What's the BIGGEST tire I can get on my 6 inch lifted FJ cruiser with my 18 inch rim?
Your limited on clearances and the width of the wheels, as you didn't state how wide the wheels were and how close they come to steering components it is hard to say, I have seem some FJ's in my area packing 42 X 12.50's if that helps. HTH
That is a good question to put to an off road shop. Trial fitting is the only way to know for sure but a tape measure will help you get close.
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