Congrats on the Tesla purchase, also contributing to an IRA. The amount that you can convert from a traditional to a Roth IRA to have $7500 worth of tax liability will depend on your other income, tax bracket, and filing status.
Turbotax offers a Tax Caster program that you can estimate your income and change the numbers to see how a conversion will affect your taxes. The tax caster is currently set up for 2022, tax laws and tax rates may change from year to year.
https://turbotax.intuit.com/tax-tools/calculators/taxcaster/
