My wife's Saturn Ion-3 came with 16" rims and low profile (55 series) Firestone Firehawk tires. They are pretty good tires, but we don't have much mileage on the Saturn (under 13K miles), but wear appears to be normal so far.
Wet weather traction is not as good as I expected, but much much better than the Goodyear RT/S tires that came on the Sport Trac.
I have always had good experiences with Firestone tires except for the Firestone Wilderness AT that came on my old 2001 Job-1 Sport Trac. They were down right squirely and had a mind of their own. I replaced them with Goodyear Wrangler RF/A's within 2 weeks. They were Rotation-Free AquaTread tires that ran great and had terriffic wet weather traction. Ford later reimbursed me for the cost of the Goodyears when they recalled all the Firestone's
...Rich