Tire size change with 4.56 - F150online Forums

Go Back  F150online Forums > Powertrain & Mechanical > Other Powertrain
Tire size change with 4.56 >

Tire size change with 4.56

Tire size change with 4.56

  #1  
Old 10-04-2018, 11:52 AM
dewalt17's Avatar
Senior Member
Thread Starter
Join Date: Oct 2003
Location: Sparta, IL
Posts: 1,017
Tire size change with 4.56

A friend of mine recently bought my old '05 4x4 Flareside. It has a 4.6L, 33x12.5x17's, and 4.56 gears. We were discussing possibly trading wheels/tires. My '12 has 32's, on 18's. Would the RPM increase be too much, going to 32's, on the old truck? Also on a side note, would I need to do a 2" level to fit my old wheels/tires?

Old truck


New Truck
 
  #2  
Old 10-04-2018, 02:04 PM
glc's Avatar
glc
glc is offline
Senior Member
Join Date: Dec 2006
Location: Joplin MO
Posts: 37,684
At 70 mph in locked up overdrive, the RPM will increase from 2275 to 2350. Not significant, that's only about 3%.
 
  #3  
Old 10-04-2018, 03:27 PM
dewalt17's Avatar
Senior Member
Thread Starter
Join Date: Oct 2003
Location: Sparta, IL
Posts: 1,017
Yea, that isn't too bad then. I guess the only other thing will be tire fitment on my '12 and waiting to get speedometer corrected.
 
  #4  
Old 10-04-2018, 03:50 PM
glc's Avatar
glc
glc is offline
Senior Member
Join Date: Dec 2006
Location: Joplin MO
Posts: 37,684
That's only going to knock the speedo off by about 2 mph at highway speeds.
 
  #5  
Old 10-04-2018, 04:55 PM
dewalt17's Avatar
Senior Member
Thread Starter
Join Date: Oct 2003
Location: Sparta, IL
Posts: 1,017
I guess I could live with that, short term, Only real concern then would be any rubbing issues, with my '12 being bone stock. Thanks!
 


Thread Tools
Search this Thread
Quick Reply: Tire size change with 4.56


Sponsors

Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: