Waiting

Per Jeep's website, the Rubicon tires are the same size as the Islander and Mountain (LT255/75R17 BSW Off-Road Tires) and, I thought, all models have them same spring height at curb weight. Why then does the Jeep website state the Rubicon has 10.2 inches of ground clearance and all the others have 8.8 inches of clearance? By the way some parts of the website state the Rubicon has 10.5 inches of ground clearance. What am I missing?

davidwm71

Here's something else to add to your question.....


If the lowest point on the cheap measured for ground clearance is the bottom of the differential then will curb weight or spring rate have anything to do with that measurement?

Do the Dana 30 and 35 hang lower than the 44? Are the Rubicon tires stiffer and hold the Jeep a little higher even though the "numbers" on the tires say they are the same height?

davidwm71

I wonder is that was a Freudian slip?

dpoelstra

Rubis have stiffer springs creating a little lift.

Waiting

I still wonder why the increased ground clearance claim, due to the diffs being the lowest point.
Tire side wall stiffness was mentioned, but the Rubi and Isl/Mtn have the same tires, right?
I just think the Jeep website stats are F'd up

zero_traction69

well my guess would have to be that the dana 30s hang a little lower then 44s maybe? because when i compared them on line the only difference between them i found was the axles and differential, and the difference between the sarah and the rubi its got 18s so it would actual sit a little higher up then the rubi, so more ground clearence but thats the only thing i could figure out

DirtyKK

sounds like bull honkey to me

2climbbig

Actually, they don't use the diff for the lowest, but rather the lowest point outside of the diff which is your gas tank at mid section.

Ario56

Even though the Rubicon, mountain and islander all have 255/75/17 the sahara has the same over all tire size 255/70/18. Just a larger rim, and smaller sidewall. Unless the deep tread of the M/T's give it a taller stance. But it all breaks down to aspect ratio.

adamisadam

An LT sidewall will not compress as much as a P tire sidewall. So Rubi tires of same calculated height will likely stand taller than Sahara tires. Also, there is a LOT of tread on them which could make the tire a tad taller when new than the calculated height shows.