tire to quarter clearance

the gear ratio and motor build is the reason im wanting the most tire I can get so it will run through the quarter on motor without turning the motor out of its mind if it wasn't for that I would go with the 255 drag radial and have a ton of room but according to how it does the 255 would put the engine in the twilight zone in the quarter its got a 4 30 gear right now and motor topped out at 6800 on dyno