I run 215/60 x 16 summer tires and 225/60 x 16 winter tires. There is no problem with rubbing. I think the Taurus will take a 235 width tire without rubbing.
When my summer tires wear out I will replace them with the 225/60 x 16 size. I prefer them and the difference in speedometer and other computer aspects is insignificant in my opinion since the difference between new and worn tires exceeds the difference one width size increase makes.
Hope this helps.
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Art
2000 Taurus SEL Wagon 3.0 Vulcan (daily driver)
1993 Taurus GL Wagon 3.8 Essex
1991 Mercury Grand Marquis LS 5.0
1986 Chevrolet 3/4 ton pickup 4x4 350 with turbo400 and 208 transfer case
1978 Chevrolet 3/4 ton pickup 4x4 custom 6.2 na diesel with turbo400 and 203 transfer case
Planning 2008 Taurus X in a year
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Tire size 
Linear Mode
