulling away from him pretty quick.

 

[z06elmo]

I have 4.88s with 35s on my 2001 with a 5-speed. It's actually decent and I'm okay with it. Revs are around 2700 at 70mph. If it was an auto then 513s may have been better, but for a manual I'm fine. I'd say the weight of the 35s and all the armor added etc is what's making my rig so slow.

 

[TheCodeMonk]

Worlds slowest jeep: (Mine) 3 inch lift, 35x12.50x17s.. 355 gears.. Oh yea! :gee:

Hey, you have the same gear combo as me right now!

 

[jonzer12]

4.88 and 35's. If 5.13 was an option I would have chose it but 4.88 is not bad at all.

 

[Locked98GC]

I had 4.88/35's on my Grand with a 4.0 and thought it was better than 3.54/31's. When I do the Cherokee it will have a 4.88/35 combo. If I want fast/quick, I pull the Corvette out of the garage.

 

[souske]

I like my 5.13s and 33's, if only i didnt run out of gear so darn quick

 

[sdspearo]

Another satisfied customer running 4.88/35's with a 5 speed with no issues. Combined with the 4:1 t-case the crawl ratio seems just right for the style wheelin I do (except the time when I got too heavy on the gas and ripped an upper link off )

 

[bluejeepkid]

What's good or bad is in the eye of the beholder. Honestly, I think my 35s on stock gears isnt that bad for every day driving. However I do plan on going to 4.56s to get some more pep offroad.

 

[XJLI]

What's good or bad is in the eye of the beholder. Honestly, I think my 35s on stock gears isnt that bad for every day driving

You are crazy

 

[DaveS98]

My 00 with 90k on it sucks gas like a mofo with 35x1250x17s and 355s. I get like 12 mpg tops.

I leave er in 3rd gear too. Otherwise id be crusing at 40 and 4000 rpms which would suck dick.

 

[Nealio240z]

I ran 35's with 3.07 gears for a few months- sucked... but doable. I now have 4:88's behind my ax-15 and can bark second gear all day long.
Not disappointed at all.

 

[SeeingSpots]

I now have 4:88's behind my ax-15 and can bark second gear all day long.
Not disappointed at all.

Same here. And I'm at 7000ft altitude.

 

[Crfrider]

My 00 with 90k on it sucks gas like a mofo with 35x1250x17s and 355s. I get like 12 mpg tops.

thats what i get on 31s.........!!!1

 

[2001XJ]

You are crazy

haha..i read this and laughed out loud...

 

[2001XJ]

I ran 35's with 3.07 gears for a few months- sucked... but doable. I now have 4:88's behind my ax-15 and can bark second gear all day long.
Not disappointed at all.

I should have mentioned this is pertaining to an auto so observations when using an AX-15 are irrelevant

 

[twodoorXJ]

I think the rotating mass has a lot to do with it. Before i swapped in my 44s and 35s. I had a hp30/8.8 combo, 3.73s, and 33" MTRks on ravines. My jeep was honestly pretty quick. Once i swapped in my 44s(4.88s) , 35" MTRks, and heavy steel wheels with rim stiffeners, it felt a lot more sluggish. Its still faster than my friends TJs with 35s. At 65, im at just above 2500 rpms, and i get around 15mpg highway, 12ish city.

When i go from my DD (95, 4.0 5 speed, 3.07s, 30" ATs) to my red jeep, the red jeep FEELS quicker off the line because of the lower, but i know my DD would beat it in a race.

 

[CoryMJ89]

I'm debating on gettin 4.88 with my 35s but I am buying 37s as soon as my mtrs wear out but was thinkin possibly 4.56 maybe right now I have 3.07 but it has to change soon so help?

 

[ocean_jet]

I have been happy with 4.88 and 35's. (AW4)

It's seems to be a good set up for what I do... drive 500 miles on the highway and then rock crawl. I cruise about 75-80 on the highway, and the rig is pretty capable crawling in the rocks.

As for accelerating from a dead stop... I was running 3.55 with almost 32" tires before I switched. 4.88/35 was an improvement for acceleration from that.