What is the largest tire I can use?
Without any modifications, 15″ x 8.5″ wheels (front and back) with 4.5″ backspacing and P245/60R15 tires will fit. For 16″ x 10″ (front) and 16″ x 10.5″ (rear) with 5.375″ backspacing and P255/50R16 tires, the inner lip of the fenders will have to folded under. Also the control arm (near the upper ball joint) may have to be grinded up front and shock mount clearance should be checked in the rear. For 17″ x 11″ (front) and 17″ x 12″ (rear) with 6″ backspacing and P275/40R17 (front) / P315/35R17 (rear), the same changes as above are required plus notching of the lower control arm up front may be required.