-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 PN1DWoN7GWmRJsKjV52vAPUvc1s7+979zDY7lWZHvV4XPN62w5lmUwtrOvNIn8bo
 YuhgqHl9SFBBpKEupov+lQ==

<SEC-DOCUMENT>0001027796-06-000024.txt : 20061115
<SEC-HEADER>0001027796-06-000024.hdr.sgml : 20061115
<ACCEPTANCE-DATETIME>20061115183000
ACCESSION NUMBER:		0001027796-06-000024
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20061113
FILED AS OF DATE:		20061115
DATE AS OF CHANGE:		20061115

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LEAR CORP
		CENTRAL INDEX KEY:			0000842162
		STANDARD INDUSTRIAL CLASSIFICATION:	PUBLIC BUILDING AND RELATED FURNITURE [2531]
		IRS NUMBER:				133386776
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		21557 TELEGRAPH ROAD
		CITY:			SOUTHFIELD
		STATE:			MI
		ZIP:			48034
		BUSINESS PHONE:		2484471500

	MAIL ADDRESS:	
		STREET 1:		21557 TELEGRAPH ROAD
		CITY:			SOUTHFIELD
		STATE:			MI
		ZIP:			48034

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LEAR CORP /DE/
		DATE OF NAME CHANGE:	19960620

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LEAR SEATING CORP
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LEAR SIEGLER SEATING CORP
		DATE OF NAME CHANGE:	19900723

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PZENA INVESTMENT MANAGEMENT LLC
		CENTRAL INDEX KEY:			0001027796

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11311
		FILM NUMBER:		061221149

	BUSINESS ADDRESS:	
		STREET 1:		120 WEST 45TH STREET, 34TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		2125831291

	MAIL ADDRESS:	
		STREET 1:		120 WEST 45TH STREET, 34TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-11-13</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000842162</issuerCik>
        <issuerName>LEAR CORP</issuerName>
        <issuerTradingSymbol>lea</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001027796</rptOwnerCik>
            <rptOwnerName>PZENA INVESTMENT MANAGEMENT LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>120 WEST 45TH STREET, 20TH FL</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10036</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-11-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4225</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>139323.97</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7872854</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Beneficial ownership held through client accounts.</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-11-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>640750</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>21482148.46</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7872854</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Benefical ownership held through client accoutns.</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Sale resulting from client-directed liquidation.</footnote>
        <footnote id="F2">Pzena Investment Management (&quot;PIM&quot;), an investment adviser registered under the Investment Adviser's Act of 1940, has dispositive power over the shares of the common stock reported herein pursuant to investment advisory contract with its clients.  PIM disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.</footnote>
        <footnote id="F3">Pzena Investment Management (&quot;PIM&quot;), an investment adviser registered under the Investment Adviser's Act of 1940, has dispositve power over the shares of the common stock reported herin pursuant to investment advisery contract with its clients. PIM disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.  PIM no longer considers itself ineligible to rely on the exemption provided by Rule 16a-1 (a) (1) for such securities and thus will no longer be making filings under Section 16 of the Act.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Richard S. Pzena</signatureName>
        <signatureDate>2006-11-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----