down side to gears?

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Aug 17, 2010 | 06:24 PM

#21

JK Enthusiast

Joined: Apr 2010

Posts: 329

Likes: 0

From: Miami,Fl

what rpm are you at 75-80 with your 513s thanks

Aug 17, 2010 | 07:33 PM

#22

nthinuf

JK Jedi Master

Joined: Jan 2008

Posts: 11,463

Likes: 165

From: Austin <--> Colorado Springs

Quote:

Originally Posted by HV

what rpm are you at 75-80 with your 513s thanks

Measure your tires and plug it into the charts in the drivetrain faq's. (built for 70 mph, but great for a reference...)

Aug 18, 2010 | 04:15 AM

#23

Biff Malibu

JK Enthusiast

Joined: Dec 2006

Posts: 145

Likes: 1

From: Saline Michigan

Quote:

Originally Posted by HV

so you would of gone with 538s from the get go

Yes I would have. As soon as the funds are available, I'll be making the switch.

Aug 18, 2010 | 07:25 AM

#24

wvwannabe

JK Newbie

Joined: Apr 2010

Posts: 26

Likes: 0

From: Atlanta,GA

best ring and pinion ratio

Randy's Ring and Pinion website has an easy to use calculator that you plug in tire size, trans gear and ring and pinion ratio to determine engine rpm. Have fun.

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