Some of the 3.8L owners might chime in if they see the thread, but my understanding is the 3.8L is pretty forgiving to higher RPMs, moreso than the 3.6L is. I can testify the fuel gauge drops fast on my 3.6L cruising at 3k rpm on the highway. I'd suggest 5.13, but it's personal opinion.

sorry to OP who's thread kinda got hijacked.

 

 

Np, I have a 3.8L stick, and two sets of five for my tires. The rinky dinky road tires sitting at just under stock size with 16 inch, and my 33's that I use for off road fun. I'm telling you if you are going for looks you will lose the gas mileage, no way around it. If it's just the power loss you are looking to get back re gearing is a decent option. As for gas mileage, the smaller the better, that s why I run around town with the embarrising tiny tires.


Just my opinion, it's a waste of $ and good rubber to buy off road tires if you only use them on the streets. I'd consider getting street tread if you are going to stick with such a large size tire, since I doubt you will need the xtra groves for street travel. Not to mention if you are rolling around the streets with knobbies you will be getting less rubber touching the street, and that can cause you to loose traction at high speeds. Oh and one last bit, I can not stand it when I see a jeep with 35's or bigger running around town with almost no tread on just one tire while the 5th is brand new, ROTATE ROTATE ROTATE, with every oil change. Dont be money bags la douche. Be a Jeeper. Love thy Jeep, not just the idea of having one.

 

Newbie to the forum. Love to be to get advice from others on a like-hobby!

 

The one to the far left are my rinky dinky road tires, Cooper discovery's the middle are the stock Goodyear wrangler st. Tires and the far right are my BFgoodrich MUD terrain tires.

 

The Goodyear are 17\" while the coppers are 16" more tread on the Goodyear street is where that xtra inch comes from. The T/A BFgoodrich are 33's but I keep them at 37-40 psi

 

I went with the coppers b/c of gas miliage. I chose wider tread pattern due to me living in Houston, we don't have to worry about snow, just lots of water. Helps with restiance when you hit a big puddle in the road, less pull on the steering.


Whatever happened to the Jeep wave?

 

So yea, tires are an important part of any vehicle. If it's just looks you are going for I'd recommend 33's with a decent road tread for optimal gas usage. figure out where your pavement princess shifts for inclines and try to get her to shift using the gas pedal. I could be wrong, I'm no professional. Just my experience with what I have dealt with.

 

 

35's is as big as i would go with stock anything, and really that's kind of pushing it. Like I said 33's is the sweet spot if you run with stock axles, gears or suspension. If you run 37's with stock components you will be replacing things one after another. 35's will be placing a lot of pressure/stress/weight, on your suspensions components and axles, but no so much that you find yourself replacing parts as much as if you went with 37's. And honestly if your not running serious off road trails, or rock crawling you don't need tires that big anyway.
33's with the proper type of tread should be sufficient for a DD that sees some off road situations. Now if you have the $/are willing to get a aftermarket suspension-axle then by all means go BIG. In that serinaro, kiss your mpg goodbye lol