wheel lug torque specs
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Intermediate
Joined: Jun 2012
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wheel lug torque specs
Got a 2001 with chrome rims. On page 3-92 of the service manual it states to tighten the lug nut in sequence ( which is not a star pattern ) and tighten to 100 lb ft. On page 3-98 it states to tighten the lug nuts in a criss/cross pattern to 140 lb ft. Well we all know to criss/cross. So what is up with the two different torques.
Melting Slicks
Joined: Jul 2013
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From: Anaheim CA
Look again, it's the same torque spec: 100 ft-lbs (English) = 140 N-m (metric).
(And "in sequence" refers to the diagrams, the 5-bolt one is a star pattern.)
(And "in sequence" refers to the diagrams, the 5-bolt one is a star pattern.)
Last edited by Lee DeRaud; Jul 6, 2014 at 04:35 PM.
Team Owner
Joined: Jul 2006
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From: Kannapolis NC
Congrats on reading the manual, many don't try that first. Just some info, if you have chrome wheels, they are aftermarket or have been chromed since made. C5's came with polished aluminum wheels with clear coat over them. Except for 01-03 Z06 which were painted.
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Intermediate
Joined: Jun 2012
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OK. my bad on the chrome wheels they are the stock aluminum with clear coat. thanks for the clarification on page 3-92. if any body has a manual im not kidding, page 3-98 says tighten to 190 N-m ( 140 lb ft )
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Racer
Joined: May 2013
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From: Hugo MN
Not sure what manual you're looking at. I've got the 2001 Corvette Owner's Manual and the lug specs are on page 6-75 and spec 100 lb-ft (140 N-m). The pages you reference are NOT in the manual and section 3 only goes through 3-32!
Racer
Joined: May 2013
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From: Hugo MN
Sorry, I didn't notice that you are referencing the SERVICE MANUAL until after I sent the above response. Owner's Manual specs are what I have used!
Melting Slicks
Joined: Jul 2013
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From: Anaheim CA
Possible typo...what year is it? (I was quoting from a 2004 service manual: its page numbers are one off from what you gave.)
Le Mans Master
Joined: Mar 2011
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From: Columbia SC
I have found some other errors in the FSM but they have been in the schematics.
Le Mans Master
Joined: Apr 2012
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From: Brighton MI
Errors happen in Service Manuals. Dealers are sent bulletins to correct these errors that are discovered after printing. Those of us (private individauls) who have manuals do not get these bulletins.
Correct spec is 100 ft/lbs in the standard 5 point star (criss cross) pattern.
I NEVER use an impact to install lug nuts. I would also advise torquing in two steps, first to 50 ft/lbs then to the full 100 ft/lbs. Probably overkill, but I have never warped a rotor!
Correct spec is 100 ft/lbs in the standard 5 point star (criss cross) pattern.
I NEVER use an impact to install lug nuts. I would also advise torquing in two steps, first to 50 ft/lbs then to the full 100 ft/lbs. Probably overkill, but I have never warped a rotor!
Le Mans Master
Joined: Mar 2011
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From: Columbia SC
Not overkill, but the proper way to torque joints. I use 3 passes when doing lug nuts. I use more passes when critical gasket joints are involved. This is standard practice in industrial applications. Procedurally mandatory in the Nuclear industry.
Team Owner
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From: Huntsville AL
Errors happen in Service Manuals. Dealers are sent bulletins to correct these errors that are discovered after printing. Those of us (private individauls) who have manuals do not get these bulletins.
Correct spec is 100 ft/lbs in the standard 5 point star (criss cross) pattern.
I NEVER use an impact to install lug nuts. I would also advise torquing in two steps, first to 50 ft/lbs then to the full 100 ft/lbs. Probably overkill, but I have never warped a rotor!
Correct spec is 100 ft/lbs in the standard 5 point star (criss cross) pattern.
I NEVER use an impact to install lug nuts. I would also advise torquing in two steps, first to 50 ft/lbs then to the full 100 ft/lbs. Probably overkill, but I have never warped a rotor!
I do 50, then 75, then 100, then 100 again.
Team Owner
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