Record the exact combination
Wheel diameter/width, offset/backspacing, tire size, ride height, brake package and suspension/rear-axle changes all matter.
MODIFIED CAR · WHEELS / TIRES
Modified F-Body Wheel / Tire Rub Diagnosis
A wheel can bolt on and still rub under steering lock, suspension compression, body roll or axle movement. Static driveway clearance is not the whole test.
APPLICATION: 1993–2002 Firebird / Formula / Trans Am with non-stock wheel, tire, ride height, brakes or suspension.
MODIFIED-CAR / AFTERMARKET EVIDENCE · VERIFY INSTALLED HARDWARE
Find the contact witness
Inspect tire sidewalls/tread, inner fenders, control areas, brake hoses, sway-bar areas and rear wheelhouses for fresh contact marks.
Check dynamic conditions
Reproduce steering lock and suspension travel safely. On lowered solid-axle cars, verify rear axle centering with the installed panhard arrangement.
DO NOT SOLVE RUB WITH RANDOM SPACERS
A spacer changes wheel position and can create new stud, bearing, fender or caliper-clearance problems. Measure the required correction and verify the whole combination.
FPV RULE
OBSERVE → MEASURE → ISOLATE → PROVE → REPAIR → VERIFY. A symptom is a starting point, not a parts verdict.