because of the extended length of the wheel base on the 4dr I would strongly suggest 35" over 33". On the 2dr the difference isn't worth worrying about.
Either way your Jeep will be as they say "gutless". But that just means you use more gas like a pig on the road. When crawl'n it's just fine.
You can add a cold air unit and a flow thru muffler to improve your power curve but be aware that its expensive (around $600 for both) and that will take a long time to ern back in gas savings (which aren't all that much as it will still be a pig ).
Also be aware that the computer can only get to 33" tires so if you go bigger there will be some error in speedo and milage computation.
I am on 35" Pro-Comp ATs and LOVE them.
When my speedo says I am going 70mph I am actually going 75mph. A very small error and not a big deal.
I get about 15 mpg on the freeway and about 12.5 in town. Oddly enough I get close to 15mpg when crawl'n too... which is fine with me as this is for me an R.V and not my daily driver. I couldn't stand 15mpg in my daily driver!
Remember the difference in hieght between 33 and 35 is only 1 inch vertical not 2 inches. For every inch on diameter you raise your axel centerline 1/2".
Enjoy your Jeep either way!

 

This was my point....Then I thought of a new point!!!..........

You have 35 or 37 inch tire and 3.5 or 4.5 lift...Your driving up a hill and press your brake pedal to prevent hitting another car and your brakes don't work ( it has already happened )
Every one wants to blame the Manufacture for not recalling the vehicle......But WHAT IF the manufacture says " We did not engineer the vehicle to operate under those modifications".

I am no lawyer ; but I think the Manufacture now has a LEG to stand on in a court of law.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Just to be honest ..I LOVE the look of 35s and a 3.5 lift ...ain't nothin cooler!!!!!

Just food for thought ............Again! good luck with your decision

 

Hey I would like to say thanks to all the great replys to my tire size question. What a fantastic group I have joined up with. The 35's win. Thanks again for everyones help.

 

I am with you. When I get my Rubi (someday 6 -8 weeks maybe??) I am going to go with a 3.5" lift and 35s. The stock tires on the Rubi are about 32s already and IMHO they look way too small.

 

Do you have a short garage ? I have a standard 7' garage door, and mine fits in with a couple inches to spare even with 4" of lift and 37" tires. Much more and I'll have to park it outside though.
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I agree between the 2 & 4 door. When I get an unlimited, I plan on going 35". The 33's are fine on my 2 door.

 

I'm pretty sure I have a standard 7' garage, but I'll measure. Do you have a hard top or a soft top? The soft top sit's higher. Your Jeep is 8" higher than mine. No way that would fit in my garage.

 

Even if you have a standard 7' door opening, the lowest point will be where the base of the door itself sits. Before I had a Wayne Dalton iDrive motor installed with new tracks that go up higher, I only had about 6'-2" of clearance on my garage. With the door up higher and no track in the way, I now have 6'-11"

 

Other then not having the same size spare tires jeeps look great but obviously the redrock looks much better!

 

Yes! My garage door sits low. it's the original wood door and track from 1950.