MPG conversion - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Tires & Wheels > MPG conversion

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineRough Country Jeep Suspension Deals at Rockridge 4WD!Engo winches available at www.rockridge4wd.com! Free shipp

Reply
Unread 08-14-2010, 12:20 PM   #1
Matthew00
Registered User
1987 YJ Wrangler 
 
Join Date: May 2009
Location: Fort Collins, CO
Posts: 3
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!

Matthew00 is offline   Reply With Quote
Unread 08-17-2010, 01:37 PM   #2
UncleWilson
Member
 
UncleWilson's Avatar
2006 LJ Wrangler 
 
Join Date: Jul 2010
Location: SE Michigan
Posts: 307
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 4", UCF Skids, Riddler, 35 GY MTR W/K, Black Rock 909's, Black Magic, Rokmen Sliders, Savvy GTS, Savvy Lights, Metalcloaked, 4.88

www.stu-offroad.com
TJ Alignment Videos
Currie Control Arms Install Tips
Off Road Tips Techniques

o[__Q_]o
(OIIIIIO)
[]==O==[]
UncleWilson is offline   Reply With Quote
Unread 08-17-2010, 04:52 PM   #3
Demp
Registered User
2013 JK Wrangler 
 
Join Date: Apr 2010
Posts: 1,223
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.
Demp is offline   Reply With Quote
Reply

Tags
gas mileage , tire size
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.