So, I posted a while back asking about 2.5 lift with 35's. I'm still wondering if this is a good set up for my 2013 Sahara. However, I keep reading different views on having gears changed out.

Does anyone know what gear ratio the 2013 Sahara has and if I need to change out gears w/2.5 inch lift ( or possibly 3inch) with 35's?

If gear changes need to be made w/35's can I get away with just 33's and a 2.5 inch lift?

I just don't want to either under purchase and cause any damage to the vehicle or get taken for a ride at the shop when I decide to pull the trigger on this.

Thanks in advance!

 

If you get your OEM build sheet it will tell you on that. Most were built with 3.21's sadly though.

 

so do you think I'd need to change my gear ratio if I wanted to put 35's and a 3 inch lift?

 

Subjective. 35" will slow you down at launch. 35" will give lower rpm's at a given speed compared to 32"~33". (About 300 rpm) Lower rpm may take you out of the power band making your engine lug. You live in LA so quick freeway on ramps is a must. Going up the GrapeVine will mean dropping a gear or two. If you don't wheel, stay with 33". Also, tire size, not lift height, affects gearing.

 

I was going to stay at 33's but I recently moved up to big bear where there's loads of trails. That's the main reason why I'm contemplating pushing to 35's.

Thanks for your input!

 

I'm waiting for my D30 Ring and pinion to blow then I'm going to go 456's on a core 44 front.

I would go 410's or 456's personally I would not go lower on the weak D30 Ring and pinion.

 

Write down your vin number and go in Jeeps website. Submit your vin, and they will give you sour build sheet. That will tell you the gears. If you go 33s then look at a leveling kit. If you go 35s you need a 2.5 in. Lift.

Also, Google Jeep JK RPM chart and take a look at the engine RPMs for each gear and tire size to give you an idea of where your RPMs will be. Keep in mine that tires generally run a touch smaller than advertised, and the weight of the vehicle causes them to squat a bit. However, this does not mean that a 2.5in lift will clear a tire advertised larger than 35. For determining the lift you need, go by advertised tire size.

Sent from my iPhone using JK-Forum

 

Could be waiting for a while. I've been wheeling my eaton locked 4.88 Dana 30 (without being overly harsh) on 35's and it's been fine. the actual number of reported failures isn't as bad as the chatter on the forums makes it out to be.

 

I thought Sahara's got 3.73's from the factory ??

 

3.73 optional. 3.21 standard for sport and Sahara. Rubicon is 3.73 standard nowadays. 4.10 optional