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What size are the factory lug nut's on a R/T with 20's

46K views 12 replies 11 participants last post by  HEMIPILOT 
#1 ·
Are they metric or standard . I have been using 22 mm . But they are denting the nut cover . Too loose on the nut.
 
#2 · (Edited)
Lug nut info detailed thread



Blackknight:
Here is a link to a very detailed thread about RT and SRT8 lug nuts with
specifications and part numbers and all quesions related:

http://www.challengerforumz.com/showthread.php?t=31575&highlight=NUTS

Yes, you are using the wrong size socket (21MM needed)

:3-smoke:

BigSnake or DieselDave Moderators, can you make that threat a Sticky in
the Wheels 'n Tires section?? I'm sure its gonna come up many more times
again in the future.
 
#3 ·
Done, and you need a long socket 21mm. Get yourself a torque wrench that goes past 110 ftlbs and torque your lugnuts to 110 ftlbs cold.
Lugnuts thread is 14mm x 1.5
Lug pattern is 5x115
Lugnuts are Acorn bulge 13/16 hex
Mopar part # 6507826AA :D
 
#4 ·
Also let me add that "Snap On" makes a good nylon lined 21MM long socket that will protect the finish on your lugnuts.

Here's the part number : Bluepoint TSMPT21
 
#8 ·
lug nut torque

Are you guys sure of the torque spec at 110 lbs? That sounds way too high to me, especially for aluminum/chrome clad wheels. The industry standard for 14 by 1.5 is 85 to 90. Steel wheels normally torque at 100-110 but aluminum wheels can crack at that spec. What is the source for this 110 lb torque?
 
#9 ·
Lug Nut Torque Spec

Are you guys sure of the torque spec at 110 lbs? That sounds way too high to me, especially for aluminum/chrome clad wheels. The industry standard for 14 by 1.5 is 85 to 90. Steel wheels normally torque at 100-110 but aluminum wheels can crack at that spec. What is the source for this 110 lb torque?
mrwfp;

Note the following quote from the 2009 R/T Owners Manual pg. 351.


10. Finish tightening the lug nuts. Push down on the wrench while tightening for increased leverage. Alternate lug nuts until each nut has been tightened twice. The correct tightness of each lug nut is 100 ft/lb. (135 N·m). If in doubt about the correct tightness, have them checked with a torque wrench by your authorized dealer or at a service station.

The 110 ft/lb torque probably would suffice for the SRT wheel lug torque
specification, as it is only 10 ft/lb more.

You would be surprised what you would find in your owners manual, so
download a FREE .PDF format copy to your Documents folder on your
PC and place a shortcut to it so you can quickly access it and search/find
items.

http://www.dodge.com/en/owners/manuals/

Lug nut design spec data at:

http://www.sequentialtaillights.com/dodge/50 Challenger Tips and Tricks.html#ChallTip76

:3-smoke:
 
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