<SUBMISSION>
<ACCESSION-NUMBER>0001179350-05-000028
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20050408
<FILING-DATE>20050411
<DATE-OF-FILING-DATE-CHANGE>20050411
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>STEINKE RICHARD A
<CIK>0001096335
<STATE-OF-INCORPORATION>NV
<FISCAL-YEAR-END>0630
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>000-50053
<FILM-NUMBER>05743297
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>7022943870
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>AMERITYRE CORPORATION
<STREET2>1501 INDUSTRIAL ROAD
<CITY>BOULDER CITY
<STATE>NV
<ZIP>89005
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>AMERITYRE CORP
<CIK>0000945828
<ASSIGNED-SIC>3011
<IRS-NUMBER>870535207
<STATE-OF-INCORPORATION>NV
<FISCAL-YEAR-END>0630
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>1501 INDUSTRIAL ROAD
<CITY>BOULDER CITY
<STATE>NV
<ZIP>89005
<PHONE>7022931930
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1501 INDUSTRIAL ROAD
<CITY>BOULDER CITY
<STATE>NV
<ZIP>89005
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>AMERICAN TIRE CORP
<DATE-CHANGED>19951117
</FORMER-COMPANY>
</ISSUER>
<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>2005-04-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000945828</issuerCik>
        <issuerName>AMERITYRE CORP</issuerName>
        <issuerTradingSymbol>AMTY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001096335</rptOwnerCik>
            <rptOwnerName>STEINKE RICHARD A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>AMERITYRE CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>1501 INDUSTRIAL ROAD</rptOwnerStreet2>
            <rptOwnerCity>BOULDER CITY</rptOwnerCity>
            <rptOwnerState>NV</rptOwnerState>
            <rptOwnerZipCode>89005</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-04-08</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>18333</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>146667</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-04-08</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>G</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6667</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>140000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1255000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>see footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">shares sold in a private, non-market transaction</footnote>
        <footnote id="F2">shares disposed of in bona fide gifting transactions</footnote>
        <footnote id="F3">represents 455,000 shares held by Gemini Funding Services Profit Sharing Account of which the reporting person is the principal, and 800,000 shares held by S102 Irrevocable Trust of which the reporting person is the trustee</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/Richard A. Steinke</signatureName>
        <signatureDate>2005-04-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
