MPG conversion - JeepForum.com

 
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post #1 of 3 Old 08-14-2010, 12:20 PM Thread Starter
Matthew00
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1987 YJ Wrangler 
 
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MPG conversion

Can anyone tell me what the factory wheel/tire size for the '87 YJ was? I am trying to figure out my MPG more accurately since I have 33s on the YJ now. I need to do a little math if anyone can help me out with an answer.

Thanks!

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post #2 of 3 Old 08-17-2010, 01:37 PM
UncleWilson
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2006 LJ Wrangler 
 
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tirerack.com ---> Jeep--->1987--->Wrangler

Original Equipment Size 1: 205/75-15

Original Equipment Size 2: 215/75-15

Original Equipment Size 3: 225/75-15

2006 LJ Rubi JKS BL/MML, Curries Arms, 3", UCF Skids, Riddler, 35 GY MTR W/K, Black Rock 909's, Black Magic, Rokmen Sliders, Savvy GTS, Cloaked, 4.88

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post #3 of 3 Old 08-17-2010, 04:52 PM
Demp
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2013 JK Wrangler 
 
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205/75-15 is 27.1
225/75-15 is 28.3

8 inch wide tires. I cant remember which one came on which packages, chances are smaller to 4 cylinder. with the larger on the 6, and biggest on the renegade or sahara or sport package.

Just to toss it out there, you can check on your axle gearing and get the speedometer adjusted as well.
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